Muhammad . Zahid
I am Muhammad Zahid. I did my bachelor and master of science in botany at Government College
University (GCU) Lahore. I am working as a young Researcher in Plant Ecology and
Dendrochronology lab., Department of Botany, Government College University, Lahore. My
core research fields are Remort sensing ,GIS, Biomonotroning of particulate matter (PM) air
pollution and Dendrochronology.
Phone: +923153308981
Address: Plant Ecology & Dendrochronology lab Govt. College University Lahore, Pakistan
University (GCU) Lahore. I am working as a young Researcher in Plant Ecology and
Dendrochronology lab., Department of Botany, Government College University, Lahore. My
core research fields are Remort sensing ,GIS, Biomonotroning of particulate matter (PM) air
pollution and Dendrochronology.
Phone: +923153308981
Address: Plant Ecology & Dendrochronology lab Govt. College University Lahore, Pakistan
less
InterestsView All (6)
Uploads
Papers
investigated by developing four different types of tree-ring width chronologies (by ARSTAN program)
in a mixed broadleaf forest of Kalam, KP, Pakistan. Firstly, measured tree-ring width series were crossdated
and identified the best and least (cross-matched with master plot) samples with the most applied
Skeleton Plot Model (SPM) method alongside checking the quality through statistical program
(COFECHA). Tree-ring attributes (age, growth rate and earlywood and latewood) were also measured
with maximum age (677 years) was observed in fir plant and maximum growth rate (6.096mm
year−1) in yew plant with clear demarcations of earlywood and latewood formation. Yew trees were
observed to be more sensitive species towards climatic variations (expressed population signal=0.945,
mean sensitivity=0.321 and signal to noise ratio=3.214) while fir trees were comparatively less
affected by climatic alterations of the study site (expressed population signal=0.954, mean
sensitivity=0.314 and signal to noise ratio=2.453). Correlation between tree-ring series of T. baccata
with the master series was found to be more significant as compared to A. pindrow after developing
series plots of both the species by using package dplR in R. Potential ecological and anatomical
explanations for these results were also discussed. Sensitivity of samples showed good climatic signals
which are valuable for dendroclimatic growth response investigations leading to reconstruction of
past climate as well as possible future climate predictions.
investigated by developing four different types of tree-ring width chronologies (by ARSTAN program)
in a mixed broadleaf forest of Kalam, KP, Pakistan. Firstly, measured tree-ring width series were crossdated
and identified the best and least (cross-matched with master plot) samples with the most applied
Skeleton Plot Model (SPM) method alongside checking the quality through statistical program
(COFECHA). Tree-ring attributes (age, growth rate and earlywood and latewood) were also measured
with maximum age (677 years) was observed in fir plant and maximum growth rate (6.096mm
year−1) in yew plant with clear demarcations of earlywood and latewood formation. Yew trees were
observed to be more sensitive species towards climatic variations (expressed population signal=0.945,
mean sensitivity=0.321 and signal to noise ratio=3.214) while fir trees were comparatively less
affected by climatic alterations of the study site (expressed population signal=0.954, mean
sensitivity=0.314 and signal to noise ratio=2.453). Correlation between tree-ring series of T. baccata
with the master series was found to be more significant as compared to A. pindrow after developing
series plots of both the species by using package dplR in R. Potential ecological and anatomical
explanations for these results were also discussed. Sensitivity of samples showed good climatic signals
which are valuable for dendroclimatic growth response investigations leading to reconstruction of
past climate as well as possible future climate predictions.