Sustainability

24415 KiB

Open AccessArticle

GIS-Based Approach for Municipal Renewable Energy Planning to Support Post-Earthquake Revitalization: A Japanese Case Study

by Qianna Wang, Martin Mwirigi M’Ikiugu, Isami Kinoshita and Yanyun Luo

Sustainability 2016, 8(7), 703; https://doi.org/10.3390/su8070703 - 22 Jul 2016

Cited by 7 | Viewed by 5849

Abstract

Following a regional-level study conducted in Fukushima Prefecture, Japan (Wang et al., 2014 [1]), this paper presents an approach for municipal renewable energy planning and its experimental application in a Japanese municipality using a Geographic Information System (GIS). The proposed approach [...] Read more.

Following a regional-level study conducted in Fukushima Prefecture, Japan (Wang et al., 2014 [1]), this paper presents an approach for municipal renewable energy planning and its experimental application in a Japanese municipality using a Geographic Information System (GIS). The proposed approach is comprised of local issue identification, renewable energy potential evaluation and visualization, site comparison and scenario analysis. GIS was used to analyze and visualize solar, wind and biomass (forest and agriculture residue) potential within Kawamata Town, Fukushima, Japan. According to local conditions, all potential sites were coded and then compared based on different criteria, such as solar radiation, wind speed, slope and land uses, among others. In the scenario analysis section, two scenarios, “renewable energy prioritized” and ”evacuation area prioritized”, were adopted and compared. The scenarios are altered in terms of placement and the number of renewable energy facilities inside and outside evacuation areas within the town. The results generated through the proposed approach can provide information on local potentials of renewable energy resources, as well as renewable energy development alternatives at the municipal level. They can be used in the interactive dialogue for the municipal renewable energy planning process, to help to fulfill the municipality’s post-earthquake energy developmental vision. Full article

(This article belongs to the Section Energy Sustainability)

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1367 KiB

Open AccessArticle

Applying Limestone or Basalt in Combination with Bio-Fertilizer to Sustain Rice Production on an Acid Sulfate Soil in Malaysia

by Qurban Ali Panhwar, Umme Aminun Naher, Jusop Shamshuddin, Radziah Othman and Mohd Razi Ismail

Sustainability 2016, 8(7), 700; https://doi.org/10.3390/su8070700 - 22 Jul 2016

Cited by 15 | Viewed by 6619

Abstract

A study was conducted to determine the efficacy of applying ground magnesium limestone (GML) or ground basalt in combination with bio-fertilizer to sustain rice production on an acid sulfate soil in Malaysia. Soils from Kelantan Plains, Malaysia, were treated with GML, ground basalt, [...] Read more.

A study was conducted to determine the efficacy of applying ground magnesium limestone (GML) or ground basalt in combination with bio-fertilizer to sustain rice production on an acid sulfate soil in Malaysia. Soils from Kelantan Plains, Malaysia, were treated with GML, ground basalt, bio-fertilizer, GML + bio-fertilizer, and ground basalt + bio-fertilizer (4 t·ha⁻¹ each). Results showed that soil fertility was improved by applying the soil amendments. GML and basalt contain some Zn and Cu; thus, application of these amendments would increase their contents in the soil needed for the healthy growth of rice. Basalt applied in combination with bio-fertilizer appeared to be the best agronomic option to improve the fertility of acid sulfate soils for sustainable rice production in the long run. In addition to increasing Ca, Mg, Zn, and Cu reserves in the soil, water pH increased and precipitated Al³⁺ and/or Fe²⁺. Ground basalt is cheaper than GML, but basalt dissolution in the acidic soil was slow. As such, its ameliorative effects could only be seen significantly from the second season onwards. The specially-formulated bio-fertilizer for alleviating the infertility of acid sulfate soil could also enhance rice growth. The use of the bio-fertilizer fortified with N₂-fixing bacteria is a green technology that would help reduce NO₃⁻ and/or NO₂⁻ pollution and reduce the cost of rice production. The phosphate-solubilizing bacteria (PSB) present in the bio-fertilizer not only increased the available P, but also helped release organic acids that would inactivate Al³⁺ and/or Fe²⁺ via the process of chelation. Full article

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Graphical abstract

Graphical abstract
Full article ">Figure 1
The predicted shoreline in the Kelantan Plains, Malaysia, about 4300 years before present (BP), modified from Enio et al. [<a href="#B1-sustainability-08-00700" class="html-bibr">1</a>]. Full article ">Figure 2
Monthly rainfall (a) and monthly temperature (b) at the experimental site [<a href="#B25-sustainability-08-00700" class="html-bibr">25</a>]. Full article ">Figure 3
Effects of applying GML and basalt with, or without, bio-fertilizer on rice growth: (a) grain yield and (b) straw yield. GML = ground magnesium limestone. Means within the same column followed by the same letters are not significantly different at p < 0.05 (n = 18). Full article ">Figure 4
Effects of treatments on the form of Al in soil. GML = ground magnesium limestone. Means within the same column followed by the same letters are not significantly different at p < 0.05 (n = 18). Full article ">Figure 5
Relationship between soil pH and exchangeable Ca (a); soil pH and exchangeable Mg (b); soil pH and exchangeable Al (c); and soil pH and extractable Fe (d). Full article ">Figure 6
The mechanism of Al and Fe chelation shown by an organic material in soil. Full article ">

2044 KiB

Open AccessArticle

Comparing Conceptualizations of Urban Climate Resilience in Theory and Practice

by Sara Meerow and Melissa Stults

Sustainability 2016, 8(7), 701; https://doi.org/10.3390/su8070701 - 21 Jul 2016

Cited by 103 | Viewed by 26030

Abstract

In the face of climate change, scholars and policymakers are increasingly concerned with fostering “urban resilience”. This paper seeks to contribute towards a better understanding of synergies and differences in how academics and local decision-makers think about resilience in the context of climate [...] Read more.

In the face of climate change, scholars and policymakers are increasingly concerned with fostering “urban resilience”. This paper seeks to contribute towards a better understanding of synergies and differences in how academics and local decision-makers think about resilience in the context of climate change. We compare definitions and characteristics of urban climate resilience in the academic literature with a survey of 134 local government representatives from across the U.S. Our analysis shows discrepancies in how academics and practitioners define and characterize urban climate resilience, most notably in their focus on either “bouncing back” or “bouncing forward” after a disturbance. Practitioners have diverse understandings of the concept, but tend to favor potentially problematic “bouncing back” or engineering-based definitions of resilience. While local government respondents confirm the importance of all 16 resilience characteristics we identified in the academic literature, coding practitioners’ free response definitions reveals that they rarely mention qualities commonly associated with resilience in the scholarly literature such as diversity, flexibility, and redundancy. These inconsistencies need to be resolved to ensure both the usability of climate resilience research and the effectiveness of resilience policy. Full article

(This article belongs to the Special Issue Urban Resilience and Urban Sustainability: From Research to Practice)

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228 KiB

Open AccessArticle

The Sustainable Strategy for Small and Medium Sized Enterprises: The Relationship between Mission Statements and Performance

by Ethem Duygulu, Emir Ozeren, Pınar Işıldar and Andrea Appolloni

Sustainability 2016, 8(7), 698; https://doi.org/10.3390/su8070698 - 21 Jul 2016

Cited by 50 | Viewed by 10849

Abstract

The study aims to contribute to the literature by empirically examining the relationship between small and medium sized enterprises’ (SMEs) mission statements and their performance in sustainable strategy formulation. Although it seems that there is a relatively vast amount of research with regard [...] Read more.

