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Article

Spatial-Temporal Change of Land Use and Its Impact on Water Quality of East-Liao River Basin from 2000 to 2020

by 1,2,3, 1,2,3, 1,2,3, 1,2,3, 1,2,3,*, 1,2,3 and 1,2,3
1
School of Environment, Northeast Normal University, Changchun 130024, China
2
Department of Environment, Institute of Natural Disaster Research Northeast Normal University, Changchun 130024, China
3
Key Laboratory for Vegetation Ecology, Ministry of Education, Changchun 130024, China
*
Author to whom correspondence should be addressed.
Academic Editors: Roko Andricevic and David Post
Water 2021, 13(14), 1955; https://doi.org/10.3390/w13141955
Received: 13 May 2021 / Revised: 12 July 2021 / Accepted: 14 July 2021 / Published: 16 July 2021
(This article belongs to the Special Issue River Water Management and Water Quality)
Land use change is an important driving force factor affecting the river water environment and directly affecting water quality. To analyze the impact of land use change on water quality change, this study first analyzed the land use change index of the study area. Then, the study area was divided into three subzones based on surface runoff. The relationship between the characteristics of land use change and the water quality grade was obtained by grey correlation analysis. The results showed that the land use types changed significantly in the study area since 2000, and water body and forest land were the two land types with the most significant changes. The transfer rate is cultivated field > forest land > construction land > grassland > unused land > water body. The entropy value of land use information is represented as Area I > Area III > Area II. The shift range of gravity center is forest land > grassland > water body > unused land > construction land > cultivated field. There is a strong correlation between land use change index and water quality, which can be improved and managed by changing the land use type. It is necessary to establish ecological protection areas or functional areas in Area I, artificial lawns or plantations shall be built in the river around the water body to intercept pollutants from non-point source pollution in Area II, and scientific and rational farming in the lower reaches of rivers can reduce non-point source pollution caused by farming. View Full-Text
Keywords: land use change; transfer matrix; water quality; grey correlation degree land use change; transfer matrix; water quality; grey correlation degree
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MDPI and ACS Style

Zhang, M.; Rong, G.; Han, A.; Riao, D.; Liu, X.; Zhang, J.; Tong, Z. Spatial-Temporal Change of Land Use and Its Impact on Water Quality of East-Liao River Basin from 2000 to 2020. Water 2021, 13, 1955. https://doi.org/10.3390/w13141955

AMA Style

Zhang M, Rong G, Han A, Riao D, Liu X, Zhang J, Tong Z. Spatial-Temporal Change of Land Use and Its Impact on Water Quality of East-Liao River Basin from 2000 to 2020. Water. 2021; 13(14):1955. https://doi.org/10.3390/w13141955

Chicago/Turabian Style

Zhang, Mingxi, Guangzhi Rong, Aru Han, Dao Riao, Xingpeng Liu, Jiquan Zhang, and Zhijun Tong. 2021. "Spatial-Temporal Change of Land Use and Its Impact on Water Quality of East-Liao River Basin from 2000 to 2020" Water 13, no. 14: 1955. https://doi.org/10.3390/w13141955

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