PJB-2011-196
VEGETATION ANALYSIS AND WINTER SEASON CARRYING CAPACITY OF SUB-TROPICAL, SUB HUMID RANGELANDS OF DHRABI WATERSHED, PAKISTAN
SANA-UL-HAQ1. S.N. MIRZA1, S.M. NIZAMI1, A. KHALIQ CHAUDHRY1, I.A. KHAN1 AND RAHMATULLAH QURESHI2*
Abstract
Quantitative vegetation assessment of Dhrabi watershed Chakwal, Pakistan was conducted to determine the productive potential and carrying capacity during winter 2008-09. Twelve sites of watershed were selected on the basis of variation in altitude using stratified sampling with line transect method. Overall, average grasses cover was 64.09% in the area with the highest value (73.41%) in the upper zone and lowest (56.33%) in the lower zone. Average trees and shrubs cover was 19.74% with highest value (29.72%) in the middle zone followed by upper (21.54%) and lower zone (7.95%). The range was found in good condition with overall carrying capacity of 2.41 ha/AU/4month. The main dominating plant species found in the area were Heteropogon contortus (Sariala ghaas), Cynodon dactylon (Khabbal ghaas), Desmostachya bipinnata (Dab ghaas) and Acacia modesta (Phulai).
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