Abstract
Physico-geographic regionalization need synthetically analyze multi-aspect factors such as hydrology,meteorology,geology,physiognomy and natural disasters. In the age of digital earth,the traditionally qualitative method on physico-geographic regionalization cannot meet the requirement of informatization with high degree,which need the quantitative analysis based on mass spatial data.So the powerful tools are required to integratedly manage,storage,display,analyze,and simulate the geographical and spatial data.Geographical Information System(GIS) is the best solution means,which is fully used in the study of the physico-geographic Regionalization of Gansu Provincial Highway.The applications mainly include spatial data acquisition and management and as a result a spatial database is constructed.Kinds of environmental parameters are calculated based on the spatial analysis functions,which is the key of quantitative analysis.The atlas is compiled based GIS and computer technologies.It is an explicit platform to exposit the research results.A thematic GIS with independent copyright is developed based on object-oriented visual program technology of VB and ComGIS technology of MapObjects.Spatial database,atlas and thematic GIS would promote the application of the research results of the highway's physico-geographic regionalization in Gansu Province.
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