4.3 Article

VEGETATION COMPOSITION AND BIOLOGICAL SPECTRA OF THE DISTRICT CHAKWAL, PAKISTAN USING MULTIVARIATE ANALYSES

Journal

PAKISTAN JOURNAL OF BOTANY
Volume 54, Issue 6, Pages 2241-2251

Publisher

PAKISTAN BOTANICAL SOC
DOI: 10.30848/PJB2022-6(22)

Keywords

Plant communities; Remnant vegetation; Detrended Correspondence Analysis; Canonical Correspondence Analysis; Pothwar plateau; District Chakwal

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The vegetation analysis of District Chakwal in Pakistan revealed that altitude, moisture, and soil pH are significant factors influencing the formation of plant communities. Due to excessive utilization of vegetation by local inhabitants, proper management is urgently needed.
The vegetation analysis was undertaken of the District Chakwal which is located at the beginning of the Pothwar plateau during 2015 to 2017. Stratified random vegetation sampling technique was used along the 14 altitudinal transects of 70 sampling sites with 700 plots. The Cluster Analysis classified six dominant plant communities viz., 1) Lantana-Parthenium-Cannabis (LPC) community, 2) Calotropis-Chrysopogon-Melia (CCM) community, 3) Cynodon-Cenchrus-Tecomella (CCT) community, 4) Zizyphus-Zizyphus-Capparis (ZZC) community, 5) Dalbergia-Heteropogon-Prosopis (DHP) community and 6) Acacia-Justicia-Dodonaea (AJD) community. Canonical Correspondence Analysis (CCA) tool was applied to confirm the studied climatic variables in association with the existing plant communities. The CCA results revealed that total variations in the response data were 3.827 and 32.7% as explained by the explanatory variables. On the basis of conditional (net) term effects, moisture [Pseudo-F 1.7; p(adj) 0.00243] and soil pH [Pseudo-F 1.6; p(adj) 0.00243] were detected as the most important and significant factors towards explaining the variations among different vegetation communities. It was concluded that altitude, electrical conductivity and soil pH were the significant environmental factors that play role in the formation of major plant communities in the District Chakwal. Being the dominance of natural remnant vegetation in this mountainous terrain, local inhabitants are continuously exerting pressure for utilizing the century's old vegetation especially for fuel wood and other uses so there is immediate need for proper management of this area.

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