鸣翠湖湿地昆虫群落功能团组成及其多样性

Functional guild composition and diversity of insect communities in Mingcui Lake wetland

为研究鸣翠湖湿地昆虫群落功能团结构及其多样性的变化,于2016年5—10月,采用棋盘式扫网和陷阱捕捉的方法对鸣翠湖湿地昆虫进行调查,共采集昆虫11780只,隶属11目81科271种。根据食性归为4个亚群落和8个功能团,分析了昆虫群落的物种、功能团和亚群落多样性的时序动态。结果表明:刺吸类、中性昆虫和寄生类昆虫为优势功能团,个体数量分别占总数量的35.02%、32.67%和13.51%;优势类群为摇蚊科昆虫,个体数量占总数量的20.44%;在不同季节,植食性和中性昆虫的相对丰富度总体高于寄生性和捕食性昆虫;不同功能集团的优势类群丰富度随季节变化明显;不同月份昆虫群落的相对稳定性波动较大,但随季节演替时序分明。

To clarify the changes of functional guild structure and diversity of insect community in Mingcui Lake wetland,an investigation was conducted by sweep net and fall trap from May to October in 2016. In total,11780 individuals of insects were sampled,belonging to 271 species,81 families and 11 orders. They were classified into four sub-communities and eight functional guilds according to feeding habits. The temporal variations of species diversity,functional guild and sub-community were analyzed. The results showed that piercing-sucking insects,neutral insects and parasitic insects were the dominant guilds,accounting for 35. 02%,32. 67% and13.51% of the total individuals,respectively. The dominant insect species belonged to Chironomids,which accounted for 20.44% of the total abundance. In different seasons,the relative richness of phytophagous and neutral insects was generally higher than that of parasitic and predatory insects. The abundance of dominant groups in different functional guilds varied greatly with seasons. The relative stability of insect communities exhibited fluctuations among different months,but the seasonal succession of insect community was distinct.