The height, coverage and diameter at breast height of the trees (≥5m) were recorded individually. Three (25m2) shrub quadrats and three (1m2) herb quadrats were established randomly in each plant plot. The species present and the frequency, height and percentage of canopy cover were determined for each quadrat. Vegetation cover data were recorded using the ordinal scale of Van-der-Marel (1979). The location of observation points, including altitude, longitude and
latitude, were determined by Global Position System.