The study aims to contribute to the literature by empirically examining the relationship between small and medium sized enterprises’ (SMEs) mission statements and their performance in sustainable strategy formulation. Although it seems that there is a relatively vast amount of research with regard to mission statements of companies, very few studies have focused on the relationship between mission statements and performance. When these few studies are taken into consideration, it is difficult to reach any overall conclusion since their findings are mixed and inconclusive. To achieve this aim, 3034 SMEs operating in organized industrial zones in Turkey were examined via a survey approach. In order to investigate the relationships among the variables, nine categories of mission statements as independent variables and four performance indicators (financial, market, production, and overall) as dependent variables were analyzed through logistic regression. This study identified three mission components, (1) survival, growth, and profit; (2) philosophy and values; and (3) public image, as the common independent variables in explaining the performance of SMEs. Survival, growth, and profit is the most frequently observed mission component regardless of the subsector differentiation in the entire sample, which reflects the significance of business sustainability for SMEs in the Turkish manufacturing context. Besides, among all performance indicators, SMEs’ market performance was found to be the lowest when compared to other performance indicators (financial, production, overall). Although the firms were placed in different manufacturing subsectors, similar mission statements were highlighted so that the discourse similarity might be considered as evidence of isomorphism characteristics for SMEs. Full article

(This article belongs to the Section Economic and Business Aspects of Sustainability)

507 KiB

Open AccessArticle

The Adoption of Environmental Practices in Small Hotels. Voluntary or Mandatory? An Empirical Approach

by Llorenç Bagur-Femenias, Dolors Celma and Josep Patau

Sustainability 2016, 8(7), 695; https://doi.org/10.3390/su8070695 - 21 Jul 2016

Cited by 35 | Viewed by 7799

Abstract

This paper examines small hotels that have some type of environmental certification. A survey of 210 small (less than 50 employees) Catalonian hotels was conducted to investigate whether there are significant differences in the results of the implementation practices between hotels that adopt [...] Read more.

This paper examines small hotels that have some type of environmental certification. A survey of 210 small (less than 50 employees) Catalonian hotels was conducted to investigate whether there are significant differences in the results of the implementation practices between hotels that adopt these certifications due to environmental pressure (from the government, customers, suppliers and other stakeholders) and hotels that voluntarily commit to green policies. Significant differences were identified in the results on the hotels when structural equation modelling (SEM) was undertaken. This investigation suggests that hotels that voluntarily commit to green policies obtain better results than other hotels. The conclusion is that governments must not only regulate, but also promote awareness actions in small and medium-sized (SME) tourism companies to improve the environment. SME tourism companies must understand that both the environment and they themselves will benefit. Full article

(This article belongs to the Special Issue Sustainable Management in Tourism and Hospitality)

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1029 KiB

Open AccessArticle

Economic Impacts of Power Shortage

by Peng Ou, Ruting Huang and Xin Yao

Sustainability 2016, 8(7), 687; https://doi.org/10.3390/su8070687 - 21 Jul 2016

Cited by 22 | Viewed by 10331

Abstract

The electricity industry is a basic industry of the national economy. It has experienced several large-scale power shortages, hard power shortage and soft power shortage, which have brought a great threat to China’s sustainable economic development. To solve this problem better, it is [...] Read more.

The electricity industry is a basic industry of the national economy. It has experienced several large-scale power shortages, hard power shortage and soft power shortage, which have brought a great threat to China’s sustainable economic development. To solve this problem better, it is necessary to make a quantitative assessment of the economic impacts of power shortage. The CGE model is commonly used for simulating economic shocks and policy effects. It describes supply, demand and equilibrium in different markets by simulating the economic mechanism through a set of equations. Once changed, the exogenous variables will affect a certain part of the system and then the whole system, leading to changes in quantities and prices. The equilibrium state will also change from one to another. A static CGE model is built in this paper, and the Social Accounting Matrix (SAM) of eight sectors of China in 2007 is compiled, in order to simulate the economic impacts of hard power shortage and soft power shortage. Simulation results show that the negative effects of power shortage on economic development are very significant, and the effects vary in different sectors. Especially, under the background of hard power shortage, the industrial sector suffers most. The economic cost of power shortage is considerable, and the main reason for it is the specific administrative pricing system in China. The low electricity price in the long term will lead to insufficient construction and hard power shortage; moreover, that in the short run would result in soft power shortage. In order to solve the problem of power shortage completely, power system reform is inevitable. Full article

(This article belongs to the Special Issue Selected Papers from 6th Annual Conference of Energy Economics and Management)

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1334 KiB

Open AccessArticle

Analysis of CO₂ Emission Performance and Abatement Potential for Municipal Industrial Sectors in Jiangsu, China

by Jie Zhang, Zhencheng Xing and Jigan Wang

Sustainability 2016, 8(7), 697; https://doi.org/10.3390/su8070697 - 20 Jul 2016

Cited by 12 | Viewed by 4476

Abstract

As the main source of CO₂ emissions in China, the industrial sector has faced pressure for reducing emissions. To achieve the target of 50% reduction of industrial carbon intensity by 2020 based on the 2005 level, it is urgent to formulate specific [...] Read more.

As the main source of CO₂ emissions in China, the industrial sector has faced pressure for reducing emissions. To achieve the target of 50% reduction of industrial carbon intensity by 2020 based on the 2005 level, it is urgent to formulate specific CO₂ emission mitigation strategies in the provincial industrial sector. In order to provide decision-making support for the development and implementation of mitigation policy, our undesirable slack based measure (SBM) model is firstly applied to evaluate the industrial CO₂ emission efficiency under total-factor frame (TFICEE) in 13 prefecture-level cities of Jiangsu Province, the largest CO₂ emitter in China. Then, we analyze space-time distribution and distributional evolution tendency of TFICEE by using the GIS visualization method and kernel density estimation, respectively. Finally, we utilize the industrial abatement model to estimate the CO₂ abatement potential of Jiangsu’s industrial sector. The empirical results show that there exists a significant spatial inequality of TFICEE across various regions in Jiangsu, but the regional disparity has been narrowing during our study period. Additionally, average annual industrial CO₂ emission reductions in Jiangsu Province can attain 15,654.00 (ten thousand tons), accounting for 28.2% of its average annual actual emissions, which can be achieved by improving production technology, adjusting industrial structure and raising the level of industry concentration. Full article

(This article belongs to the Section Sustainable Engineering and Science)

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897 KiB

Open AccessReview

Measures of Transport-Related Social Exclusion: A Critical Review of the Literature

by Md. Kamruzzaman, Tan Yigitcanlar, Jay Yang and Mohd Afzan Mohamed

Sustainability 2016, 8(7), 696; https://doi.org/10.3390/su8070696 - 20 Jul 2016

Cited by 70 | Viewed by 13812

Abstract

Quantitative measures of transport disadvantage are reviewed in this paper from the perspective of their effectiveness to investigate social exclusion. The effectiveness is assessed using criteria derived through a review of the concepts of transport disadvantage and social exclusion and their operationalisation. The [...] Read more.

