摘要
为使南水北调中线工程更为优质、合理地发挥作用并预防工程所带来的不利环境影响,分析讨论了中线工程水源地、总干渠以及因调水引起的汉江中下游的主要生态环境问题及潜在风险。工程水源地丹江口水库主要面临农业面源污染、重金属污染和库区消落带生态脆弱等环境问题。中线总干渠面临的主要环境问题包括藻类、贝类异常增殖和跨渠桥梁交通运输事故风险性污染,另外还存在地表水漫溢、地下水渗透和大气污染物沉降等带来的水质污染潜在风险。工程本身所引起的生态环境问题,是汉江流域中下游地区水量减少所导致的局部区域富营养化和水华。针对上述不同的环境问题,提出了应对策略和规避风险的建议。
In order to optimize the functionality of the Middle Route Project of South-to-North Water Diversion and minimize the adverse environmental impacts arising from operation of the project, the major ecological and environmental problems and the risks in the water source area, the main canal, and the middle and lower reaches of the Hanjiang River due to operation of the project were analyzed and discussed. The main environmental problems in the Danjiangkou Reservoir, the water source, include agricultural non-point source pollution, heavy metal pollution and ecological fragility in the reservoir fluctuated zone. The main environmental problems in the main canal include algae and shellfish proliferation and the risk of pollution due to traffic accidents happening on the bridges crossing the canal. In addition, there were potential risks of water pollution caused by surface water overflow, groundwater infiltration and settlement of atmospheric pollutants. The ecological and environmental problems caused by the water diversion were the eutrophication and algae blooms in the middle and lower reaches of the Hanjiang river due to decrease of upstream flow. Some suggestions have been made to address these problems and mitigate the risks.
作者
黄绳
农翕智
梁建奎
邵东国
钟华
HUANG Sheng;NONG Xizhi;LIANG Jiankui;SHAO Dongguo;ZHONG Hua(State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China;Construction and Administration Bureau of Middle Route Project of South-to-North Water Diversion,Beijing 100038,China)
出处
《人民长江》
北大核心
2019年第8期46-51,共6页
Yangtze River
基金
国家水体污染控制与治理重大科技专项项目(2017X07108-001)
关键词
水环境
水华
潜在风险
工程运行
总干渠
南水北调中线工程
Water environment
algal blooms
potential risk
canal operation
main canal
Middle Route of the South-to-North Water Diversion Project
