珠江区用水量及用水结构时空演变分析  

Spatio-Temporal Evolution of Water Consumption and Water Utilization Structure in Pearl River District

作　　者：薛娇 刘喜燕[1] 许征[1] 韩亚鑫 XUE Jiao;LIU Xiyan;XU Zheng;HAN Yaxin(China Water Resources Pearl River Planning Surveying&Designing Co.,Ltd.,Guangzhou 510610,China;Pearl River Water Resources Commission of the Ministry of Water Resources,Guangzhou 510611,China)

机构地区：[1]中水珠江规划勘测设计有限公司,广东广州510610 [2]水利部珠江水利委员会,广东广州510611

出　　处：《人民珠江》2024年第11期87-96,共10页Pearl River

基　　金：科技基础资源调查专项资助项目(2019FY101900)。

摘　　要：用水量和用水结构时空演变特性研究对水资源统一管理和水资源优化配置具有重要意义。在收集1980—2019年用水量数据基础上,引入信息熵模型和重心模型,分析珠江区用水量及用水结构的时空演变特性。研究结果表明:珠江区用水量先增长后略有降低,用水量重心先东移后西移;农业用水量大幅降低,用水量重心西移,其余分项用水量总体呈增长趋势,用水量重心东移,这与珠江区经济社会发展趋势一致。珠江区用水结构变化以2010年为界分为2个阶段:第一阶段用水结构信息熵和均衡度大幅上升,用水结构信息熵重心逐步东移,东部分区用水结构变化较西部大;第二阶段用水结构信息熵和均衡度基本趋于稳定,用水结构信息熵重心略有西移,用水结构基本稳定,西部区域用水结构变化较东部大。在人口、GDP、工业增加值和农田实灌面积中,人口和农田实灌面积是用水量和用水结构变化的主要驱动因素。研究结果有助于提高对珠江区近40 a用水量和用水结构变化的总体把握,并为水资源统一管理和优化配置提供技术支撑。Research on spatio-temporal evolution characteristics of water consumption and water utilization structure is significant to integrated management and optimal allocation of water resources.Based on the water consumption data from 1980 to 2019,the spatiotemporal evolution characteristics of water consumption and water utilization structure in Pearl River District were studied by introducing the information entropy and gravity center models.The results show that the water consumption in the Pearl River District increases first and then decreases slightly.The gravity center of water consumption moves first to the east and then to the west.The agricultural water consumption is greatly reduced,and the gravity center moves to the west.Water consumption of other parts increases overall,and the gravity centers move to the east.These variations are consistent with the economic and social development in the Pearl River District.The variations of water utilization structure in the Pearl River District can be divided into two stages,before 2010 and after 2010.In the first stage,the information entropy and equilibrium of water utilization structure increase significantly.The information entropy gravity center of the water utilization structure moves eastward gradually.The variation of water utilization structure in the eastern region is greater than that in the western region.In the second stage,the information entropy and equilibrium of the water utilization structure tend to be stable.The information entropy gravity center of the water utilization structure moves to the west slightly.The water utilization structure is stable.The change in water utilization structure in the western region is larger than that in the eastern region.In terms of population,GDP,industrial added value,and actual irrigated area of farmland,population and actual irrigated area of farmland are the main driving factors for water consumption and water utilization structure changes.The results are helpful to overall understand the variations of water co

关 键 词：用水量 用水结构 信息熵 重心 时空演变 珠江区 

分 类 号：TV21[水利工程—水文学及水资源]