山西关帝山亚高山灌丛、草甸物种多样性的研究

运用12个多样性指数对12个灌丛群落样地和21个草甸群落样地进行了数量分析,结果如下,1)关帝山亚高山灌丛、草甸群落的物种多样性与海拔有较密切的关系,随着海拔的升高,其丰富度指数明显下降;均匀度指数表现为升高趋势;综合多样性指数也呈下降趋势;2)关帝山亚高山灌丛、草甸群落的物种多样性与坡度有较密切的关系,随着坡度的下降,灌丛、草甸的丰富度呈现平缓下降的趋势;均匀度和综合多样性呈现明显上升的趋势;3)在各多样性指数的变化幅度上,灌丛群落较草甸群落明显.

Species diversity of subalpine shrub and meadow counities on Guandi Mountain, Shanxi, China

Subalpine shrub and meadow communities were studied using 12 species diversity indices. The species diversity of subalpine shrub and meadow comunities on the Guandi Mountain was closely related to altitude. With increase in altitude, the species richness decreased, the species evenness increased, and species heterogeneity decreased. The diversity was also closely related with slope. As the slope angle decreased, richness slowly decreased, and the evenness and heterogeneity increased. The range of change in the different diversity indices of shrub communities was greater than that for meadow communities.