流域景观格局对洪泽湖富营养化状态的影响研究  

Effects of Landscape Patterns of River Basin on Eutrophication of Hongze Lake

作　　者：俞蕴馨 马洪石 Yu Yunxin;Ma Hongshi(Huai’an Environmental Monitoring Center of Jiangsu Province,Huai'an 223001,China)

机构地区：[1]江苏省淮安环境监测中心,江苏淮安223001

出　　处：《环境科学与管理》2023年第11期46-50,56,共6页Environmental Science and Management

基　　金：江苏省环境监测科研基金(2206,2314)。

摘　　要：流域土地利用显著影响水质质量,而湖泊富营养化破坏水生态系统、威胁水体安全。文章基于SWAT模型划分洪泽湖上游自然流域边界,并利用洪泽湖水质数据及其上游淮河子流域土地利用数据,分析了洪泽湖富营养化分布特征及其与流域土地景观格局之间的关系。结果表明,淮河入湖口附近富营养化指数相对较高,流域内景观格局指数最大斑块指数LPI、面积加权分形指数FRAC-AM与湖泊富营养化指数呈显著相关关系,结合流域景观特征认为子流域水体景观面积降低以及人类日趋频繁开发活动是导致湖泊富营养化的重要因素,应加大对淮河干流水体的保护力度。Land use in river basin significantly affects water quality,and the eutrophication of lake destroys water ecosystem and threatens water safety.In this paper,the natural basin boundary in the upper reaches of Hongze Lake is calculated based on the SWAT model.The distribution characteristics of eutrophication in Hongze Lake is analyzed,and its correlation with the land landscape pattern in the basin is described by using the water quality parameters data of Hongze Lake and the land use data of the upper reaches of Huaihe River Basin.The results show that the eutrophication index of Lake Hongze nearby the Huaihe River is relatively high,and the landscape pattern indexes LPI and FRAC-AM in the basin are statistically correlated with the eutrophication index of the lake.Combined with the landscape characteristics of the basin,the decreasing water landscape area and the increasing human development activities in the basin are considered to be important factors leading to the eutrophication of the lake,and the protection of the main stream of Huaihe River should be enhanced.

关 键 词：淮河流域 景观格局 富营养化 洪泽湖 

分 类 号：X524[环境科学与工程—环境工程]