Water environment carrying capacity assessment of Yangtze River Economic Belt using grey water footprint model | Zendy

Peigui Liu | Zendy; Xingyuan Yi | Zendy; Yuan Feng | Zendy; Manting Shang | Zendy; Zhenxin Bao | Zendy

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Water environment carrying capacity assessment of Yangtze River Economic Belt using grey water footprint model

Author(s) -

Peigui Liu,

Xingyuan Yi,

Yuan Feng,

Manting Shang,

Zhenxin Bao

Publication year - 2021

Publication title -

water science and technology water supply

Language(s) - English

Resource type - Journals

eISSN - 1607-0798

pISSN - 1606-9749

DOI - 10.2166/ws.2021.156

Subject(s) - footprint , carrying capacity , environmental science , yangtze river , water use , water resources , pollutant , water resource management , environmental engineering , geology , geography , china , paleontology , ecology , chemistry , archaeology , organic chemistry , biology

Based on grey water footprint theory and the characteristics of the water resources system, this paper constructs the evaluation index of the water environment carrying capacity of the Yangtze River Economic Belt, and calculates the point-source grey water footprint, non point-source grey water footprint, and water environment carrying capacity of the study area from 2012 to 2017. The results show that the non point-source grey water footprint is much larger than the point-source grey water footprint. The non point-source grey water footprint decreased from 1,089.75 billion m3 in 2014 to 1,038.7 billion m3 in 2017, indicating that the pollutants discharged into the water were decreasing in those four years. In addition, the water environment carrying capacity of the western and middle sections of the Yangtze River Economic Belt are in a good state, but the eastern section is overloaded.

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