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本文以重庆市为研究区,通过县级耕地后备资源调查评价的技术路线和方法,分析了全市耕地后备资源分布状况及其限制性因素,并提出了对耕地后备资源开发利用的思路和建议。研究结果表明:1全市耕地后备资源主要为其他草地;2全市耕地后备资源主要集中分布在渝东北生态涵养发展区和渝东南生态保护区,该区域占全市耕地后备资源总面积的72.16%;3地形坡度指标对全市耕地后备资源的宜耕性影响最大,其次为土层厚度和母质条件、生态条件等。
Based on the technical route and method of investigation and appraisal of cultivated land reserve in county level, this paper analyzes the distribution of cultivated land reserve resources and its restrictive factors in the city and puts forward the ideas and suggestions for the development and utilization of cultivated land reserve resources. The results showed that: (1) Reserve resources of arable land in the whole city are mainly other grassland; (2) Cultivated land reserve resources of the whole city are mainly concentrated in the ecological conservation area of Chongqing and the ecological protection area of southeast Chongqing, accounting for 72.16% of the total cultivated land reserve in the city; The topographic slope index has the greatest influence on the tillage ability of cultivated land reserve resources in the city, followed by the thickness of the soil layer, parent material and ecological conditions.