摘要
湖库的富营养化问题是目前国内外关注的热点,近十几年来研究者认为,松花湖的富营养化问题已达中度富营养化,可出现富营养化现象概率达60%。但松花湖并未出现富营养化现象,其原因为流域的污染趋势得到控制,由于外来污染源的特性和湖水变温层的形成,使营养物质的外源和内源出现高峰错开,不利于水生生物暴发生长。松花湖流域今后污染治理的重点是面源污染治理,特别是流域的生态修复与保护。
Eutrophication of lakes is a world-wide focal point at present.In recent ten years , researchers have also paid attention to eutrophication of Songhua Lake , and believed that its water has reached moderate eutrophication with an eutrophication probability of 60%.However , eutrophication has not occurred in Songhua Lake.The reasons are that the basin pollution trend has been under control , and that aquatic biological outbreak has been inhibited due to the characteristics of foreign sources and the formation of the lakes thermocline , making external and internal nutrient sources have different peaks.This paper also discusses the point that the future pollution control in Songhua Lake basin shall focus on non-point source pollution management , especially the basins ecological restoration and protection.
出处
《三峡环境与生态》
2013年第4期44-47,共4页
Environment and Ecology in the Three Gorges
关键词
松花湖
富营养化
变温层
生态修复
Songhua Lake
eutrophication
threshold
thermocline
