基于信息熵原理的区域用水结构时空演变特征研究

Analysis of Spatiotemporal Characteristics of Regional Water Utilization Structure Based on Information Entropy

用水结构是社会经济发展对水资源需求差异的集中体现。选取广东省1980~2015年用水数据,运用信息熵理论研究该区域用水结构时空演变特征,并采用重心模型进行验证。研究结果表明:(1)1980~2015年间,广东省用水结构信息熵总体呈上升趋势,用水系统的稳定性和均衡性增强;(2)用水结构空间演变呈现显著的区域性差异,用水结构信息熵重心逐步向珠三角地区转移。农业用水重心逐步向粤北地区转移,工业用水、生活用水和城镇公共用水重心逐步向珠三角地区转移。

Water utilization structure is a concentrated reflection of the demand difference in socioeconomic development on water resources. Based on the water consumption data of Guangdong Province during 1980-2015, this paper studied the spatiotemporal patterns of water utilization structure by information entropy and verified the results by gravity center model. The results show that:(1) The information entropy of water utilization structure in Guangdong Province shows an overall upward trend. The water use system tends to be more stable and balanced.(2) The evolution of water utilization in Guangdong Province shows significant regional differences, which reflects in the gravity center of information entropy gradually migrated toward the Pearl River Delta. In addition, the gravity center of industrial, domestic and urban public water use gradually migrate toward the Pearl River Delta region, while the gravity center of agricultural water utilization gradually migrate toward the north Guangdong.