基于洛伦兹曲线的甘肃省用水结构分析

辨析区域用水结构特征,对于优化区域水资源配置、社会经济与生态环境协同发展具有重要意义.利用洛伦兹曲线、基尼系数、洛伦兹不对称系数等方法,对甘肃省各区域近10 a来用水结构时空分布特征、均衡差异性、主要用水指标(万元GDP用水量、万元工业增加值用水量、人均综合用水量和净灌溉用水量)进行研究,并对研究结果进行定量分析.结果...

Analysis of Water Consumption Structure in Gansu Province Based on Lorentz Curve

Distinguishing the characteristics of regional water utilization structure is of great importance for optimizing the allocation of regional water resources and the coordinated development of social economy and ecological environment. The Lorentz curve, Gini coefficient, Lorentz asymmetry coefficient and other methods are used to quantitatively analyze the temporal and spatial distribution characteristics, equilibrium differences, and major water consumption indicators. The major water consumption indicators include 10 000 Yuan GDP water consumption, 10 000 Yuan industrial value-added water consumption, per capita comprehensive water consumption and net irrigation water consumption. Results unveil significant differences in the structure of water utilization in Gansu Province. The Gini coefficient of industrial water use, urban public water use, and domestic water consumption are all greater than 40%, exceeding the “warning line”. The ecological environmental water use and agricultural water use are relatively reasonably distributed; but have not yet reached the goal of “spatial balance” for water control. Industrial water use, urban public water use, and domestic water use are evidently unevenly distributed in spatial scale, and generally presents asymmetric characteristics dominated by areas with larger types of water consumption. The research results are basically consistent with the actual situation, which indicates that the research ideas and methods can be taken as reference for the optimization of regional water resources allocation and the analysis of water utilization.