Species composition and diversity of different shrub communities in West Guangxi
Ten different shrub communities distributed in nine counties of West Guangxi were investigated through field survey. The analysis of their importance values ( IV) , species compositions, biomass and diversity showed that diverse shrubs were widespread in the areas with 87 shrub species belong to 78 genera and 47 families, and 56 kinds of herbs belong to 48 genera and 31 families, being recorded. Species from Eup horbiaceae, Rosaceae, Verbenaceae dominated the communities. The communities mainly contained shrub and herb layers. The shrub layer coverage ranged from 30%to 70%, average height 0.75 to 3.25 m, few outliers with height> 5 m. The herb layer coverage was 3% to 90%, av-erage height 0.4 to 1.3 m, often below 1 m. Dominant species’ important value, diversity and grass growth varied a-mong different shrub populations, and monodominant communities generally had higher dominant species’ importantvalue than polydominant communities, while the latter had higher diversity index, more species, representing even distribution and complex stable structures. Species’ richness, shannon indices, dominance indices and evenness indi-ces were positively and significantly correlated. Community No. 9 ( Quercus fabri+Coriaria nepalens+Pyracantha for-tuneana) and No. 10 ( Vitex negundo + Cipadessa baccifera) had higher species richness and diversity. This provides the information for shrub resoruce conservation in West Guangxi.
West Guangxishrubsdiversityspecies compositiondominant species
国家科技期刊平台
NSTL
万方数据
维普
