基于GIS的城市建设用地资源潜力评价初探

Potential Resource Evaluation of Urban Construction Land Based on GIS

在系统分析建设用地资源评价内涵和总体思路基础上,阐述了建设用地资源评价指标体系的构建与常用的评价方法。以北京市某区的规划数据为例,利用"筛选与潜力评价相结合"方法完成了可利用建设用地资源潜力评价实验和方法验证过程,发现利用模型和规则库自动资源评价的结果与人工评价结果基本一致,可参与可利用建设用地资源评价过程。同时,该研究在理论构建的基础上,开发了可利用建设用地资源评价系统,通过用户输入指标,构建针对具体对象的评价体系,可对不同尺度的区域进行可利用建设用地资源评价。研究发现,城市可利用建设用地资源潜力自动评价的结果对数据精度与现势性要求较高,只有保障了空间数据质量,可利用建设用地资源潜力评价的准确性和可持续性才能得到根本保证。

Based on systematic analysis for content and general mind of resource evaluation of construction land, the normal evaluation methods of resource evaluation of construction land are described deeply. Taking advantage of method named ＂the combination of filter and potential evaluation＂, the potential evaluation experiment and methods verification process of usable con- struction land resource are finished, taking the planning data of one district of Beijing as an example. The result of evaluation indicates that automatic evaluation results based on model and rule-base are consistent with the result of manual evaluation to join the evaluation processing of available construction land. At the same time, a resource evaluation system of available construction land is developed. In this system, the indices are input through users, the evaluation system for specific objects is building to achieve resource evaluation in area of different scales. Research indicated that automatic evaluation results of urban available construction land depend on the data accuracy and real-time data. Therefore, the accuracy and sustainability of potential evaluation of available construction land resource could be guaranteed only by guaranteeing the quality of spatial data.