In order to achieve a more scientific assessment of the water environment in the basin, a more comprehensive assessment method of gray water footprint in the basin is proposed based on the water footprint theory, to solve the problems of incomplete pollution accounting and inconsistent parameter selection principles in the previous assessment of gray water footprint in the basin. This study analyzes the gray water footprint and spatial characteristics of the river basin in 2018 from four pollution source: industry, resident life, livestock breeding and planting in the Fuzhou River Basin, and evaluates the water environment of the basin. The results show that the gray water footprint of the Fuzhou River Basin in 2018 was 2.923 billion m3, of which the industrial gray water footprint was 0.027 billion m3, the residents' pollution gray water footprint was 0.631 billion m3, the livestock breeding gray water footprint is 1.303 billion m3, and the gray water footprint of the planting industry was 0.962 billion m3. In 2018, the water pollution level of Fuzhou River Basin was 846.35%, which indicated that the surface water and pollution capacity in the basin had been completely exhausted and could not absorb the amount of pollutants produced in the purification basin every year. The results of the study quantify the gray water footprint of the basin and evaluate the current status of the water environment in the basin, which can provide a reference for the water environment management of the Fuzhou River Basin and other basin water environment assessments.
Key words
Fuzhou River Basin /
gray water footprint /
water pollution level /
water environment assessment
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