区域物质流通虚拟网络研究——以金沙江流域中段为例

受各种地理环境要素的制约,地形复杂区域产品、能源、生产工具等物质的流通阻力较大,建立基于阻力最小的物质流通网,对于区域发展具有重要意义。以GIS软件为分析平台,选择地形复杂的金沙江流域中段为研究对象,选取地形、地貌、植被覆盖、土地利用类型等为物质流通阻力评价指标,采用专家打分及灰色关联等评价方法,建立区域内阻力最小的物质流通虚拟网络。在该网络的基础上,分析区域内各城市的物质流通性,探讨出建立地形复杂地区最佳物质流通虚拟网络的方法。物质流通虚拟网络可为区域内道路、管道、电网的最佳线路选址提供科学依据;城市间物质流通性分析结果可为区域规划提供参考。

Virtual Network for Regional Material Circulation: A Case Study on Jinsha River Basin (Middle Section)

This article focuses on the establishment of virtual network for regional material circulation.Constrained by a variety of geographical environment factors,circulation of materials in the region with complex terrain is not so easy,which include goods,energy,and production tools.Thus,it is of great importance for regional development to establish a material circulation network with the smallest resistance.Virtual network for regional material circulation utilizes the shortest path analysis function of Geographic Information System(GIS) to generate,display and simulate the path network for regional material circulation with the smallest resistance under the influences of various geographic environment factors.In this study,GIS software is utilized as the analysis platform,Jinsha River basin(middle section) with complex terrain is taken as the case study object,factors such as geomorphology,topography,vegetation coverage,and land use types are selected as the indexes to evaluate the resistance of material circulation.And expert evaluation and grey correlation analysis are employed as the evaluation methods to establish the virtual network for regional material circulation with smallest resistance in the region.In addition,the material circulation among the various cities in the region is further analyzed based on this network.Studies and discussions are conducted to find out the method for establishing the optimum virtual network for material circulation in the region with complex terrain.As a result,the virtual network for material circulation can be provided as a scientific basis for the optimum route selection of roads,pipelines,and power grids in the region,and the analysis result of material circulation among cities can be provided as a reference for regional planning.