Quantitative measures of transport disadvantage are reviewed in this paper from the perspective of their effectiveness to investigate social exclusion. The effectiveness is assessed using criteria derived through a review of the concepts of transport disadvantage and social exclusion and their operationalisation. The specified criteria are related to issues of spatial (e.g., urban accessibility, and public transport accessibility), temporal (e.g., public transport availability, and facility opening hours), and social attributes of travel and activity participation (e.g., personal mobility, and disability). Four groups of transport disadvantage measures are identified and evaluated. These include deprivation-based measures, mobility-based measures, accessibility-based measures, and activity-based measures. The review suggests that although the first three categories of measures have traditionally been used to identify transport disadvantage, they do not satisfy issues surrounding activity participation—the key outcome of social exclusion. The activity space concept is a way in which these issues can be incorporated, as it is a measure of the outcomes of activity participation and their associated travel to that activity. Participation in an activity means that an individual has overcome the spatial, temporal and social barriers of travel for that activity. The research using the activity space concept has, however, inadequately identified individual travel and activity participation. This has been due to a separate application of a range of different indicators to assess activity space size. These indicators are by their nature multidimensional—e.g., area visited, distance travelled, and number of activity sites visited. Although each indicator represents a specific qualitative/quantitative aspect of travel and activity participation, researchers have treated these indicators in an isolated manner to identify transport disadvantage and consequently transport-related social exclusion. This paper identifies the weaknesses and strengths associated with these measures; and methods are directed to overcome the limitations. Full article

(This article belongs to the Section Sustainable Urban and Rural Development)

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264 KiB

Open AccessArticle

Does Adoption of Management Standards Deliver Efficiency Gain in Firms’ Pursuit of Sustainability Performance? An Empirical Investigation of Chinese Manufacturing Firms

by Xiaoling Wang, Haiying Lin and Olaf Weber

Sustainability 2016, 8(7), 694; https://doi.org/10.3390/su8070694 - 20 Jul 2016

Cited by 17 | Viewed by 5591

Abstract

Building on longitudinal data from 73 Chinese manufacturing firms during 2009–2012, we assess whether and how firms gain higher efficiency in achieving their sustainability goals by adopting management practice standards (ISO 9001, ISO 14001, and/or OHSAS 18001). We propose four pathways for firms [...] Read more.

Building on longitudinal data from 73 Chinese manufacturing firms during 2009–2012, we assess whether and how firms gain higher efficiency in achieving their sustainability goals by adopting management practice standards (ISO 9001, ISO 14001, and/or OHSAS 18001). We propose four pathways for firms to gain sustainability efficiency in their certification journey: participation, qualitative integration, quantitative expansion, and temporal accumulation. Our results confirm that firms certifying management standards gain higher efficiency in pursuing their sustainability goals than firms without these standards. We also find some support for increased efficiency effect in firms with diverse management systems over firms with only a single certificate in 2011. Finally, our results highlight the experiential and temporal accumulation effect of such efficiency gains, that is, firms with prior certification experience or having a longer certification history demonstrate higher efficiency gains in pursuing their sustainability goals. Full article

(This article belongs to the Section Economic and Business Aspects of Sustainability)

248 KiB

Open AccessArticle

Towards a More Sustainable Food Supply Chain: Opening up Invisible Waste in Food Service

by Belén Derqui, Teresa Fayos and Vicenc Fernandez

Sustainability 2016, 8(7), 693; https://doi.org/10.3390/su8070693 - 20 Jul 2016

Cited by 70 | Viewed by 13202

Abstract

Future challenges to the global food supply chain are complex. In order to embrace sustainability, companies should change their management practices towards more efficient resource use. Food waste being a misuse of resources, we identify its causes and possible ways of minimising it. [...] Read more.

Future challenges to the global food supply chain are complex. In order to embrace sustainability, companies should change their management practices towards more efficient resource use. Food waste being a misuse of resources, we identify its causes and possible ways of minimising it. To achieve this goal, we conducted explorative research with qualitative and quantitative data through in-depth semi-structured interviews and an open questionnaire with top Spanish food service companies. Results show that most businesses mainly tend to minimise food waste according to economic criteria, without taking into account the social, ethical or environmental factors. As a consequence, just “visible” food waste that has an economic impact on the results is minimised. Nevertheless, visibility of real waste is often low. At the same time, awareness of (and therefore initiatives to reduce) food waste that does not directly affect a firm’s profit can be increased through multi-stakeholder collaboration. Opportunities for reducing food waste therefore arise from increasing the visibility of food that is discarded as well as addressing plate waste. We identify best practices that could lead to a reduction of the amount of food waste generated in the out of home channel in Spain. Full article

(This article belongs to the Section Economic and Business Aspects of Sustainability)

1723 KiB

Open AccessReview

State-of-the-Art Review on Sustainable Design and Construction of Quieter Pavements—Part 2: Factors Affecting Tire-Pavement Noise and Prediction Models

by Okan Sirin

Sustainability 2016, 8(7), 692; https://doi.org/10.3390/su8070692 - 20 Jul 2016

Cited by 29 | Viewed by 7761

Abstract

Traffic noise is a combination of noises produced from a number of sources. Of all the traffic noise sources, tire-pavement noise, which is emitted as a result of the interaction of rolling, slipping, or dragging tires and the pavement surface, is the dominant [...] Read more.

Traffic noise is a combination of noises produced from a number of sources. Of all the traffic noise sources, tire-pavement noise, which is emitted as a result of the interaction of rolling, slipping, or dragging tires and the pavement surface, is the dominant contributor of overall noise, particularly when vehicles are moving at higher speeds. Therefore, a number of research studies have been conducted to identify and analyze the factors affecting the generation of tire-pavement interaction noise. This helps in identifying and selecting appropriate noise mitigation techniques. In this paper, an extensive literature survey on the factors affecting tire-pavement noise is presented, and different views on the impact of each individual factor are discussed. From the literature survey, it is also evident that there is a potential correlation between pavement’s material characteristics and tire-pavement noise. A comprehensive discussion about this correlation is presented in the paper. In addition, this paper discusses various mathematical models for predicting pavement noise, and their advantages and shortcomings. Full article

(This article belongs to the Section Sustainable Engineering and Science)

