摘要
长江上游重庆段人口密集,由于历史的原因,环境方面基础设施落后,大量未经处理的工业废水、城市生活污水、船舶污染物和大面积的农田地表径流汇入长江及次级河流。特别是三峡大坝建成蓄水之后,主河道和支流水体流动明显变缓,加之长距离回水,部分次级河流自2003年起明显富营养化,并有逐渐加重的趋势。本文综合了2002～2009年对长江三峡水库入库河流营养状态的研究,得出了次级河流水体综合营养状态的评价,并结合三峡库区现有污水和垃圾处理设施处理能力与实际排放量的分析,对于库区支流富营养化趋势进行预测。最后,通过总结国内外已提出的许多行之有效的富营养化防治措施,对三峡库区的富营养化防治提出一些建议。
The upper reaches of the Yangtze River in Chongqing is densely populated. Due to some historical reasons, the environmental infrastructure there is backward. Huge quantifies of intreated industrial wastewater, sewage from cities, shipping pollutants and surface runoff of large areas of farmlands are poured into the Yangtze River and its sub - rivers. In particular after the completion and storage of the Three Gorges Dam, the flow velocity of the main channel as well as the tributaries obviously slows down in addition to the long - distance backwater, so the eutrophication has arisen in certain sub - rivers since the year 2003 and has a tendency to worsen. In this paper,the nutritional status of the inflow rivers of the Three Gorges Reservoir were integratedly studied, and a comprehensive assessment of the nutritional status of the branch rivers was obtained. Finally, some suggestions were made for preventing and controlling the eutrophication in the Three Gorges Reservoir Area by summarizing some effective measures of the prevention and control of eutrophication at home and abroad.
出处
《山东农业科学》
2009年第12期74-80,共7页
Shandong Agricultural Sciences
基金
国务院三峡工程建设委员会办公室重点科技项目(项目编号:KY-01-02-01)
关键词
三峡水库
次级河流
富营养化
防治措施
The Three Gorges Reservoir
Sub-rivers
Eutrophication
Prevention and control measures
