洞庭湖鱼类群落结构和生物多样性分析

[目的]对洞庭湖鱼类群落结构及生物多样性进行分析。[方法]通过对洞庭湖鱼类资源进行初步调查,并对洞庭湖鱼种类情况、鱼类生物量情况、优势鱼类情况以及鱼类多样性情况进行了分析。[结果]洞庭湖各区域鱼类物种数量均相差不大,其生物量最多的是鲤鱼。洞庭湖优势种鱼类比例依次为鲤科、鮠科、鮨科、鳅科。洞庭湖鱼类Shannon-Wiener(H1)指数的变化范围为1.681~2.511,丰富度(R)指数的变化范围为1.851~2.584,Pielou(J')指数的变化范围为0.581~0.879。相关性分析表明,洞庭湖鱼类Shannon-Wiener(H1)指数与丰富度(R)指数、Shannon-Wiener(H1)指数与Pielou(J')指数均呈高度相关性。[结论]该研究结果可为洞庭湖的生态修复提供理论基础。

Analysis on Community Structure and Biodiversity of Fish in Dongting Lake

Objective] The aim was to analyze community structure and biodiversity of fish in Dongting Lake.[Method] Fish resources in Dongting Lake was investigated, fish species, fish biomass, dominant species and diversity were analyzed.[Result] The results showed that the number of fish species in all areas of Dongting Lake were not quite different , and the largest biomass was carp.The dominant fish species in Dongting Lake were Cyprinidae, Bagridae, Serranidae, Cobitidae.The variation range of the Shannon-Wiener (H1 ) index of the Dongting Lake fish was between 1.681-2.511, the range of richness (R) index was between 1.851-2.584, and the variation range of Pielou(J′)index was between 0.581-0.879.The correlation analysis showed that the Shannon-Wiener (H1) index and richness (R) index, Shannon-Wiener (H1) index and Pielou(J′) index were all highly correlated.[Conclusion] The study can provide theoretical basis for ecological restoration of Dongting Lake.