贵州茂兰自然保护区蜻蜓多样性初步研究

2011年7月在贵州茂兰自然保护区的一些比较适合蜻蜓生长的水域附近进行了蜻蜓采集,用静观和网捕法记录采集路线两侧各20m范围内的蜻蜓,鉴定统计后分析其区系成分及多样性.结果表明:1)贵州茂兰地区现有蜻蜓65种,隶属于11科42属;2)东洋界种类较多,有31种,占总数的47.69％;古北界种类相对较少,只有1种,约占总数的1.54％;3)贵州茂兰地区蜻蜓的多样性指数为2.8617,均匀度指数为0.6855,优势度指数为0.1385,优势集中性指数为0.1006;4)5个样点之间的相似性指数均在30％ ～55％之间,且只有捞村与翁昂为53.41％,捞村52.77％大于板王50％,这可能与茂兰地区生境的多样性相对较高,适宜蜻蜓生存的生境多有关.

Study on Fauna and Diversity of Odonata in Maolan Area of Guizhou

The resources of dragonflies are investigated in some habitats which were suitable to dragonflies in Maolan area of Guizhou in July,2011.The dragonflies were recorded and collected in the space of 20 metres along the sample lines by watching and netting methods,the fauna and diversity of the dragonflies were also analysed after the identification and calculation.The results showed:1) 65 species were recorded in Maolan area of Guizhou which belonged to 42 genera,11 families.2) Oriental species was a dominant one which owned 31 species accounted for 47.69% in total;Palearctic species was relatively poor,accounting for 1.54% in total.3) The diversity index in Maolan area of Guizhou dragonfly was 2.8617,the evenness index was 0.6855,and the dominance index was 0.1385,and the superiority centrality index was 0.1006.4) the similarity index of these five sample sites were between 30% to 55%,only two of them were over 50%,which was 53.41% in Laocun-Wengang,and 52.77% in Laocun-Banwang,it was possibly related to the habitats in Maolan area which were more suitable for the dragonfly and higher in the diversity of habitats.