基于两维图论的县域尺度耕地后备资源利用分区研究

耕地后备资源需在区域不同的资源条件与利用方向基础上,进行针对性的差异化保护与开发管理,以发挥资金投入的最佳效益,实现开发区域的协调发展。以黑龙江省为研究区,综合考虑耕地后备资源集聚条件、资源投入意愿和资源开发潜力,运用空间分析和两维图论算法进行县域尺度下耕地后备资源利用分区,确定不同的调控方向。分区结果表明:两维图论聚类法较好实现了耕地后备资源利用分区之间的独立性及分区内部一致性;将黑龙江省分为潜力开发、生态环境建设、重点开发、生态环境保护、开发利用管控和适度开发6个耕地后备资源利用类型区,针对不同利用类型实施差别化的保护与开发管理战略。

Utilization Zoning of Reserve Resources for Cultivated Land Based on Two- dimensional Graph Theory Clustering Method at County Scale

The reserve resources for cultivated land should be targeted to differentiated protection and development management on the basis of different resource conditions and utilization direction, so as to realize the best benefit of capital investment, and then achieve the ultimate goal of coordinated development in research area. Heilongjiang Province was the main grain production area and the most important agriculture province in China. Its grain production and agriculture had obvious advantages. Heilongjiang Province owned large area of reserve resources for cultivated land, which was the most important province in farmland supplement. Taking Heilongjiang Province as the research area, the conditions of resource reserve, resource investment and resource development potential were considered. The spatial analysis and two dimensional graph theory clustering method were used to study the land use zoning and determine the direction of regulation. The results showed that the two dimensional graph theory clustering method can achieve the goal of ensuring the independence of the reserve land use resources and the internal consistency of the zoning. Heilongjiang Province was divided into potential development zone, ecological environment construction zone, key development zone, ecological environment protection zone, development and utilization of control zone and the appropriate development zone, all the six partitions results were serving for the Heilongjiang Province reserve resources for cultivated land. And then different development management strategies were adopted for different zone types, and management strategy was formulated. The research can provide decision support for the development and utilization of reserve resources for cultivated land in Heilongjiang Province.