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Effect of speed on noise generation [<a href="#B2-sustainability-08-00692" class="html-bibr">2</a>]. Full article ">Figure 2
Noise contribution from the different source at the function of speed [<a href="#B5-sustainability-08-00692" class="html-bibr">5</a>]. Full article ">Figure 3
Changes in sound pressure level with time [<a href="#B37-sustainability-08-00692" class="html-bibr">37</a>]. Full article ">Figure 4
Changes of on board sound intensity (OBSI) levels with time [<a href="#B37-sustainability-08-00692" class="html-bibr">37</a>]. Full article ">Figure 5
Noise performance of dense graded asphalt (DGA) pavements of varying aggregate size for four European countries [<a href="#B45-sustainability-08-00692" class="html-bibr">45</a>]. Full article ">Figure 6
Noise performance of stone mosaic asphalt (SMA) pavements of varying aggregate size for four European countries [<a href="#B45-sustainability-08-00692" class="html-bibr">45</a>]. Full article ">Figure 7
Overall sound intensity level for European random transverse textured and ground Portland cement concrete (PCC) pavements and the average of groupings from the California/Arizona [<a href="#B45-sustainability-08-00692" class="html-bibr">45</a>]. Full article ">

3096 KiB

Open AccessArticle

Transforming Mature Tourism Resorts into Sustainable Tourism Destinations through Participatory Integrated Approaches: The Case of Puerto de la Cruz

by Serafin Corral, Jesús Hernández, Manuel Navarro Ibáñez and José Luis Rivero Ceballos

Sustainability 2016, 8(7), 680; https://doi.org/10.3390/su8070680 - 20 Jul 2016

Cited by 8 | Viewed by 6131

Abstract

Transforming mature tourism resorts has evolved toward a greater involvement of public authorities and away from the mere renovation of public spaces. Authorities today are required to lead the reorganization of tourism activities through the development of co-operative networks between all stakeholders involved. [...] Read more.

Transforming mature tourism resorts has evolved toward a greater involvement of public authorities and away from the mere renovation of public spaces. Authorities today are required to lead the reorganization of tourism activities through the development of co-operative networks between all stakeholders involved. In this paper, a participatory integrated approach has been designed and implemented in collaboration with Spanish authorities and the tourism sector to propose a strategy to achieve the renovation of tourism resorts. This methodology was applied to Puerto de la Cruz, the oldest tourism destination in the Canary Islands and a clear paradigm of a consolidated resort. The objective is to define and implement policies to transform Puerto de la Cruz into a more sustainable tourism destination. Full article

(This article belongs to the Special Issue Sustainable Management in Tourism and Hospitality)

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767 KiB

Open AccessArticle

Life Cycle Assessment and Life Cycle Cost Analysis of Magnesia Spinel Brick Production

by Aysun Özkan, Zerrin Günkaya, Gülden Tok, Levent Karacasulu, Melike Metesoy, Müfide Banar and Alpagut Kara

Sustainability 2016, 8(7), 662; https://doi.org/10.3390/su8070662 - 20 Jul 2016

Cited by 37 | Viewed by 9234

Abstract

Sustainable use of natural resources in the production of construction materials has become a necessity both in Europe and Turkey. Construction products in Europe should have European Conformity (CE) and Environmental Product Declaration (EPD), an independently verified and registered document in line with [...] Read more.

Sustainable use of natural resources in the production of construction materials has become a necessity both in Europe and Turkey. Construction products in Europe should have European Conformity (CE) and Environmental Product Declaration (EPD), an independently verified and registered document in line with the European standard EN 15804. An EPD certificate can be created by performing a Life Cycle Assessment (LCA) study. In this particular work, an LCA study was carried out for a refractory brick production for environmental assessment. In addition to the LCA, the Life Cycle Cost (LCC) analysis was also applied for economic assessment. Firstly, a cradle-to-gate LCA was performed for one ton of magnesia spinel refractory brick. The CML IA method included in the licensed SimaPro 8.0.1 software was chosen to calculate impact categories (namely, abiotic depletion, global warming potential, acidification potential, eutrophication potential, human toxicity, ecotoxicity, ozone depletion potential, and photochemical oxidation potential). The LCC analysis was performed by developing a cost model for internal and external cost categories within the software. The results were supported by a sensitivity analysis. According to the results, the production of raw materials and the firing process in the magnesia spinel brick production were found to have several negative effects on the environment and were costly. Full article

(This article belongs to the Special Issue Sustainability and Materials)

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6006 KiB

Open AccessArticle

Experimental Study of a Small Scale Hydraulic System for Mechanical Wind Energy Conversion into Heat

by Tadas Zdankus, Jurgita Cerneckiene, Andrius Jurelionis and Juozas Vaiciunas

Sustainability 2016, 8(7), 637; https://doi.org/10.3390/su8070637 - 20 Jul 2016

Cited by 10 | Viewed by 5448

Abstract

Significant potential for reducing thermal energy consumption in buildings of moderate and cold climate countries lies within wind energy utilisation. Unlike solar irradiation, character of wind speeds in Central and Northern Europe correspond to the actual thermal energy demand in buildings. However, mechanical [...] Read more.

Significant potential for reducing thermal energy consumption in buildings of moderate and cold climate countries lies within wind energy utilisation. Unlike solar irradiation, character of wind speeds in Central and Northern Europe correspond to the actual thermal energy demand in buildings. However, mechanical wind energy undergoes transformation into electrical energy before being actually used as thermal energy in most wind energy applications. The study presented in this paper deals with hydraulic systems, designed for small-scale applications to eliminate the intermediate energy transformation as it converts mechanical wind energy into heat directly. The prototype unit containing a pump, flow control valve, oil tank and piping was developed and tested under laboratory conditions. Results of the experiments showed that the prototype system is highly efficient and adjustable to a broad wind velocity range by modifying the definite hydraulic system resistance. Development of such small-scale replicable units has the potential to promote “bottom-up” solutions for the transition to a zero carbon society. Full article

(This article belongs to the Special Issue Smart Energy Regions—Drivers and Barriers to the Implementation of Low Carbon Technologies at a Regional Scale)

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1056 KiB

Open AccessReview

What Is the Bioeconomy? A Review of the Literature

by Markus M. Bugge, Teis Hansen and Antje Klitkou

Sustainability 2016, 8(7), 691; https://doi.org/10.3390/su8070691 - 19 Jul 2016

Cited by 479 | Viewed by 33149

Abstract

The notion of the bioeconomy has gained importance in both research and policy debates over the last decade, and is frequently argued to be a key part of the solution to multiple grand challenges. Despite this, there seems to be little consensus concerning [...] Read more.

