For collection of flora and fauna data, various physical features (slope, altitude etc.), habitat conditions (streams, topographic position, etc.) and vegetation types (trees and their canopies, shrubby/bushy growth, etc.) were used as criteria for stratifying the entire area of each VCF before beginning the actual sampling work. In each stratum systematic sampling method was followed for collection of data on flora, that is, the first point at which the collection of data started was selected at random and then the subsequent points were chosen systematically,