首页> 中文期刊> 《草业科学》 >不同生境类型金莲花群落物种多样性比较

不同生境类型金莲花群落物种多样性比较

         

摘要

The Shannon-wiener index, richness index, Pielou evenness index, Jaccard index, and Sorenson index were used to investigate communities of Trollius chinensis grown in five different habitats in Cheng de of Hebei Province. The results showed that 182 plants species in 93 genera of 36 families were found in five different habitats; including forest open space, wetlands, valleys, slope lands and understory. There were the highest number of species in the forest open space and the lowest number in the understory. The hygrophytes were more than the xerophytes in the different habitats reflecting the hygrophilous character istics of T. chinensis communities. The Shannon-Wiener index of different habitats showed forest open space〉valley;〉 wetland〉 slope land〉 understory. The richness index of different habitats from large to small manifested as forest open space;〉wetland〉valley〉slope land〉understory. The order of evenness index of different habitats was valley;〉 forest open space;〉 slope land;〉 wetland〉 understory. The results from the comparison of community similarity showed that the difference between wetland and forest open space was the smallest; the difference between understory and valley was the biggest. In addition, the resuits of ANOVA of community diversity were more consistent with community similarity analysis. Soil moisture and light are the main factors affecting species diversity and community similarity of the T. chinensis community.%采用群落多样性指数中Shannon—Wiener多样性指数、丰富度指数、Pielou均匀度指数及群落相似性指数中的Jaccard指数和Sorenson指数,对河北省承德接坝地区5种生境条件下金莲花(Trolliuschinensis)群落进行比较。结果表明,林中空地、湿地、沟谷、荒坡及林下5种生境类型金莲花群落共包括36科、93属、182种,林中空地物种数最多,林下物种数最少。各群落的物种生态类型均表现为湿生植物多干旱生植物,反映了金莲花喜湿的特性。Shannon—Wiener多样性指数表现为林中空地〉沟

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