PJB-1994-17
PHYTOSOCIOLOGY OF THE VANISHING TROPICAL DECIDUOUS FOREST IN DISTRICT SWABI, PAKISTAN. II-ORDINATION
FARRUKH HUSSAIN, MOINUDDIN AHMED1, GHAZALA SHAHEEN2 AND MUHAKHARA JAN DURRANI2
Abstract
The study deals with the multivariate analysis of the vegetation of Swabi District. Sociological relationships among the leading dominants in tree, shrub and herb layers are discussed separately. Chcmical and physical analysis of soils of each stand are given. The vegetation pattern of each layer of the community and its relationship to soil were examined with the help of polar ordination. Soil pH, CaCO3 and P2O5 were found to be the controlling factors in the distribution of vegetation. The overall vegetation is dominated by Acacia modesta, followed by Ziziphus mauritiana in the tree layer. Asparagus, lmodon, Torilis, Thymelaea, Qxalis and Desmostachya were important in the lower strata.
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