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Changes in Water Environment in Erhai Lake and Its Influencing Factors

by 1, 2, 1,* and 2,*
State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China
Authors to whom correspondence should be addressed.
Academic Editors: Jean-Luc Probst, Richard C. Smardon and Jianzhong Lu
Water 2021, 13(10), 1362;
Received: 23 March 2021 / Revised: 10 May 2021 / Accepted: 11 May 2021 / Published: 14 May 2021
(This article belongs to the Special Issue Water and the Ecosphere in the Anthropocene)
In recent years, the rapid development of the population, agriculture, and tourism around Erhai Lake has caused increasing environmental problems, which have seriously affected the ecological status of the lake. This study analyzed changes in water volume and quality in Erhai Lake, based on statistical data from 2000 to 2019, combined with climate, land-use type, and socioeconomic data, as well as the influencing factors of water environmental changes in the Erhai Lake basin. The main conclusions include: the water storage of Erhai Lake increased by 3.8 × 106 m3 year−1, from 2000 to 2019. The monthly variation in water volume showed a trend of first decreasing and then increasing, in which it increased from August to December and decreased from January to July. The change in water volume was mainly affected by climate factors. From 2000 to 2019, the nitrogen concentration in Erhai Lake showed an increasing trend, and the changes in water quality were closely related to human activities. In the northern part of the basin, agricultural nonpoint source pollution was the main factor affecting water quality, while in the southern part of the basin, economic development, accelerated urbanization, and tourism were the main factors affecting water quality. View Full-Text
Keywords: climate; human activities; water environment; Erhai Lake climate; human activities; water environment; Erhai Lake
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MDPI and ACS Style

Zheng, L.; An, Z.; Chen, X.; Liu, H. Changes in Water Environment in Erhai Lake and Its Influencing Factors. Water 2021, 13, 1362.

AMA Style

Zheng L, An Z, Chen X, Liu H. Changes in Water Environment in Erhai Lake and Its Influencing Factors. Water. 2021; 13(10):1362.

Chicago/Turabian Style

Zheng, Liang, Zeyu An, Xiaoling Chen, and Hai Liu. 2021. "Changes in Water Environment in Erhai Lake and Its Influencing Factors" Water 13, no. 10: 1362.

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