Assessment of Water Resources Carrying Capacity of Yangtze River Basin and Its Driving Factors
More details
Hide details
Social Innovation Design Research Centre, Anhui University, Hefei 203106, China
College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
Submission date: 2023-06-08
Final revision date: 2023-06-27
Acceptance date: 2023-06-29
Online publication date: 2023-09-14
Publication date: 2023-10-25
Corresponding author
Yanlong Guo   

Social Innovation Design Research Centre, Anhui University, Hefei, China
Pol. J. Environ. Stud. 2023;32(6):5083–5094
The Yangtze River Basin (YRB) is an essential location for the development of eco-civilization in China, and the state of water environment in the watershed is still unsatisfactory at this stage. Therefore, 11 provinces (cities) of YRB were selected for the present study. The Water Resources Carrying Capacity (WRCC) indicator scheme is founded on the conceptual structure of Social-Economic-Natural Complex Ecosystem (SENCE), and 21 indicators in 3 aspects are con-structed. The entropy-weighted- TOPSIS method and grey relational analysis (GRA) were used to measure the WRCC of YRB from 2012 to 2021 and determine the driving factors. The results show that, first, there are large differences in WRCC levels in different regions, with an overall up-stream>midstream>downstream. The top three provinces (cities) in order are Szechwan (0.4721), Qinghai (0.4682) and Tibet (0.4655). Second, the trend of WRCC change is divided into three phases, fluctuating decline (2012-2015), recovery (2016-2018), and growth (2019-2021). Third, the subsystems of WRCC show stability, equilibrium, and variance, respectively. (4) The main drivers of WRCC are total fish production (0.8780), per capita daily domestic water consumption (0.8640), and total agricultural water consumption (0.8630).