GROUND BIOMASS ASSESSMENT OF SHRUB SPECIES IN TEHSIL TAKHT-E-NASRATI, PAKISTAN

摘要

The shrub biomass of different species of Tehsil Takht-e-Nasrati was different at different altitude. In the present studyit was found that the average shrub biomass was decreasing with increasing altitude. Result confirms that the biomass ofSaccharum bengalense was high 5020.38 Kg.hec-1 in phase 1 and phase 2 (4331.58 Kg.hec-1). The highest ground biomass1125.1 Kg.hec-1 of Zizyphus nummularia was found in Phase 3. Furthermore in Phase 4 the biomass of Capparis deciduaswas high 437.79 Kg.hec-1. Along with shrubs average biomass of Saccharum bengalense was high 2665.12 Kg.hec-1 and low13.47 Kg.hec-1 of Cassia angustifolia. With seasons the biomass of Saccharum bengalense (13800 Kg.hec-1) was greaterduring winter at Phase 1 and Periploc aaphylla (12.35 Kg.hec-1) biomass was lowers during spring at Phase 4. Incomparison in season the biomass was high in winter due to the dormant stage of shrubs in phase 1 while it was low insummer in phase 4. In winter the grazing process was stop due to agriculture point of view while in hilly area the grazingwas high and the low percentage of rain fall consequently the biomass was high in plain area as contrast to hilly area. Thebiomass of shrubs is high in winter while it was low in summer as the grazing and palatability rate was high in summer aswell as low in winter. The assessment of shrub biomass in research area is a requirement for successful management at thesame time as it gives a complete documentation for the area in complexity and work out unpredictable resources to helpimagine shrubs potency and behavior.