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Water Environment Quality Evaluation and Pollutant Source Analysis in Tuojiang River Basin, China

Author

Listed:
  • Kai Zhang

    (School of Chemistry and Environment, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Shunjie Wang

    (School of Chemistry and Environment, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Shuyu Liu

    (School of Chemistry and Environment, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Kunlun Liu

    (Xinjiang Energy Co., Ltd. of State Energy Group, Wulumuqi 830000, China)

  • Jiayu Yan

    (School of Chemistry and Environment, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Xuejia Li

    (School of Chemistry and Environment, China University of Mining and Technology (Beijing), Beijing 100083, China)

Abstract

A water environment quality evaluation and pollution source analysis can quantitatively examine the relationship among water pollution, resources, and the economy, and investigate the main factors affecting water quality. This paper took COD, NH 3 -N, and TP of the Tuojiang River as the research objects. The water environment quality evaluation and pollution source analysis of the Tuojiang River Basin were conducted based on the grey water footprint, decoupling theoretical model, and correlation analysis method. The results showed that grey water footprint decreased, and the water environment quality improved. Among the pollution sources of the grey water footprint, TP accounted for the highest proportion. Moreover, the economic development level and the water environment were generally in a state of high-quality coordination. Farmland and stock breeding pollution accounted for the largest proportion of agricultural pollution and were thus the main source of the grey water footprint. The results of Pearson’s correlation analysis indicated that the source of the pollutants were the imported pollution from the tributaries and agricultural pollution (especially stock breeding and farmland irrigation). These results showed that the quality of the water environment was improving, and the main factors affecting the water environment were stock breeding and farmland pollution in agriculture. This study presents a decision-making basis for strengthening the ecological barrier in the Yangtze River.

Suggested Citation

  • Kai Zhang & Shunjie Wang & Shuyu Liu & Kunlun Liu & Jiayu Yan & Xuejia Li, 2022. "Water Environment Quality Evaluation and Pollutant Source Analysis in Tuojiang River Basin, China," Sustainability, MDPI, vol. 14(15), pages 1-17, July.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:15:p:9219-:d:873380
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    References listed on IDEAS

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