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当前位置: 首页 > 文章 > 青海海北不同退化程度矮嵩草植物群落特征研究 安徽农业科学 2011,39 (20) 12250-12252
Position: Home > Articles > Characteristics of Kobresia humilis Community Structure at Different Degraded Levels in Northern Qinghai Journal of Anhui Agricultural Sciences 2011,39 (20) 12250-12252

青海海北不同退化程度矮嵩草植物群落特征研究

作  者：
史惠兰
单  位：
青海大学生物科学系/高原资源植物与细胞工程实验室
关键词：
矮嵩草草甸;群落结构;物种多样性
摘  要：
[目的]揭示高山草甸生态系统结构、功能,为高山草甸草场的开发利用、科学管理和草地畜牧业可持续发展提供科学依据。[方法]以青海海北原生矮嵩草(Kobresia hum ilis)植物群落(Ⅰ)、退化矮嵩草植物群落(Ⅱ)为研究对象,分析植物群落结构特征;同时,对矮嵩草群落生物量及多样性指数,丰富度指数进行相关性分析。[结果]群落(Ⅰ)的物种丰富度、生物多样性指数、生物量(分别为42、3.531、3 553.1 g/m2),均高于群落(Ⅱ)(分别为37、2.270、3 391.1 g/m2);群落总生物量与物种丰富度在0.01水平上呈极显著正相关,多样性指数与地上生物量、物种丰富度在0.01水平上呈极显著正相关。[结论]群落(Ⅰ)结构合理,地表植被覆盖度大,对该地区生物多样性、生态系统功能起重要维护功能。
译  名：
Characteristics of Kobresia humilis Community Structure at Different Degraded Levels in Northern Qinghai
作  者：
SHI Hui-lan(Laboratory of Resource Plant and Cell Engineering in the Qinghai-Tibet Plateau,Department of Biosciences,Qinghai University,Xining,Qinghai 810016)
关键词：
Kobresia humilis meadow;Community structure;Species diversity
摘  要：
[Objective] To reveal structure and function of alpine meadow ecosystem and thus to provide a scientific basis for development,utilization and scientific management of alpine meadow pasture as well as sustainable development of animal husbandry.[Method] Characteristics of Kobresia humilis communities with primary vegetation(community I) and degraded vegetation(community II) were analyzed.[Result] Species richness,biodiversity indices and biomass of the community I were respectively 42,3.531 and 3 553.1 g/m2,which were respectively higher than those of the community II(37,2.270 and 3 391.1 g/m2).Correlation analysis show that community biomass was correlated positively with the richness index(P<0.01),and biodiversity index was correlated positively with aboveground biomass and the richness index(P<0.01).[Conclusion] The Kobresia humilis community I has reasonable structure and large coverage of ground vegetation,which play an important role in maintenance of biodiversity and ecosystem function.

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