广东中山翠亨国家湿地公园大型底栖动物优势种生态位分析

A Niche Analysis of Dominant Species of Macrobenthos in Cuiheng National Wetland Park in Zhongshan of Guangdong

为了解中山翠亨湿地公园大型底栖动物优势种的种类组成和生态位特征,2022年4-9月进行定量采样调查,并利用Shannon-Wiener指数和Pianka的重叠指数对当地优势种进行生态位分析。结果表明:公园内的优势种共有8种,在河道生境的优势种有6种,滩涂生境的优势种有7种;大型底栖动物优势种的生态位宽度在0.071~0.831之间,各优势种的生态位宽度值均小于1;河道各优势种之间生态位重叠值在0.347~0.858之间,滩涂各优势种之间生态位重叠值在0.145~0.970之间,这些物种在一定程度上利用相同的环境资源。

In order to understand the species composition and niche characteristics of dominant species of macrobenthos in Cuiheng Wetland Park,Zhongshan,a quantitative sampling survey was conducted from April to September 2022,and niche analysis of dominant species was conducted using Shannon-Wiener index and Pianka's overlap index.The results showed that there were 8 dominant species in the park,6 dominant species in the watercourse habitat and 7 dominant species in the beach habitat.The niche width of the dominant macro benthonic species ranged from 0.071 to 0.831,and the niche width of each dominant species was less than 1.The niche overlap values of dominant species in watercourse ranged from 0.347-0.858,and that of dominant species in beach ranged from 0.145-0.970,indicating that these species used the same environmental resources to some extent.