地理信息系统支持的城市土地定级方法研究

本文探讨根据城市土地定级因素所具有的空间特征和相关性,采用地理信息系统(GIS)的技术和方法,运用空间数据库存贮、管理和操作各类与城市土地定级估价有关的信息和数据。并根据GIS空间分析的类型和功能,设计土地定级因素空间分析软件,包括空间内插、数字地形分析、空间扩散和叠置分析等,在这些定级软件的协调下,自动完成土地定级因素的量化、空间分析、分值计算、分级评定及土地定级图件等的输出,为城市土地等级评估提供一种全数字的方法。

A STUDY ON URBAN LAND RATING SUPPORTED BY CIS

Based on the spatial character of environmental variables and their relationship to land rating the authors have developed a automated method of urban land rating. The method first analyses the procedures of land rating in applying GIS, and then presents a set of spatial analysis models for the derivation of rating values. These models consisted essentially of spatial interpretation, digital terrain model, buffer and overlay analysis. The study revealed that the key technique of automated method is to establish a practical and efficient information system of urban land rating under the penetrating analysis of "Rules of Urban Land Rating" and the main steps of establishing this system are to manage the rating factors and design the analysis models.