银川市城市形态变迁与水系结构关联性研究

Research on the Correlation between Urban Morphological Changes and Hydrological Structure in Yinchuan City

银川市地处黄河上游,水资源是制约其发展的主要因素。为深入研究银川市城市形态变迁与境内水系结构关联性,本研究将1990—2020年银川市城市土地利用数据、城市建成区数据与银川市境内水系数据相结合,利用质心转移法、建成区等扇分析法及水系连通性评价指标体系,针对银川市城市形态与水系结构的关联性进行跨学科的统计分析与指标体系数据库建立。结果表明:银川市城市形态与其境内河流总长度、河网密度、支流发育系数具有一定程度的相关性,银川市城市发展建设依赖于城市水系结构的完善,水系连通性评价结合城市形态变化的研究能够为城市合理规划提供具体参考与着手方向,有利于提高水资源利用效率、平衡城市发展与资源制约,可为西北水资源短缺地区城市依赖水资源发展的现状提供参考与具体研究方向,最大程度利用有限资源,为城市发展建设提供便利。

Yinchuan City,situated in the upper reaches of the Yellow River,faces water scarcity as a primary limiting factor for its development.To gain a deeper understanding of the correlation between the urban morphological changes in Yinchuan City and its internal hydrological structure,this paper combines urban land use data from 1990 to 2020 with data on the urban built-up area and the hydrological system within Yinchuan City.It employs methodologies such as the centroid shift method,urban sector analysis,and an indicator system for evaluating hydrological connectivity.Through interdisciplinary statistical analysis and the establishment of an indicator database,the study investigates the interrelationship between Yinchuan City’s urban form and its hydrological structure.The results reveal a significant correlation between Yinchuan City’s urban morphology and factors such as the total length of rivers,river network density,and tributary development coefficient within its boundaries.The development and construction of Yinchuan City depend on the soundness of its urban hydrological structure.Evaluating hydrological connectivity in conjunction with the study of urban morphological changes can provide specific references and directions for urban planning.This approach is conducive to enhancing water resource utilization efficiency,balancing urban development with resource constraints.It can also serve as a valuable reference and specific research direction for addressing the challenges of urban development reliant on water resources in water-scarce regions in Northwest China,maximizing the utilization of limited resources,and facilitating urban development and construction.