The Monograph provides a comprehensive description and analysis of terrestril vegetation in minor details based on extensive field sampling and plant diversity analysis. It gives insight of general vegetation characteristics and diversity of plants to post graduate and research students, teacher forest personnel managers and planners, the gradual rarefaction and eventual local extinction of plant species of different habitats have been viewed in the light of perceived changes in the local climate conditions during the last few decades the spcial feathure of the monograph is the investigation of loss pattern of the species with change in landuse pattern and disturnances associated with socio-economic activities in the region since 1960s. The pressure on biodiversity and ecosystems services in ever increasing. Taking board and small scale environmental variation and historical disturbance regimes into consideration, the probable measures of the change in the pattern of species diversity and tha rate and reason of biodiversity loss may be made to devise mechanism for region-specific species conservation.