洪湖外源性面源污染影响因素及其保护修复对策  

Effect of Exogenous Non-point Source Pollution on Honghu with the Corresponding Protection and Restoration Countermeasures

作　　者：庞任宏 朱永华[1] 吕海深[1] 陈亚宁[2] 

机构地区：[1]河海大学水文水资源学院,江苏南京210098 [2]中国科学院新疆生态与地理研究所荒漠与绿洲生态国家重点实验室,新疆乌鲁木齐830011

出　　处：《水电能源科学》2016年第12期56-59,124,共5页Water Resources and Power

基　　金：国家自然科学基金项目(41571015;41371049;2013CBA01806);国家自然科学基金重大项目(51190091);荒漠与绿洲生态国家重点实验室开放基金(2013547712);河海大学水利学科专业国家级实验教学示范中心资助的教改项目

摘　　要：鉴于面源污染是导致湖泊水质恶化的重要原因之一,研究其污染过程具有重要意义。采用2006~2015年四湖流域相关资料,研究其中部区域的外源性面源污染对洪湖的影响。先利用污染物输出系数法研究外源性总氮年际增长与水质之间的关系,结合农业生产规律分析各月总氮变化规律与主要污染源优势期,并给出对应保护与修复措施。结果表明,研究期内年际外源性总氮与洪湖水质之间并非正相关关系;洪湖春季水质最好,夏、冬季水质最差;春、夏季是种植业产氮的优势期,夏、秋季是水产产氮的优势期且春、夏季洪湖水质受入湖径流与总氮共同影响,由此提出以水资源调配为主、工程措施为辅的保护修复对策。Non-point source pollution is one of the important causes for the deterioration of water quality in lakes,and it has important significance for study of the pollution process.The data of Sihu basin from 2006 to 2015was used to research the impact of exogenous non-point source pollution in central region on Honghu Lake.Firstly,pollutant export coefficient method was adopted to analyze the relationship between the TN＇s annual growth with water quality.Combing with local agricultural production pattern,the variation of monthly TN and the main pollution sources was analyzed.And then the corresponding protection and restoration measures were put forward.Results show that the relationship between the TN＇s annual growth with water quality does not exhibit a positive correlation.Water quality of Honghu Lake in spring is the best,and it is the worst in summer and winter.Spring and summer are the advantages of planting produces TN and also are the advantages of aquatic produces TN.Honghu＇s water quality is influenced by inflow and TN＇s emissions in spring and summer.Therefore,the stress of protection and restoration countermeasures should be put on the regulation of water resources and supplemented by engineering.

关 键 词：洪湖 面源污染 总氮 保护与修复 

分 类 号：X524[环境科学与工程—环境工程]