郑州市用水结构演变及驱动力分析

Evolution and Driving Force Analysis of Water Use Structure in Zhengzhou City

探明城市用水结构演变规律是加强城市用水保障的基础。基于郑州市各县市2003~2019年用水资料,利用信息熵、洛伦茨曲线和基尼系数探究郑州市用水结构演变规律,基于灰色关联度分析不同城镇化水平阶段影响郑州市用水结构演变的主要驱动因素及其变化。结果表明,郑州市用水结构比例趋于稳定状态;目前生活用水地区分布高度平均,农业用水地区分布差距悬殊且存在进一步增加的趋势,工业用水地区分布差异性略有增加,生态用水地区分布有向公平度较高方向演变的趋势;以工业为主的影响因素已成为现阶段对用水结构演变较为重要的驱动因子。

Exploring the evolution law of urban water use structure is the basis of strengthening urban water security. Based on the water use data of counties and cities in Zhengzhou from 2003 to 2019, the evolution law of water use structure in Zhengzhou was explored by using information entropy, Lorenz curve and Gini coefficient. Based on the grey correlation analysis, the main driving factors and changes affecting the evolution of water use structure in Zhengzhou at different urbanization levels were analyzed. The results show that the proportion of water use structure in Zhengzhou tends to be stable. At present, the regional distribution of domestic water is highly average, the regional distribution gap of agricultural water is wide, and there is a trend of further increase, the regional distribution difference of industrial water increases slightly, and the regional distribution of ecological water tends to evolve in the direction of higher fairness. The influencing factors dominated by industry have become an important driving factor for the evolution of water use structure at this stage.