云顶山亚高山草甸物种多样性研究

在野外样带调查的基础上,通过物种丰富度、物种多样性、物种均匀度等指标,对山西省云顶山亚高山草甸物种多样性及其变化规律进行了分析。结果表明,草甸物种多样性Shannon-wiener指数,Simpson指数和物种均匀度Pielou指数均表现为东南（SE）坡〉西南（SW）坡〉南（S）坡。物种均匀度Alatalo指数变化格局大致相同。总体来讲,东南坡具有较高的物种多样性和较低的物种丰富度,而南坡多样性较低丰富度较高。

Study on Species Diversity in Yunding Mountain Subalpine Meadow

Based on the field investigation,the species diversity and their changing law were studied using the richness index,Shannon-Wiener index,Simpson index and Pielou evenness index.The results showed that： the order of Simpson and Shannon-wiener index is South-EasternSouth-WesternSouthern.The order of Pielou and Alatalo index is South-EasternSouth-WesternSouthern,too.Higher species diversity but lower richness is observed on the South-Eastern slope,lower species diversity and higher richness is observed on the South slope.