The notion of the bioeconomy has gained importance in both research and policy debates over the last decade, and is frequently argued to be a key part of the solution to multiple grand challenges. Despite this, there seems to be little consensus concerning what bioeconomy actually implies. Consequently, this paper seeks to enhance our understanding of what the notion of bioeconomy means by exploring the origins, uptake, and contents of the term “bioeconomy” in the academic literature. Firstly, we perform a bibliometric analysis that highlights that the bioeconomy research community is still rather fragmented and distributed across many different fields of science, even if natural and engineering sciences take up the most central role. Secondly, we carry out a literature review that identifies three visions of the bioeconomy. The bio-technology vision emphasises the importance of bio-technology research and application and commercialisation of bio-technology in different sectors of the economy. The bio-resource vision focuses on processing and upgrading of biological raw materials, as well as on the establishment of new value chains. Finally, the bio-ecology vision highlights sustainability and ecological processes that optimise the use of energy and nutrients, promote biodiversity, and avoid monocultures and soil degradation. Full article

(This article belongs to the Special Issue Innovation and Sustainable Development for the Bioeconomy)

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228 KiB

Open AccessArticle

Measuring Localisation Regionally to Form a Bhutanese Index

by Michelle M. Olivier, Benjamin P. Wilson and Jonathon L. Howard

Sustainability 2016, 8(7), 690; https://doi.org/10.3390/su8070690 - 19 Jul 2016

Cited by 3 | Viewed by 4576

Abstract

Localisation may be used as a strategy to remedy the harmful socio-ecological impacts of economic globalisation, and lead to improved sustainability achievements. This article describes the formation of a regional-level localisation index for the 20 districts of Bhutan, demonstrating a way to identify [...] Read more.

Localisation may be used as a strategy to remedy the harmful socio-ecological impacts of economic globalisation, and lead to improved sustainability achievements. This article describes the formation of a regional-level localisation index for the 20 districts of Bhutan, demonstrating a way to identify localised places using regionally specific data. Secondary source data were gathered in Bhutan according to localisation expert-identified metrics, which were then weighted, standardised, scored and ranked. This enabled the formation of a Bhutanese regional-level localisation index. The index may assist those seeking regional-level localisation case studies by enabling the identification of localised places in Bhutan. The article also summarises sustainability-planning interviews carried out across Bhutan to determine causal factors relating to localisation scores, in particular focusing on the top localisation-scoring district, Dagana. The interviews revealed that Bhutan is a highly localised country that has long and intentionally planned many aspects of localisation. Full article

1088 KiB

Open AccessArticle

Regional Port Productivity in APEC

by Yen-Chun Jim Wu, Chih-Hung Yuan, M. Goh and Yung-Hsiang Lu

Sustainability 2016, 8(7), 689; https://doi.org/10.3390/su8070689 - 19 Jul 2016

Cited by 4 | Viewed by 5126

Abstract

The regional growth of the goods and services trade has placed greater pressure on the ports of the Asia-Pacific Economic Cooperation (APEC) members, especially in the developing countries. The purpose of this study is to apply the generalized metafrontier Malmquist productivity index (gMMPI) [...] Read more.

The regional growth of the goods and services trade has placed greater pressure on the ports of the Asia-Pacific Economic Cooperation (APEC) members, especially in the developing countries. The purpose of this study is to apply the generalized metafrontier Malmquist productivity index (gMMPI) to compare the port productivity of developed countries (DCs) and developing countries (LDCs) in APEC. The results indicate that, first, the average rate of utilized capacity among the ports of APEC members was only 65.7% during 2002–2011, which means that another 34.3% of additional through put can be handled with the same level of resources. Second, the average productivity of the container ports in the DCs appeared to be higher than those located in the LDCs. The main sources of productive growth in the DCs were based on scale efficiency change (SEC), technical efficiency change (TEC), and potential technological relative change (PTRC), while the main source of productive growth in LDCs was based on SEC. Third, SEC appeared to be the dominant factor that affects the utilization of all ports. Full article

(This article belongs to the Special Issue Sustainability in Supply Chain Management)

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4614 KiB

Open AccessArticle

Modeling Urban Expansion in Bangkok Metropolitan Region Using Demographic–Economic Data through Cellular Automata-Markov Chain and Multi-Layer Perceptron-Markov Chain Models

by Chudech Losiri, Masahiko Nagai, Sarawut Ninsawat and Rajendra P. Shrestha

Sustainability 2016, 8(7), 686; https://doi.org/10.3390/su8070686 - 19 Jul 2016

Cited by 83 | Viewed by 14624

Abstract

Urban expansion is considered as one of the most important problems in several developing countries. Bangkok Metropolitan Region (BMR) is the urbanized and agglomerated area of Bangkok Metropolis (BM) and its vicinity, which confronts the expansion problem from the center of the city. [...] Read more.

Urban expansion is considered as one of the most important problems in several developing countries. Bangkok Metropolitan Region (BMR) is the urbanized and agglomerated area of Bangkok Metropolis (BM) and its vicinity, which confronts the expansion problem from the center of the city. Landsat images of 1988, 1993, 1998, 2003, 2008, and 2011 were used to detect the land use and land cover (LULC) changes. The demographic and economic data together with corresponding maps were used to determine the driving factors for land conversions. This study applied Cellular Automata-Markov Chain (CA-MC) and Multi-Layer Perceptron-Markov Chain (MLP-MC) to model LULC and urban expansions. The performance of the CA-MC and MLP-MC yielded more than 90% overall accuracy to predict the LULC, especially the MLP-MC method. Further, the annual population and economic growth rates were considered to produce the land demand for the LULC in 2014 and 2035 using the statistical extrapolation and system dynamics (SD). It was evident that the simulated map in 2014 resulting from the SD yielded the highest accuracy. Therefore, this study applied the SD method to generate the land demand for simulating LULC in 2035. The outcome showed that urban occupied the land around a half of the BMR. Full article

(This article belongs to the Special Issue Development of Sustainable Rural Regions in the Face of Increasing Globalization and Urbanization)

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Open AccessArticle

A Quantitative Method for Long-Term Water Erosion Impacts on Productivity with a Lack of Field Experiments: A Case Study in Huaihe Watershed, China

by Degen Lin, Hao Guo, Fang Lian, Yuan Gao, Yaojie Yue and Jing’ai Wang

Sustainability 2016, 8(7), 675; https://doi.org/10.3390/su8070675 - 19 Jul 2016

Cited by 2 | Viewed by 5959

Abstract

Water erosion causes reduced farmland productivity, and with a longer period of cultivation, agricultural productivity becomes increasingly vulnerable. The vulnerability of farmland productivity needs assessment due to long-term water erosion. The key to quantitative assessment is to propose a quantitative method with water [...] Read more.

