鸭绿江下游(丹东段)渔业水质现状变化趋势评价

Fishery water quality change trend in Dandong section of downstream Yalu River:An evaluation

近年来,经过综合治理,鸭绿江丹东段水质污染得到了有效控制,江水水质明显改善。为了给鸭绿江生态环境保护及渔业生产提供科学技术支撑。于2010—2015年长达6年对鸭绿江下游(丹东段)6个代表性断面进行了12次采样调查和实验室分析,并采用水质综合评价方法对鸭绿江下游(丹东段)水质进行评价。检测结果表明水质状况总体有所好转。采用流域综合水质指数法对鸭绿江下游(丹东段)总体水质状况进行评价,流域水质指数2010～2015年为3.83、2.67、2.83、3.50、2.17、2.67,该河段以Ⅱ～Ⅲ类水质为主;通过对该江段进行渔业水质分析发现,该流域渔业生态环境逐年变好,资源逐渐得以修复和增加。

The water quality of Dandong section of downstream Yalu River from 2010 to 2015 was investigated and analyzed. The water quality was comprehensively evaluated aeeoprding to the resuhs of 12 sampling survey in 6 representative sections. It was found that the water quality index from 2010 to 2015 was 3.83, 2.67, 2.83, 3.50, 2.17 and 2.67, respectively, The river water quality was mainly at Ⅱ and Ⅲ class, it is concluded that the ecological environment of this section of Yalu river for fishery industry has been improved.