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Xiao, Peiqing
- Correlation Analysis Between the Water Quality and Land Use Composition in Chaobai River Basin
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Affiliations
1 Yellow River Institute of Hydraulic Research, Key Laboratory of the Loess Plateau Soil Erosion and Water Loss Process and Control of Ministry of Water Resources, Zhengzhou, Henan, 450003, CN
2 Zhengzhou Institute of Agriculture and Forestry Science, Zhengzhou, Henan, 450003, CN
1 Yellow River Institute of Hydraulic Research, Key Laboratory of the Loess Plateau Soil Erosion and Water Loss Process and Control of Ministry of Water Resources, Zhengzhou, Henan, 450003, CN
2 Zhengzhou Institute of Agriculture and Forestry Science, Zhengzhou, Henan, 450003, CN
Source
Nature Environment and Pollution Technology, Vol 16, No 1 (2017), Pagination: 307-314Abstract
Under the influence of global climate change and intense human activities, the world is facing water issue and crisis in varying extent. It is considered to be strategically important to study the relation between land-use change and water environment of the only surface water source of Beijing (a city facing severe water shortage). In this article, the quantitative relation between land-use structure and water environment quality of Chaobai River Basin was discussed. GIS spatial analysis function and Markov transition matrix were used to calculate the composition and changes of land use. Meanwhile the correlation between land-use structure and water quality index was analysed by means of correlation analysis, redundancy analysis (RDA) and other mathematical statistics. The land-use impact on water quality was also investigated. The result indicated that the main means of land use in Chaobai River Basin were forest land, farmland, construction land and waters. The major shifted land during 1995 and 2005 was farmland while during 2005 and 2015 was forest land. The indexes of water quality were deeply influenced by the means of land use, of which the deterioration of water quality was significantly affected by construction land. Water quality could be drastically improved by the spatial distribution of forest land, which was especially sensitive to ammonia and potassium permanganate index. The correlation between farmland area variation and water quality was not remarkable. RDA proved the effect of the land-use forms on water environment of Chao River and Bai River in different years. The results could be used to provide a scientific basis for the land optimization and water pollution control of Chaobai River Basin, as well as guide the policy decision of space development and water environment protection of Chaobai River Basin.Keywords
Water Quality, Land Use, Correlation Analysis, Redundancy Analysis, Chaobai River Basin.References
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