广东海洋大学学报Issue(6)：51-57,7.
基于底栖动物完整性指数的南广河河流健康评价
Health Assessment of Nanguanghe River and Its Adjacent Waters by a Benthic-Index of Biotic Integrity
摘要
Abstract
Benthic macro-invertebrate samples were collected 6 times from 17 sample sections (3 reference sites and 14 damaged sites) in the Nanguanghe River and its adjacent waters in Sichuan Province in 2012. And a benthic index of biotic-integrity (B-IBI) was developed for their health assessment. The analyses of the range of index value distribution, Pearson correlation and judgment ability were performed on eighteen candidate metrics. Seven biological metrics were selected for the establishment of B-IBI via number of EPT taxa, number of Crustacea and Mollusca taxa, density proportion of Crustacea and Mollusca, number of intolerant taxa, density proportion of tolerant taxa , predator and plectoptera. B-IBI and B-BIBr (B-IBI relative) were calculated when these selected indices were transformed into a uniform score by using the ratio scoring method. The results showed that among the 17 sample sections in Nanguanghe River and its adjacent waters, 6 sections had BIBr value over 90, 3 between 80 -90, between 70 -80 was 2, 4 between 60-70 and 2 under 60. Moreover, the sampling sections with high BIBr value (over 80) were mainly situated in the influent(e.g., Tangba Village and Majiayan Village) and upper reaches of main stream (e.g., Shibei Village, Mutan Village and Liangshuijin Village); and the BIBr value of sampling sections of downstream, especially approaching to the estuary, were relatively low, especially the two sample sections Dawo Town and Nanguang Town were below 60.关键词
河流/健康评价/底栖动物完整性指数/大型底栖无脊椎动物/南广河Key words
river/health assessment/B-IBI index/benthic macroinvertebrate/Nanguanghe River分类
资源环境引用本文复制引用
周波,杜军,张志英,徐飞,卢华,李孟均..基于底栖动物完整性指数的南广河河流健康评价[J].广东海洋大学学报,2014,(6):51-57,7.基金项目
四川省科技厅项目“南广河健康评估” （）