Water erosion causes reduced farmland productivity, and with a longer period of cultivation, agricultural productivity becomes increasingly vulnerable. The vulnerability of farmland productivity needs assessment due to long-term water erosion. The key to quantitative assessment is to propose a quantitative method with water loss scenarios to calculate productivity losses due to long-term water erosion. This study uses the agricultural policy environmental extender (APEX) model and the global hydrological watershed unit and selects the Huaihe River watershed as a case study to describe the methodology. An erosion-variable control method considering soil and water conservation measure scenarios was used to study the relationship between long-term erosion and productivity losses and to fit with 3D surface (to come up with three elements, which are time, the cumulative amount of water erosion and productivity losses) to measure long-term water erosion. Results showed that: (1) the 3D surfaces fit significantly well; fitting by the 3D surface can more accurately reflect the impact of long-term water erosion on productivity than fitting by the 2D curve (to come up with two elements, which are water erosion and productivity losses); (2) the cumulative loss surface can reflect differences in productivity loss caused by long-term water erosion. Full article

(This article belongs to the Special Issue Sustainable Productive Systems – Assessing the Past, Envisioning the Future)

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Study area (the basin ID was adopted from HydroSHEDS). Full article ">Figure 2
Research framework: (a) build the agricultural policy environmental extender (APEX) model with localization parameters and localization data of the study area in order to simulate long-term water erosion and productivity; (b) use the soil and water conservation measures’ scenarios to get a group of samples of long-term water erosion intensity and yield and build the relationship between cumulative years, cumulative soil erosion and the yield loss, which is the residual between the erosion yield and optimal yield; (c) use the 3D surface based on the logistic model to quantify the loss of productivity affected by long-term water erosion. Full article ">Figure 3
Simulated and observed yields in Huaihe River Watershed 434298 (Lushan). Full article ">Figure 4
Cumulative loss surface for long-term accumulated water erosion in the Huaihe River basin (a) 4342980; (b) 4342840. Full article ">Figure 5
Spatial differences in the long-term accumulated loss for all basins in the study area. Full article ">Figure 6
Yield-time relationships for (a) the Cambisol of Itapiranga [<a href="#B22-sustainability-08-00675" class="html-bibr">22</a>] (―–bare soil; ------18% Sombrite; ······30% Sombrite; −··− fallow). Percentage of Sombrite refers to the rating of greenhouse shade netting; 18% gives approximate effective cover of 30%; 30% a cover of >90%; (b) the Cambisol at the 434298 watershed (------ worst soil and water conservation measure scenarios). Full article ">

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Open AccessArticle

A Patent Analysis for Sustainable Technology Management

by Junhyeog Choi, Sunghae Jun and Sangsung Park

Sustainability 2016, 8(7), 688; https://doi.org/10.3390/su8070688 - 18 Jul 2016

Cited by 25 | Viewed by 6948

Abstract

Technology analysis (TA) is an important issue in the management of technology. Most R&D (Research & Development) policies have depended on diverse TA results. Traditional TA results have been obtained through qualitative approaches such as the Delphi expert survey, scenario analysis, or technology [...] Read more.

Technology analysis (TA) is an important issue in the management of technology. Most R&D (Research & Development) policies have depended on diverse TA results. Traditional TA results have been obtained through qualitative approaches such as the Delphi expert survey, scenario analysis, or technology road mapping. Although they are representative methods for TA, they are not stable because their results are dependent on the experts’ knowledge and subjective experience. To solve this problem, recently many studies on TA have been focused on quantitative approaches, such as patent analysis. A patent document has diverse information of developed technologies, and thus, patent is one form of objective data for TA. In addition, sustainable technology has been a big issue in the TA fields, because most companies have their technological competitiveness through the sustainable technology. Sustainable technology is a technology keeping the technological superiority of a company. So a country as well as a company should consider sustainable technology for technological competition and continuous economic growth. Also it is important to manage sustainable technology in a given technology domain. In this paper, we propose a new patent analysis approach based on statistical analysis for the management of sustainable technology (MOST). Our proposed methodology for the MOST is to extract a technological structure and relationship for knowing the sustainable technology. To do this, we develop a hierarchical diagram of technology for finding the causal relationships among technological keywords of a given domain. The aim of the paper is to select the sustainable technology and to create the hierarchical technology paths to sustainable technology for the MOST. This contributes to planning R&D strategy for the sustainability of a company. To show how the methodology can be applied to real problem, we perform a case study using retrieved patent documents related to telematics technology. Full article

(This article belongs to the Section Sustainable Engineering and Science)

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Open AccessArticle

Study on Industrial Integration Development of the Energy Chemical Industry in Urumqi-Changji-Shihezi Urban Agglomeration, Xinjiang, NW China

by Guiling Wang, Degang Yang, Fuqiang Xia and Yannan Zhao

Sustainability 2016, 8(7), 683; https://doi.org/10.3390/su8070683 - 18 Jul 2016

Cited by 7 | Viewed by 5321

Abstract

With industrial integration accelerating in domestic and foreign enterprise, industrial integration is becoming the only way for regional development to break through its bottleneck. Compared with advanced foreign enterprises, there exists a significant gap in regional industrial integration, especially in the urban agglomeration [...] Read more.

With industrial integration accelerating in domestic and foreign enterprise, industrial integration is becoming the only way for regional development to break through its bottleneck. Compared with advanced foreign enterprises, there exists a significant gap in regional industrial integration, especially in the urban agglomeration of the energy chemical industries of Urumqi-Changji-Shihezi in Xinjiang. Findings from field visits and quantitative analysis show that the energy chemical industry in urban agglomeration is in a state of dispersed distribution, serious convergence in industrial structure, low level of specialization, and weak collaborative relationships. These issues seriously hamper the sustainable development of urban agglomeration. Specific actions aimed at these problems and the development bottleneck mainly include the integration of industrial parks in the central city and integration orientation on the level of urban agglomeration. Only by speeding up the pace of industry integration can Urumqi-Changji-Shihezi’s urban agglomeration maintain and improve its market competitiveness. Accordingly, it can promote innovation and sustainability in the energy chemical industry and improve the overall level of development. Full article

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Open AccessArticle

Effect of Land Use and Cover Change on Air Quality in Urban Sprawl

by Bin Zou, Shan Xu, Troy Sternberg and Xin Fang

Sustainability 2016, 8(7), 677; https://doi.org/10.3390/su8070677 - 18 Jul 2016

Cited by 59 | Viewed by 7515

Abstract

Due to the frequent urban air pollution episodes worldwide recently, decision-makers and government agencies are struggling for sustainable strategies to optimize urban land use/cover change (LUCC) and improve the air quality. This study, thus, aims to identify the underlying relationships between PM₁₀ [...] Read more.

Due to the frequent urban air pollution episodes worldwide recently, decision-makers and government agencies are struggling for sustainable strategies to optimize urban land use/cover change (LUCC) and improve the air quality. This study, thus, aims to identify the underlying relationships between PM₁₀ concentration variations and LUCC based on the simulated PM₁₀ surfaces in 2006 and 2013 in the Changsha-Zhuzhou-Xiangtan agglomeration (CZT), using a regression modeling approach. LUCC variables and associated landscape indexes are developed and correlated with PM₁₀ concentration variations at grid level. Results reveal that the overall mean PM₁₀ concentrations in the CZT declined from 106.74 μg/m³ to 94.37 μg/m³ between 2006 and 2013. Generally, variations of PM₁₀ concentrations are positively correlated with the increasing built-up area, and negatively correlated with the increase in forests. In newly-developed built-up areas, PM₁₀ concentrations declined with the increment of the landscape shape index and the Shannon diversity index and increased with the growing Aggregation index and Contagion index. In other areas, however, the reverse happens. These results suggest that LUCC caused by urban sprawl might be an important factor for the PM₁₀ concentration variation in the CZT. The influence of the landscape pattern on PM₁₀ concentration may vary in different stages of urban development. Full article

