洞庭湖三口河系地区水环境演变趋势研究  

WATER ENVIRONMENTAL EVOLUTION TRENDS IN THREE INLETS REGION OF THE DONGTING LAKE

作　　者：段玮娟 王旭[2,3] 史璇[2,4] 

机构地区：[1]湖南省水利水电勘测设计研究总院,湖南长沙410007 [2]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038 [3]北京科技大学土木与环境工程学院,北京100083 [4]东华大学环境科学与工程学院,上海201620

出　　处：《长江流域资源与环境》2012年第S2期132-137,共6页Resources and Environment in the Yangtze Basin

基　　金：国家自然基金委青年基金课题(51009150);国家自然科学基金创新研究群体基金项目(50721006)

摘　　要：三口河系是联系长江与洞庭湖的纽带,是洞庭湖区重要的组成部分。近年来,随着气候变化和人类活动影响加剧,江湖关系演变呈现出新的特征,三口河系地区水环境问题也日益突出。通过对该地区代表站南咀站和杨家垱站长系列水文水质资料监测数据的深入分析,从年际与年内两个尺度,系统探讨了三口河系地区水环境演变趋势。结果表明:洞庭湖三口河系地区水质在年际时间尺度上呈现逐渐恶化的趋势;年内TN、高锰酸钾指数表现为丰水期小,枯水期大,而TP表现为丰水期大,枯水期小的演变规律。然后从影响水量与水质两方面的因素,分析了该地区水环境演变的驱动机制,最后从水利工程的建设、面源污染控制以及法律法规与节水宣传等方面,初步构建了洞庭湖三口河系地区水环境调控策略。The three inlets river system is the link between the Yangtze River and the Dongting Lake,which is an important part of the Dongting Lake Area.In recent years,as the further effect of the climate change and human activity,the evolution of the river-lake relation presents a new feature and the water environment problem in this region is becoming more serious.Through the deep analysis of the long-term hydrological and water quality data of the representative stations in this region,from the annual and interannual dimensions,the water environmental evolution trend of this region was systematically discussed.The result showed that the interannual variation of water quality was worsening.Annually,the concentration of permanganate index and TN was higher in dry season and lower in rainy season,whereas TP was higher in rainy season and lower in dry season.And then the driven mechanism of water environmental evolution was analyzed from the aspects that influence the water quality and quantity.Finally,a initial control strategy to the water environment in this region is constructed from the construction of water conservancy projects,control of the non-point pollution and the formulation of law and regulations as well as the water saving publicity and so on.

关 键 词：水环境 演变趋势 驱动机制 三口河系 洞庭湖 

分 类 号：X524[环境科学与工程—环境工程]