【摘要】 从更精细的尺度分析城市用水的时空演变特征及其驱动因素，对于区域水资源的合理规划具有重要意义。基于夜间灯光数据，结合用水量数据建立了城市用水空间化模型，并利用标准差椭圆、空间自相关分析、地理探测器和因子分析方法，对长三角城市群城市用水的时空演变特征及驱动因素进行研究。结果表明：2000-2018年长三角城市群城市用水空间分布由“正东-正西”方向逐渐转变为“西北-东南”方向，重心整体向东南方向偏移；长三角城市群县域尺度用水量具有显著的空间正相关性，高值集聚区主要分布在中部地区，低值集聚区则分布在边缘地区；人口、综合供水能力、建成区面积与GDP反映的城市经济发展水平是长三角城市群城市用水时空演变的主导因素，价格、产业结构与节水措施则为重要因素。应注重长三角城市群内部城市协同发展，深化水价改革，优化产业结构与城市供水系统，改善居民用水行为，促进区域水资源的合理规划与可持续发展。更多还原

【Abstract】 It is of great significance for the rational planning of regional water resources to analyze the spatial-temporal evolution characteristics and driving factors of urban water consumption on a more detailed scale. Based on nighttime light data and water consumption data, we established a spatial model of urban water consumption, and studied the spatial-temporal evolution characteristics and driving factors of urban water consumption in the Yangtze River Delta Urban Agglomeration using standard deviation ellipse, spatial autocorrelation analysis, Geodetector and factor analysis methods. The results show that from 2000 to 2018, the spatial distribution of urban water consumption in the Yangtze River Delta Urban Agglomeration gradually changed from the “east-west” direction to “northwest-southeast” direction, and the center of gravity shifted to the southeast as a whole. The county scale water consumption of the Yangtze River Delta Urban Agglomeration showed a significant positive spatial correlation. The high-value clustered areas mainly distributed in the central region, whereas the low-value clustered areas scattered in the marginal region. The urban economic development level reflected by population, comprehensive water supply capacity, built-up area and GDP was the dominant factor in the spatial-temporal evolution of urban water consumption in the Yangtze River Delta Urban Agglomeration, and price, industrial structure and water conservation measures are important factors. The Yangtze River Delta Urban Agglomeration should focus on the coordinated development of internal cities, deepen water price reform, optimize the industrial structure and urban water supply system, improve residents’ water consumption behavior, as well as promote the rational planning and sustainable development of regional water resources.更多还原