基于底栖大型无脊椎动物BI指数法的大浑太流域水质生物评价  

Biological Assessment of Water Quality in Dahuntai Basin Based on Benthic Macroinvertebrate BI Index Method

作　　者：李赫 LI He(Ecological Environment Monitoring Center of Liaoning Province,Shenyang Liaoning 120031)

机构地区：[1]辽宁省生态环境监测中心

出　　处：《现代农业科技》2019年第22期159-159,166,共2页Modern Agricultural Science and Technology

摘　　要：采用底栖大型无脊椎动物BI指数法对大浑太流域14个点位进行了水质评价,评价结果与理化监测结果基本吻合。共监测到底栖大型无脊椎动物3门7纲12目25科62属90种,以水生昆虫为主,其次为环节动物、软体动物和甲壳动物。BI指数在2.56~8.82之间,评价结果清洁的点位6个,均位于河流上游地区;良好的点位2个,位于河流中上游地区;轻污染的点位2个;中污染的点位3个;重污染的点位1个。中污染和重污染点位均位于河流下游及河口地区。The BI index method of benthic macroinvertebrates was used to evaluate the water quality of 14 sites in Dahuntai River Basin,the evaluation results were basically consistent with the physicochemical monitoring results.A total of 90 species,62 genera,25 families,12 orders,7 class and 3 phylum of benthic macroinvertebrates were detected,aquatic insects were dominant group,followed by annelids,mollusks and crustaceans.The BI index was in the range of 2.56 to 8.82.The number of clean points was 6,they were all located in the upper reaches of the river;The number of good points was 2,they were located in the upper and middle reaches of the river;The number of light pollution point was 2;The number of medium pollution points was 3;The number of heavy pollution point was 1.Medium pollution points and heavy pollution points were located in the lower reaches of rivers and estuaries.

关 键 词：底栖大型无脊椎动物 BI指数法 水质评价 大浑太流域 

分 类 号：X82[环境科学与工程—环境工程]