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Study domain, the Chang-Zhu-Tan agglomeration. Full article ">Figure 2
(a) Land use/cover; (b) spatial patterns of Aggregation index (AI); (c) spatial patterns of Contagion index (CONTAG); (d) spatial patterns of Landscape shape index (LSI); (e) spatial patterns of Perimeter-area fractal dimension (PAFRAC); and (f) spatial patterns of Shannon’s diversity index (SHDI), in the CZT. Full article ">Figure 3
Spatial distributions of PM10 concentration in 2006 and 2013. Full article ">Figure 4
(a) Variations of PM10 concentrations and variations of area proportions of (b) water; (c) bare soil; (d) built-up areas; (e) agricultural land; (f) forest; and (g) green land. Full article ">Figure 4 Cont.
(a) Variations of PM10 concentrations and variations of area proportions of (b) water; (c) bare soil; (d) built-up areas; (e) agricultural land; (f) forest; and (g) green land. Full article ">Figure 5
(a) Variation of PM10 concentration and Variation of (b) AI; (c) CONTAG; (d) LSI; (e) PAFRAC; (f) SHDI. Full article ">Figure 5 Cont.
(a) Variation of PM10 concentration and Variation of (b) AI; (c) CONTAG; (d) LSI; (e) PAFRAC; (f) SHDI. Full article ">

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Open AccessArticle

Contract Coordination Strategy of Supply Chain with Substitution under Supply Disruption and Stochastic Demand

by Rongfang Yan, Bin Lu and Jianjun Wu

Sustainability 2016, 8(7), 676; https://doi.org/10.3390/su8070676 - 18 Jul 2016

Cited by 6 | Viewed by 4639

Abstract

Based on two substitute products, we study the inventory and contract coordination strategy of a three-echelon supply chain, which consists of two suppliers, a manufacturer and a retailer, under supply disruption and stochastic demand. We investigate the channel gross profit model of the [...] Read more.

Based on two substitute products, we study the inventory and contract coordination strategy of a three-echelon supply chain, which consists of two suppliers, a manufacturer and a retailer, under supply disruption and stochastic demand. We investigate the channel gross profit model of the centralized supply chain and obtain a unique optimal order quantity. Under a decentralized decision, we find that the commonly-used wholesale price contracts cannot coordinate the system. Then, we propose a buy-back contract and prove that this contract can more efficiently coordinate the system than the former. At last, we show that the integrated performance of the decentralized system can be maximized through choosing the buy-back parameter by the manufacturer and reveal that the effects of supply uncertainty and the substitution behavior of customers on the optimal decision by numerical examples. Full article

(This article belongs to the Special Issue How Better Decision-Making Helps to Improve Sustainability - Part II)

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Model structures to be studied without the supply disruption. Full article ">Figure 2
Comparison of the profits in two cases: (a) wholesale price; and (b) buy-back contract (p = 0.2). Full article ">Figure 2 Cont.
Comparison of the profits in two cases: (a) wholesale price; and (b) buy-back contract (p = 0.2). Full article ">Figure 3
Comparison of the profits in two cases: (a) wholesale price; and (b) buy-back contract (p = 0.3). Full article ">Figure 4
Comparison of the profits in two cases: (a) wholesale price; and (b) buy-back contract (p = 0.5). Full article ">Figure 5
Comparison of the channel profit in three case of the centralized supply chain (CSC), the wholesale price contract (WPC) and the buy-back contract (BBC) when <math display="inline"> <semantics> <mrow> <mi>β</mi> <mo>=</mo> <mn>0</mn> <mo>.</mo> <mn>6</mn> </mrow> </semantics> </math>. Full article ">

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Open AccessArticle

Changes in Erosion and Runoff due to Replacement of Pasture Land with Sugarcane Crops

by Cristian Youlton, Edson Wendland, Jamil Alexandre Ayach Anache, Carlos Poblete-Echeverría and Seth Dabney

Sustainability 2016, 8(7), 685; https://doi.org/10.3390/su8070685 - 16 Jul 2016

Cited by 27 | Viewed by 7959

Abstract

The planting of sugarcane crops has expanded in the last decade in the southeast of Brazil, mainly due to its use for biofuel production, such as ethanol. This expansion in the State of São Paulo has occupied land that was previously used for [...] Read more.

The planting of sugarcane crops has expanded in the last decade in the southeast of Brazil, mainly due to its use for biofuel production, such as ethanol. This expansion in the State of São Paulo has occupied land that was previously used for cattle production. The change in land use affects soil and water through changes in ground cover and disturbance associated with farming practices. The objective of the following study was to determine the impact on runoff and erosion resulting from the conversion of pastureland to sugarcane for biofuel production. Erosion plots measuring 100 m² were built on a farm in Itirapina-SP, Brazil, on land with a slope gradient of 9% and soil composed of Quartz-sand Neosols (Typic quartzipsaments). The treatments were an 18-year old pasture and a new sugarcane plantation, with three replicates for each. After each rainfall episode, erosion and runoff were monitored during the first and second years after sugarcane was planted. The results show increased runoff and soil loss during the first year, though levels decreased in the second year when the sugarcane residue mulch ground cover increased. In addition, the necessary rainfall characteristics (e.g., intensity, duration) required to produce runoff and soil erosion were identified. Full article

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Open AccessArticle

Conjoint Analysis of Farmers’ Response to Conservation Incentives

by David Conner, Jennifer Miller, Asim Zia, Qingbin Wang and Heather Darby

Sustainability 2016, 8(7), 684; https://doi.org/10.3390/su8070684 - 16 Jul 2016

Cited by 13 | Viewed by 5829

Abstract

Environmental degradation threatens the long term resiliency of the US food and farming system. While USDA has provided conservation incentives for the adoption of best management practices (BMPs), only a small percentage of farms have participated in such conservation programs. This study uses [...] Read more.

Environmental degradation threatens the long term resiliency of the US food and farming system. While USDA has provided conservation incentives for the adoption of best management practices (BMPs), only a small percentage of farms have participated in such conservation programs. This study uses conjoint analysis to examine Vermont farmers’ underlying preferences and willingness-to-accept (WTA) incentives for three common BMPs. Based on the results of this survey, we hypothesize that federal cost share programs’ payments are below preferred incentive levels and that less familiar and more complex BMPs require a higher payment. Our implications focus on strategies to test these hypotheses and align incentive payments and other non-monetary options to increase BMP adoption. Full article

(This article belongs to the Section Sustainable Agriculture)

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Open AccessArticle

Assessing the Efficiency of Small-Scale and Bottom Trawler Vessels in Greece

by Dario Pinello, Angelos Liontakis, Alexandra Sintori, Irene Tzouramani and Konstantinos Polymeros

Sustainability 2016, 8(7), 681; https://doi.org/10.3390/su8070681 - 16 Jul 2016

Cited by 28 | Viewed by 5210

Abstract

This study explores the technical and scale efficiency of two types of Greek fishing vessels, small-scale vessels and bottom trawlers, using a bias-corrected input-oriented Data Envelopment Analysis model. Moreover, the associations between efficiency scores and vessel’s and skipper’s characteristics are also explored. The [...] Read more.

