吉林查干湖总氮变化的特点及调控对策  

The characteristics of the total nitrogen diversification in Lake Chagan of Jilin and regulation countermeasure

作　　者：董建伟[1] 赵爽 

机构地区：[1]吉林省水利科学研究院,吉林长春130022 [2]吉林查干湖国家级自然保护区管理局,吉林松原138000

出　　处：《吉林水利》2011年第8期1-5,共5页Jilin Water Resources

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07207-006-04)

摘　　要：吉林查干湖区水体TN浓度的变化,除了灌区农业面源污染、底质扰动、冰冻浓缩、生物作用等影响因素外,还受到松嫩平原区域及湖区生态系统演化的多种动态因素综合作用。研究发现入湖的灌区局部地下水质、区域土壤冻融作用(包括地下冻融活动层、水岸冻融边界、地表冻融汇流)、湖底表层含氮沉积物、松嫩平原第四系潜水(包括引松渠道的截流与汇流、"天窗效应"产生的水力通道和前置湖)、浮游生物生境的改变,都会影响TN的变化。据此提出保护引松渠道、进一步开辟和利用地质"天窗"、开发前置湖及建设生态排水渠"带状天窗"、控制湖内污染源并抚育生物、对重点湖区进行清淤等调控TN浓度的建议。The TN concentration diversification in the water of Lake Chagan in Jilin,besides the impact of the factors of irrigated agricultural non-point source pollution,sediment disturbance,frozen concentrate,biological action,there is a variety of dynamic factors of regional and Songnen Plain and Lake ecosystem evolution.The Study has shown that the following factors which can effect the TN variation,that is the local underground water in irrigation area into the lake,regional soil freeze-thaw action(including the active layer of ground freezing and thawing,freezing and thawing waterfront boundary,convergence of surface freezing and thawing),nitrogen sediments in the bed of the lake,Quaternary Songnen plain diving(including Yinsong channel closure and convergence,'skylight effect' from the water channel and front lake),plankton habitat changes.The suggestions are proposed about to protect Yinsong channels,and further open up and use of geological 'dormer',the development and construction of eco-drainage 'ribbon dormant' to control lake pollution and nurture life,dredging of the Lake District and other key regulatory TN concentration.

关 键 词：查干湖 总氮 特点 对策 

分 类 号：P342.2[天文地球—水文科学]