首页|SPATIOTEMPORAL VARIATION OF WATER QUALITY AND ALGAL BIOMASS IN ERHAI LAKE AND ITS ENVIRONMENTAL MANAGEMENT IMPLICATIONS
SPATIOTEMPORAL VARIATION OF WATER QUALITY AND ALGAL BIOMASS IN ERHAI LAKE AND ITS ENVIRONMENTAL MANAGEMENT IMPLICATIONS
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维普
Elucidating the spatiotemporal pattern of water quality and algal biomass is crucial for accurately tracing pollution sources and reducing the risk of algal blooms in lake systems.This study analyzed the spatiotemporal variability of water quality and algal biomass in Erhai Lake from 1994 to 2021 using water quality index(WQI),Mann-Kendall test and Sen's slope combined methods.The potential causes of water quality deterioration and algal biomass dynamics were also elucidated.The results showed that the historical changes in the water environment of Erhai Lake mainly had three stages:satisfactory(1994-2001),deteriorating(2002-2010)and improving(2011-2021).The changes in water quality and algal biomass were primarily affected by total nitrogen,total phosphorus and chemical oxygen demand in different stages.The water environment of Erhai Lake is currently improving significantly,starting in the southern area that is furthest from the sources of agricultural pollution,especially in summer and autumn.This is attributed to the implementation of control measures resulting in lower pollutant loads at particular times and places.Therefore,it is necessary to continue to promote standardized livestock farming,to strengthen rural wastewater collection and to investigate measures such as the interruption of the endogenous cycle.
Guangdong-Hong Kong Joint Laboratory for Water Security,Center of Water Research,Beijing Normal University at Zhuhai,Zhuhai 519087,China
Engineering Research Center of Ministry of Education on Groundwater Pollution Control and Remediation,College of Water Sciences,Beijing Normal University,Beijing 100875,China
National Engineering Laboratory for Lake Pollution Control and Ecological Restoration,Chinese Research Academy of Environmental Sciences,Beijing 100012,China
Yunnan Key Laboratory of Pollution Process and Management of Plateau Lake Watershed,Kunming 650034,China
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Major Science and Technology Special Plan of Yunnan Province国家自然科学基金Yunnan Key Laboratory of Pollution Process and Management of Plateau Lake-Watershed
NETL
NSTL
万方数据
维普
