宁夏云雾山草原直翅目昆虫群落结构及其多样性

Community Structure and Diversity of Orthopteran in Mt.Yunwu Grassland Nature Reserve,Ningxia

用扫网法对云雾山保护区的核心区、缓冲区、实验区3个样区的直翅目昆虫进行调查统计,共采集直翅目昆虫1 748头,分属于11科24属30种,缓冲区11科24属30种824头;实验区11科22属28种675头;核心区9科14属21种249头.多样性分析表明,3个样区的Shannon-Wiener指数、均匀度指数、丰富度指数、种间相遇机率PIE、优势度指数、G-F指数等均为缓冲区最高、核心区最低;缓冲区与实验区相似性指数最高为0.93,其次依次是核心区与实验区为0.75,核心区与缓冲区为0.70.

The article conducted an investigation and statistics on orthoptera insects in 3 sample regionscore area, buffer area, and trial area of Yunwu Mountain with sweeping method, and collected 1,748 orthoptera insects, which belong to 11 families, 24 genus 30 species, 824 insects of 11 families 24 genus 30 species in buffer area; 675 insects of 11 families 22 genus 28 species in trial area; and 249 insects of 9 families 14 genus 21 species in core area. Diversity analysis shows that the Shannon-Wiener index, evenness index, diversity index, probability of interspecies encounter （PIE）, dominance index, G-F index are maximum in buffer area and minimum in core area; the similarity index in buffer and trial areas are highest, which is 0.93, the next in turn is core area and trial area, 0.75; the similarity index in core area and buffer area is 0.70.