蛇屋山金矿周边水域底栖动物调查与水质评价

摘要

Shewushan gold mine has been exploited for more than 30 years,and the mining activities have caused certain pollution to the surrounding water area.Aimed at the judgement of the water environmental quality around the mine,this paper investigated species composition and species diversity of macrofauna,and evaluated the water quality based on the diversity indexes.The results showed that 12 macrofauna species were identified totally,and the dominant species were mollusks.Both the Shannon-Weaver index and the Simpson index of macrofauna were lesser than 3.The water envrionment quality was slightly or middlely polluted assessed using the indexes,and it showed a good trend along the waterway.%蛇屋山金矿已开采30余年,多年矿山采选活动对周边水域造成了一定的污染.为评估矿山周边水环境质量现状,2014年对周边水域的底栖动物进行调查,利用底栖动物群落多样性指数进行水质评价.检出底栖动物12种,主要优势种为软体动物;各监测点底栖动物的Shannon-Weaver指数和Simpson指数均低于3,所反映的水环境质量在轻-中度污染之间,并沿水路走向呈现向好趋势.