基于大型底栖动物完整性指数的辽河流域水生态健康评价  

Water Ecological Health Assessment of Liaohe River Basin Based on the Integrity Index of Benthic Macroinvertebrates

作　　者：姜永伟 卢雁 问青春 李杨 王业耀[2] 许人骥[2] 金小伟[2] 阴琨[2] JIANG Yongwei;LU Yan;WEN Qingchun;LI Yang;WANG Yeyao;XU Renji;JIN Xiaowei;YIN Kun(Liaoning Eco-environmental Monitoring Center,Liaoning Shenyang 120031,China;China National Environmental Monitoring Centre,Beijing 100012,China)

机构地区：[1]辽宁省生态环境监测中心,辽宁沈阳120031 [2]中国环境监测总站,北京100012

出　　处：《环境保护科学》2020年第6期103-109,共7页Environmental Protection Science

基　　金：国家水体污染控制与治理重大专项课题(2012ZX07505003)。

摘　　要：文章以2018年4月辽河流域31个点位(13个参照点,18个监测点)大型底栖动物数据为基础,选取了20个参数进行分布范围、判别能力和相关性分析,确定了构建辽河流域B-IBI(大型底栖动物完整性指数)指标体系的6个参数,分别为总分类单元数、摇蚊分类单元数、EPT百分比、敏感类群百分比、BI指数和ASPT指数。采用比值法统一了6个参数的评价量纲,参数值加和得到B-IBI值。以参照位点25%分位数法建立了辽河流域B-IBI评价标准。结果表明:17个点位为健康,9个为良好,5个为一般,辽河流域整体处于健康一般状态,较2007年辽河流域完整性评价结果有明显改善。Based on the benthic macroinvertebrate communities at 31 points(13 reference points and 18 monitoring points)in Liaohe river basin in April 2018,20 parameters were selected to analyze the distribution range,the discriminant ability and the correlation.The 6 parameters for constructing the B-IBI index system of Liaohe river basin were clarified,including the total number of classification units,the number of chironomidae classification units,the percentage of EPT,the percentage of sensitive groups,the BI index and the ASPT index.The evaluation dimensions of 6 parameters were unified by the ratio method,and the B-IBI values were obtained by summing the parameter values.The B-IBI evaluation standard of Liaohe river basin was established by the reference points 25%quantile method.The results showed that 17 points were healthy,9 were fine and 5 were general.The ecological status of Liaohe river basin was in the health-general level,which was improved significantly than that in 2007.

关 键 词：辽河流域 大型底栖动物 大型底栖动物完整性指数(B-IBI) 健康一般状态 

分 类 号：X286[环境科学与工程—环境科学]