Construction of an evaluation index system of water resources bearing capacity: An empirical study in Xi'an, China

3rd International Conference on Water Resource and Environment

地球科学;生态环境科学

Qu, X.E.^1 ; Zhang, L.L.^1

Department of Economy and Financial, University of xi'An Jiaotong, 74# Yanta Xilu, Xi'an, Shaanxi

710061, China^1

关键词: Comprehensive evaluation;    Comprehensive evaluation index system;    Ecological environments;    Empirical studies;    Evaluation index system;    Industrial structures;    Population pressure;    Regional differences;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/82/1/012020/pdf
DOI  :  10.1088/1755-1315/82/1/012020

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, a comprehensive evaluation of the water resources bearing capacity of Xi'an is performed. By constructing a comprehensive evaluation index system of the water resources bearing capacity that included water resources, economy, society, and ecological environment, we empirically studied the dynamic change and regional differences of the water resources bearing capacities of Xi'an districts through the TOPSIS method (Technique for Order Preference by Similarity to an Ideal Solution). Results show that the water resources bearing capacity of Xi'an significantly increased over time, and the contributions of the subsystems from high to low are as follows: water resources subsystem, social subsystem, ecological subsystem, and economic subsystem. Furthermore, there are large differences between the water resources bearing capacities of the different districts in Xi'an. The water resources bearing capacities from high to low are urban areas, Huxian, Zhouzhi, Gaoling, and Lantian. Overall, the water resources bearing capacity of Xi'an is still at a the lower level, which is highly related to the scarcity of water resources, population pressure, insufficient water saving consciousness, irrational industrial structure, low water-use efficiency, and so on.