【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。更多还原

【Abstract】 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.更多还原