Study on Urban Land Information System Based on GIS

Urban land utilization plays an important role in city development, We establish the "urban land information system based on GIS" in order to inspect urban land structure and utilize a model automatically, A series of codes abstracted from urban land sustainable utilization significance are used as measures in land inspection, GIS tools combined with "urban land information system" make visible codes calculations and statistical results possible, Useful mathematic methods are cited to analyze the degree urban land sustainable and optimize land structure. By scientific system analysis, relationships among modules and system structure are illustrated c1early. As a result this study has drawn out the "urban land information System" mode1.