耕地适宜性评价及其在新增其他用地配置中的应用

针对城市边缘带建设用地快速增长与农用地大量减少的矛盾，构建了土地自然生产潜力评价系统和土地发展压力评价系统两大部分组成的土地适宜性评价方法体系，并以北京市平谷区王辛庄镇为例，评价了城市边缘带土地的自然生产潜力和发展压力，划分了9大耕地适宜性分区，探讨其评价结果在新增建设用地时空配置中的应用途径和方法。结果表明：王辛庄镇60%以上的土地都具有较强的耕地适宜性，约50%的土地都承载着较大的发展压力，不同的规划目标导向下具有不同的新增建设用地配置时空顺序。该适宜性评价方法为城市边缘带新增建设用地的配置提供了明晰的数据基础。

Cultivated land suitability evaluation and its application to other increased land allocation

Aimed at the problem of build-up land sprawling out into agricultural land in urban fringe,a cultivated land suitability evaluation system was designed,which was composed of land capability evaluation system and land development pressure assessment system.Taking Wangxinzhuang town of Pinggu District in Beijing as an example,land capability and land development pressure was evaluated and nine types of synthetically suitability subarea were obtained.The ways of application of spatial and temporal allocation of new build-up land were(explored).Results show that about 60% land in study area has high cultivated land suitability and 50% land bears high development pressure.There are different spatial and temporal allocations of new build-up land under different planning objectives.This method provides powerful information support for the new build-up land allocation in urban fringe.