The Research And Implement Of Urban Greenland Entironment Programming & Decision-making Support System

Along with urbanized advancement quickening, urban population increase, urban greenbelt has more and more vital role in improving the urban ecological environment and promoting the urban economy to develop continually. Urban greenbelt environment programming and decision-making support system can make quantitative analysis in urban existing greenbelt structure and function, open out the function of greenbelt system composition and distribution in urban environment system, synthesizes each target in reason by modeling method, appraises the urban greenbelt present situation by this, moreover can propose the regulation and the management countermeasure for urban overall greenbelt plan and urban each district virescence build. The primary coverage of this article is:(1) Introduce urban greenbelt development situation in domestic and foreign simply, at present urban greenbelt research in domestic although there are some, but urban greenbelt system molding are quite few; the successful urban greenbelt system in foreign is CityGreen in America. This system unifies the geographic information system and the computer technology, introduces the local evaluation and regional evaluation target of urban greenbelt, and provides the basis for the urban greenbelt construction.(2) The system includes three modules: base module, spatial database module and special analysis module. The base module provides spatial data display function, query function and so on. Spatial database module can maintain spatial data. The special analysis module is divided into the local evaluation and regional evaluation; the local evaluation can appraise greenbelt information in small scope. Evaluation target includes greenbelt structure appraisal, greenbelt ecology function appraisal and landscape ecology appraisal; Regional evaluation provides accessibility analysis, green space qualified rate analysis, temperature inquiry, green areas coverage rate inquiry function and so on.(3) Introduce some core question in detail such as development way of the system, the establishment of spatial database, the research establishment of model. The system uses GeoMedia to carry on the development by the way of definition application procedure; standardizes spatial data, establishes coordinate system, and introduces the spatial data matching method emphatically. The mostly used models of the system are traditional greenbelt appraisal target and greenbelt system appraisal target which takes landscape ecology as foundation.This article involves multi-disciplinary knowledge such as the computer science, the landscape ecology and 3S and so on. Establish urban greenbelt environment programming and decision-making support systems successfully, only replace the related spatial data, the system can be generalized to other cities easily, therefore the economic efficiency and the social efficiency are very big.