洪泽湖湖西湿地根区氮磷与水体富营养化特征探究  

A Probe into the Characteristics of Nitrogen and Phosphorus in Root-zone and Eutrophication Level of Wetland in the Western Part of Hongze Lake

作　　者：沈汇超 周思聪 赵宇 何卿[1] SHEN Hui-chao;ZHOU Si-cong;ZHAO Yu(Jiangsu Provincial Key Laboratory of Environmental Engineering,Jiangsu Provincial Academy of Environmental Science,Nanjing,Jiangsu 210036;Jiangsu Provincial Academy of Environmental Science Co.,Ltd.,Nanjing,Jiangsu 210036)

机构地区：[1]江苏省环境工程重点实验室,江苏省环境科学研究院,江苏南京210036 [2]江苏省环科院环境科技有限责任公司,江苏南京210036

出　　处：《安徽农业科学》2020年第24期75-80,共6页Journal of Anhui Agricultural Sciences

基　　金：江苏省环境工程重点实验室开放课题(ZX2017008);国家水体污染控制与治理科技重大专项(2018ZX07208007)。

摘　　要：为了解洪泽湖湖西湿地枯水期环境状况,选取10个监测点,于2019年2月、3月和4月分别进行采样,利用数理统计和综合比较的方法对水生植物根区底泥氮、磷含量和水体富营养化指数进行空间分布特征研究,对底泥和上覆水中氮磷含量进行相关性分析研究。结果表明,根区底泥的N、P含量处于中等水平,且具有西低东高,北高南低的空间分布特征。整个湖区富营养化水平为中营养。洪泽湖湖西湿地的污染主要来源于外源负荷。To investigate the environmental condition of wetland in the western part of Hongze Lake during the dry period,samples from ten sites were collected and detected monthly from February to April in 2019.The spatial characteristics of nitrogen and phosphorus contents in plant root-zone and water eutrophication level were analyzed.The correlation of nitrogen and phosphorus contents in plant root-zone and in overlying water was explored.The results showed that the nitrogen and phosphorus contents were at a medium level,which were low in the west and south,and high in the east and north.The eutrophication has already reached to the middle classs,it might mainly comes from exogenous loadings.

关 键 词：根区 富营养化 空间分布特征 洪泽湖 

分 类 号：X52[环境科学与工程—环境工程]