论文部分内容阅读
南昌市地处长江中下游平原,水系密布,水资源丰富.城市河流作为生态和景观的重要因素,能否方便快捷的为城市居民服务,是城市可持续发展的重要指标.本文通过综述国内外已有各领域可达性研究,介绍可达性研究方法,同时尝试将可达性分析应用于城市河流,以南昌市城区为研究对象,运用Arc GIS空间分析中的最短距离方法,将南昌市城区网格化,分别针对南昌城区主要河流(赣江、抚河)以及南昌城区整体河流,计算每个网格点到河流的欧式距离,以最短距离为指标对各个网格的河流空间可达性进行分级,并按照行政区划,分析比较评价各个区域在空间上到达河流水域的便利程度.
Nanchang is located in the middle and lower reaches of the Yangtze River Plain, with dense water system and abundant water resources.As an important factor of ecology and landscape, the urban river can serve the urban residents conveniently and quickly, which is an important indicator of urban sustainable development.Through the review of domestic and foreign At present, we have introduced the reachability research methods in various fields and tried to apply the reachability analysis to urban rivers. Taking Nanchang as an example, using the shortest distance method in Arc GIS spatial analysis, The urban area is gridded. For the main rivers in Nanchang city (Gan River and Fuhe River) and the whole river in Nanchang City, the Euclidean distance between each grid point and the river is calculated. The shortest distance is taken as an index to reach the river space in each grid According to the administrative divisions, we analyzed and compared the convenience of each region in reaching the river waters spatially.