摘要
根据2011~2017年溱湖湿地底栖动物调查数据,分析了底栖动物种群组成、优势种、生物指数的变化。结果表明:2011~2017年间共记录底栖动物3门7纲36属(种),年度间底栖动物种类组成有一定的波动变化,但摇蚊幼虫一直是主要种群;底栖动物种群密度组成以耐污型的寡毛类和摇蚊幼虫占优势,2014~2016年寡毛类和摇蚊幼虫密度比例略有下降,而多毛类、甲壳动物、软体动物种群密度相对上升。采用生物指数评价,溱湖湿地水质由重污染转为中污染。
Based on monitoring data were collected to analyze the variations of population compostion,dominant species and biological indexes of macrozoobenthos in Qinhu Wetland from the years 2011 to 2017.Results showed that 36 species from 7 classes and 3 phyla were recorded in seven years.There was a certain fluctuation in the species composition of macrozoobenthos in each year,but the chironomidae larvaes were always the dominant species.The population density of the macrozoobenos were dominant of the pollution-tolerant oligochaeta and chironomidae larvaes,the density decreased slightly from 2014 to 2016,and the density of polychaete,crustacea and mollusk relatively went up.With the comprehensive evaluation of bioindexes,the water quality of Qinhu wetland had been transformed from heavily polluted to moderately polluted.
作者
孙海涛
卜伟
朱宇芳
朱希希
Sun Haitao;Bu Wei;Zhu Yufang;Zhu Xixi(Taizhou Environmental Monitoring Center Station,Taizhou Jiangsu 225300,China)
出处
《环境与发展》
2020年第5期199-200,共2页
Environment & Development
关键词
溱湖湿地
底栖动物
群落结构
生物指数
水质评价
Qinhu Wetland
Macrobenthos
Community structure
Biological index
Water quality assessment