This study explores the technical and scale efficiency of two types of Greek fishing vessels, small-scale vessels and bottom trawlers, using a bias-corrected input-oriented Data Envelopment Analysis model. Moreover, the associations between efficiency scores and vessel’s and skipper’s characteristics are also explored. The results indicate that small-scale vessels achieve a very low average technical efficiency score (0.42) but a much higher scale efficiency score (0.81). Conversely, bottom trawlers achieve lower scale but higher technical efficiency scores (0.68 and 0.73, respectively). One important finding of this study is that the technical efficiency of small-scale vessels, in contrast to trawlers, is positively associated with the experience of the skipper. In a looser context, it can be said that small-scale fisheries mainly rely on skill, whereas bottom trawlers rely more on technology. This study concludes that there is space for improvement in efficiency, mainly for small-scale vessels, which could allow the achievement of the same level of output by using reduced inputs. Full article

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Open AccessArticle

Assessing Urban Forest Structure, Ecosystem Services, and Economic Benefits on Vacant Land

by Gunwoo Kim

Sustainability 2016, 8(7), 679; https://doi.org/10.3390/su8070679 - 16 Jul 2016

Cited by 35 | Viewed by 8366

Abstract

An urban forest assessment is essential for developing a baseline from which to measure changes and trends. The most precise way to assess urban forests is to measure and record every tree on a site, but although this may work well for relatively [...] Read more.

An urban forest assessment is essential for developing a baseline from which to measure changes and trends. The most precise way to assess urban forests is to measure and record every tree on a site, but although this may work well for relatively small populations (e.g., street trees, small parks), it is prohibitively expensive for large tree populations. Thus, random sampling offers a cost-effective way to assess urban forest structure and the associated ecosystem services for large-scale assessments. The methodology applied to assess ecosystem services in this study can also be used to assess the ecosystem services provided by vacant land in other urban contexts and improve urban forest policies, planning, and the management of vacant land. The study’s findings support the inclusion of trees on vacant land and contribute to a new vision of vacant land as a valuable ecological resource by demonstrating how green infrastructure can be used to enhance ecosystem health and promote a better quality of life for city residents. Full article

(This article belongs to the Special Issue Decision Support for Forest Ecosystem Management Sustainability)

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Open AccessArticle

Exploring Spatial-Temporal Patterns of Urban Human Mobility Hotspots

by Xiping Yang, Zhiyuan Zhao and Shiwei Lu

Sustainability 2016, 8(7), 674; https://doi.org/10.3390/su8070674 - 16 Jul 2016

Cited by 47 | Viewed by 8279

Abstract

Understanding human mobility patterns provides us with knowledge about human mobility in an urban context, which plays a critical role in urban planning, traffic management and the spread of disease. Recently, the availability of large-scale human-sensing datasets enables us to analyze human mobility [...] Read more.

Understanding human mobility patterns provides us with knowledge about human mobility in an urban context, which plays a critical role in urban planning, traffic management and the spread of disease. Recently, the availability of large-scale human-sensing datasets enables us to analyze human mobility patterns and the relationships between humans and their living environments on an unprecedented spatial and temporal scale to improve decision-making regarding the quality of life of citizens. This study aims to characterize the urban spatial-temporal dynamic from the perspective of human mobility hotspots by using mobile phone location data. We propose a workflow to identify human convergent and dispersive hotspots that represent the status of human mobility in local areas and group these hotspots into different classes according to clustering their temporal signatures. To illustrate our proposed approach, a case study of Shenzhen, China, has been conducted. Six typical spatial-temporal patterns in the city are identified and discussed by combining the spatial distribution of these identified patterns with urban functional areas. The findings enable us to understand the human dynamics in a different area of the city, which can serve as a reference for urban planning and traffic management. Full article

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Open AccessArticle

The Crowding-Out Effects of Garbage Fees and Voluntary Source Separation Programs on Waste Reduction: Evidence from China

by Hongyun Han, Zhijian Zhang and Sheng Xia

Sustainability 2016, 8(7), 678; https://doi.org/10.3390/su8070678 - 15 Jul 2016

Cited by 15 | Viewed by 7558

Abstract

This paper examines how and to what degree government policies of garbage fees and voluntary source separation programs, with free indoor containers and garbage bags, can affect the effectiveness of municipal solid waste (MSW) management, in the sense of achieving a desirable reduction [...] Read more.

This paper examines how and to what degree government policies of garbage fees and voluntary source separation programs, with free indoor containers and garbage bags, can affect the effectiveness of municipal solid waste (MSW) management, in the sense of achieving a desirable reduction of per capita MSW generation. Based on city-level panel data for years 1998–2012 in China, our empirical analysis indicates that per capita MSW generated is increasing with per capita disposable income, average household size, education levels of households, and the lagged per capita MSW. While both garbage fees and source separation programs have separately led to reductions in per capita waste generation, the interaction of the two policies has resulted in an increase in per capita waste generation due to the following crowding-out effects: Firstly, the positive effect of income dominates the negative effect of the garbage fee. Secondly, there are crowding-out effects of mandatory charging system and the subsidized voluntary source separation on per capita MSW generation. Thirdly, small subsidies and tax punishments have reduced the intrinsic motivation for voluntary source separation of MSW. Thus, compatible fee charging system, higher levels of subsidies, and well-designed public information and education campaigns are required to promote household waste source separation and reduction. Full article

(This article belongs to the Section Sustainable Urban and Rural Development)

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Open AccessArticle

Urban Distribution Mode Selection under Low Carbon Economy—A Case Study of Guangzhou City

by Lei Yang, Yiji Cai, Jiahui Hong, Yongqiang Shi and Zhiyong Zhang

Sustainability 2016, 8(7), 673; https://doi.org/10.3390/su8070673 - 15 Jul 2016

Cited by 7 | Viewed by 4943

Abstract

In the transformation of urban distribution industry, the problem of enterprises generally retaining a self-distribution mode is highlighted, and it is not conducive for enterprises to develop core business. Around the hot issue of climate change, but also the target of energy conservation [...] Read more.

In the transformation of urban distribution industry, the problem of enterprises generally retaining a self-distribution mode is highlighted, and it is not conducive for enterprises to develop core business. Around the hot issue of climate change, but also the target of energy conservation and emission reduction, this paper puts forward the method of urban distribution mode to reduce carbon emission intensity, introduces four kinds of typical urban distribution mode, analyzes the core influencing factors of urban distribution mode, studies the carbon accounting method of urban distribution, put forwards the method of low carbon urban distribution mode, analyzes the current situation of the distribution of Guangzhou City, determines the main research types of goods, and applies the method proposed in this paper to the specific enterprises. Urban distribution mode integration and carbon emissions intensity reduction are both considered in this work. The specific application result of 11.28% reduction on carbon emission intensity shows that this method can effectively guide enterprises to develop low carbon urban distribution mode and reduce carbon emission intensity of urban distribution. Full article

(This article belongs to the Section Sustainable Urban and Rural Development)

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