内蒙古克什克腾旗草原区草地类型及物种多样性研究

Study on Species Diversity and Various Grassland Types in Hexigten Banner in Inner Mongolia

为完善克什克腾旗草原主要分布区草地现有植被资料,进一步开发利用和保护该区域内的牧草种质,本研究在克什克腾旗草原选取具代表性的几种草地类型,采用样方法和普查法,调查和分析了群落物种组成、丰富度、多样性、相对重要值等特征,探讨了植物群落多样性与不同草地类型变化的关系。结果表明,克什克腾旗草原主要分布区植物资源丰富,共发现植物22科60种;草地植物群落以菊科(Compositae)、禾本科(Gramineae)植物为主,豆科(Leguminosae)、蔷薇科(Rosaceae)、藜科(Chenopodiaceae)、毛茛科(Ranunculaceae)次之。各草地类型中披碱草(Elymusnutans)+野豌豆(Viciasepium)+平车前(Plantagodepressa)类型丰富度指数、多样性指数、均匀度指数值均最高,为最优草原表现类型。

To improve the existing vegetation data of grassland in the main distribution area of grassland inHexigten Banner, the grassland types were investigated by sample method and census regenerated. The species composition, richness, diversity and relative importance of the community were investigated and analyzed. The relationship between plant community diversity and different grassland types was discussed. The results showed that there were abundant plant resources in the main distribution area of Hexigten Banner grassland, and 60 species of 22 families were found. The grassland plant community were mainly Compositae and Gramineae plants,Leguminosaes、Rosaceae、Chenopodiaceae、RanunculaceaeJusswere second. Among the grassland types, Elymusnutans + Viciasepium + Plantagodepressa grassland type had the highest index value, which was the best grassland performance type.