蠡湖渔业资源群落多样性的初步研究

Community biodiversity of fishery resources in Lihu

研究蠡湖渔业资源的种群组成结构特点，了解蠡湖渔业资源多样性的变化规律。2007年7—12月间，在蠡湖设置了10个采样点，通过采样调查，分析了蠡湖渔业资源种类和优势种以及群落多样性。结果表明：调查期间，青梢红铂和湖鲚是各个监测站点的优势品种；各个站点生物多样Shannon—Wiener指数介于2—3之问，依此判定蠡湖渔业资源群落的多样性和丰富度属于正常水平。生物多样性具有季节性，7、8月的生物多样性指数和其它月份有明显差异，而各个监测站点问没有明显的差异性。

This paper introduced the characteristics of species composition and variety regulation of biodiversity on fisheries resources in Lihu. From July to December in 2007, fisheries resources, top species composition and biodiversity of community were analyzed through setting up 10 sampling stations in Lihu. The results show that Erythroculter dabryi dabryi and Coilia ectenes taihuensis were top species of each sampling station from July to December in 2007. Summary biodiversity of each sampling station was between 2 and 3, indicating that diversity and abundance of Lihu were normal. The statistics analysis showed that biodiversity of July and August was significantly different from that of other months since biodiversity had seasonal characteristics, biodiversity of each sampling station had no obvious difference.