江苏省域耕地后备资源潜力空间分布与开发组合研究

Spatial Distribution and Exploitation Combination of Potentiality of Cultivated Land Reserve Resources in Jiangsu Province

耕地后备资源的开发利用是补充耕地、确保耕地总量动态平衡与国家粮食安全的重要措施。本文在农用地分等成果基础上,采用GIS支持的空间图形分析和两维图论聚类等方法,对江苏省域耕地后备资源潜力空间分布与开发组合进行了研究,揭示该省耕地后备资源的质量潜力区域分异明显,其中农地整理类潜力苏北>苏中>苏南,而其他三类(农村建设用地整理、土地复垦、未利用地开发)则苏南>苏中>苏北;以县级行政区为单元,根据地域潜力相似性等建立了全省耕地后备资源的开发组合序列,为该省耕地后备资源的合理开发利用尤其是优先开发区域的确定提供了科学依据。

The development and utilization of cultivated land reserve resources is important measure to compensate the lost arable land and maintain the dynamic balance of total cultivated land area and food security. We studied the spatial distribution of potentiality and exploitation combination sequence of cultivated land resources of Jiangsu Province by the methods of spatial graphic analysis supported by GIS and the two dimensional graph theory-clustering on the base of results of the agricultural land classification. The results showed the differences of quality potentiality of cultivated land reserve resources in different regions were distinct by evaluating the distribution of potentiality of cultivated land reserve resources in Jiangsu Province. It showed that low yield farmland reserve resources was in an order of northern region〉central region〉southern region, while the other three types, i.e., rural construction land, land reclamation, unutilized land exploitation, in an order of southern region〉central region〉northern region. Based on the county-level administrative units, we also established the exploitation combination sequences of cultivated land reserve resources for the whole province according to geographical potential similarity, it could provide the scientific basis for the proper development and utilization of cultivated land reserve resources, especially for the prior developing regions.