Abstract:Changes of species diversity and eco-environment at different successional stages in degraded ecosystem of subtropical monsoon evergreen broad-leaved forest were studied from January 1994 to October 1995, in Wuhua county, Guangdong Province, where the sites surveyed were low hills at 160 -180 m altitude. The forest coverage here was only 2.2%. and soil erosion accounted for 61.1% of the total sites studied. Three fixed plots were set up in different communities, namely secondary forest (400 m2) that had bee...