长白山土壤腹足类物种多样性初步研究

Species Diversity of Soil Gastropods from Changbai Mountain

自 1 993年 5月至 1 0月对吉林长白山森林生态系统定位站的土壤腹足类进行了多样性调查 .据初步调查的结果显示 ,长白山地区土壤腹足类种类少而单调 ,采样区仅发现 1 5种 ,隶属于腹足纲 9科 1 3属 .采样区土壤腹足类物种多样性指数和丰富度指数都是 5月份最低 ,8月份达最大值 ,之后逐渐减小 ;均匀度指数 5月份最高 ,7月份最低 ;单纯度指数也是 5月份最高 ,最低值出现在 1 0月份 .

From May to October 1993, an on-the-spot research of soil gastropods was carried out in the Changbai Mountain Forestry Research Stations, Jilin. Only 15 species of soil gastropods were recognized to belong to 13 genera of 9 families, The results show that values of species richness index and Shannon-Wiener index are the lowest in May and highest in August, then decreased gradually. The average Shannon-Wiener index is high in May and low in July. The pureness index is high in May and low in October. The Shannon-Wiener index of soil gastropods living in the layer of dead leaves is higher than that of the soil.