PJB-2018-696
FOREST TREE SPECIES COMPOSITION AND STRUCTURAL DIVERSITY OF THE FOREST OF SHAHOOR SHERINGAL VALLEY DIR KOHISTAN
Noor Ullah
Abstract
The present study provides a comprehensive detail about forest species composition and structural diversity of Shahoor Sheringal and Kandao valley at Sheringal forest sub division Dir upper, Khyber pakhtunkhwa (KP), Pakistan. The whole area was divided into four sites, Shahoor Bala,Shahoor Payen, Kandao and Janas. Sampling was started from bed of the stream and continues up to the top of the mountain. Different stations were established. Quadrat size of 30m ×30 m was taken for studying and measuring trees. A total 15 tree species belonging to nine families were identified in the study area. Different sampling sites were marked at different elevations. The different quantitative parameters i.e. density, relative frequency, cover, relative density, relative cover and frequency were calculated for each tree in each study site; and importance value index were recorded from different blocks. SDR values were then used for identification the dominant community in each study site. Cedrus deodara was observed as the highest average SDR value of 28.9. It is the dominant species and found in all sits; however it was more dominant in Janas site where its SDR value is noted as 40.18. The second highest dominant species is Quercus baloth having 19.9 SDR value. Tree species diversity was optimum at the middle of Janas site as compared to the Shahoor Payen where direct anthropogenic activities are continuous. The minimum diversity was observed at the top of Janas and Shahoor Bala due to high altitudes. It is observed that huge volumes of fuel wood and timber consumption were recorded from the area.
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