青南高海拔地区高寒草甸植物群落多样性的研究  

Study on the Bio diversity of Alpine Plant Communities in the higher Altitude Area of South Qinghai

作　　者：杨力军[1] 李希来[2] 石德军 洒文君 

机构地区：[1]青海省畜牧兽医科学院,青海西宁810003 [2]青海大学农牧学院,青海西宁810003 [3]青海省畜牧厅畜牧工程项目办公室,青海西宁810008

出　　处：《草原与草坪》2000年第2期32-35,共4页Grassland and Turf

摘　　要：根据 42个样地的实地调查资料 ,采用不同的物种多样性指数、丰富度和均匀度测度指标对达日县建设乡高海拔地区高寒草甸的物种多样性进行了分析 ,结果表现为 :草地物种多样性随海拔的升高总体上呈现下降的趋势 ;“黑土滩”物种多样性指数、丰富度和均匀度指数最低 ,草地生物量也最低。苔草、嵩草和灌丛草甸 ,有着较高的物种多样性指数、丰富度和均匀度指数。单子叶和灌丛植物生物量随海拔梯度的变化较为复杂 ,在一定海拔范围内有较高的生物量。The paper analyzed the bio diversity of alpine mendow in Jiansho area of Dari County, adopting the bio diversity, abundance and evenness index of different plant species and using the data of 42 sampling site. The results show that the diversity of plant species decreases in general as the increase of altitude. The bio diversity, abundance and evenness of plant species on the 'Black Soil Type Dograded Grassland' are the lowest, as well as the biomass. Meadow dominated by Kobresia, Carex and shrubs shows a higher bio duversity, abundance and evenness. The biomass of monocotyledon and shrub communities varies, showing a high biomass only in certain range of altitude. The biomass of dicotyledon decrease as the increase of altitude.

关 键 词：高寒草甸 物种多样性 海拔高度 草地生物量 保护 

分 类 号：S812.3[农业科学—草业科学] Q16[农业科学—畜牧学]