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Impacts of Landscapes on Water Quality in A Typical Headwater Catchment, Southeastern China

Author

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  • Kaiyan Zhao

    (Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Huawu Wu

    (Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China)

  • Wen Chen

    (Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China)

  • Wei Sun

    (Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China)

  • Haixia Zhang

    (Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Weili Duan

    (State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China)

  • Wenjun Chen

    (School of Software Engineering, Jinling Institute of Technology, 99 Hongjing Road, Nanjing 211169, China)

  • Bin He

    (Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-Environmental Science and Technology, Guangzhou 510650, China
    National Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China)

Abstract

The relationship between land landscape and water quality has been a hot topic, especially for researchers in headwater catchment, because of drinking water safety and ecological protection. In this study, Lita Watershed, a typical headwater catchment of Southeast China, was selected as the study area. During 2015 and 2016, water samples were collected from 18 sampling points every month, and 19 water quality parameters were tested such as nutrients and heavy metals. Through multistatistics analysis, the results show that the most sensitive water quality parameters are Cr, NO 3 , NO 2 , and COD. The type and scale of water body have direct effects on water quality, while the land-use patterns in the surrounding areas have an indirect impact on the concentration and migration of pollutants. This effect is sensitive to seasonal change because heavy metals are mainly from atmospheric deposition, but nutrients are mainly from agricultural nonpoint source pollution. According to the results, increasing the proportion of forest land and paddy field is effective to the reduction of water nutrients. Besides, balancing the configuration of water bodies, especially increasing the capacity of the pond, can significantly alleviate the water pollution in the dry season. This study is useful to provide policy suggestion for refined watershed management and water source planning basing on seasons and pollution sources.

Suggested Citation

  • Kaiyan Zhao & Huawu Wu & Wen Chen & Wei Sun & Haixia Zhang & Weili Duan & Wenjun Chen & Bin He, 2020. "Impacts of Landscapes on Water Quality in A Typical Headwater Catchment, Southeastern China," Sustainability, MDPI, vol. 12(2), pages 1-18, January.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:2:p:721-:d:310563
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    References listed on IDEAS

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    3. Demetris Zarris & Marianna Vlastara & Dionysia Panagoulia, 2011. "Sediment Delivery Assessment for a Transboundary Mediterranean Catchment: The Example of Nestos River Catchment," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 25(14), pages 3785-3803, November.
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    Cited by:

    1. Yu Song & Xiaodong Song & Guofan Shao, 2020. "Response of Water Quality to Landscape Patterns in an Urbanized Watershed in Hangzhou, China," Sustainability, MDPI, vol. 12(14), pages 1-17, July.
    2. Laima Česonienė & Daiva Šileikienė & Midona Dapkienė, 2021. "Influence of Anthropogenic Load in River Basins on River Water Status: A Case Study in Lithuania," Land, MDPI, vol. 10(12), pages 1-16, November.
    3. Ye Pan & Yuan Yuan & Ting Sun & Yuxin Wang & Yujing Xie & Zhengqiu Fan, 2020. "Are the Water Quality Improvement Measures of China’s South-to-North Water Diversion Project Effective? A Case Study of Xuzhou Section in the East Route," IJERPH, MDPI, vol. 17(17), pages 1-21, September.

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