基于综合质量空间自相关性分析的耕地保护分区方法

从耕地的自然条件、利用情况和经济水平出发,结合耕地的空间属性,借助空间自相关性分析方法,提出了科学、合理的耕地保护分区方法。首先运用全局空间自相关的方法,探究高平市耕地质量在空间上整体的分布情况,以便进行下一步更细致的分析;再运用局部空间自相关的方法,以耕地质量指数为变量,探究高平市耕地质量的空间分布规律,最终基于综合质量的分析结果提出耕地保护分区方案。研究结果表明:整体分析显示,高平市耕地的自然条件、利用情况和经济水平皆表现出显著聚集性;局部分析得出,高平市耕地从自然条件、利用情况和经济水平3方面呈现出一定的规律性,HH(高-高)型和LL(低-低)型耕地表现为聚集分布;HL(高-低)型和LH(低-高)型耕地呈零星分布。最终从耕地的3方面分别进行局部分析,并依据3个局部分析结果组合,结合实际,提出耕地保护分区的方法及思路。

Protection Zoning of Cultivated Land Comprehensive Quality Based on Spatial Autocorrelation

A scientific and reasonable protection zoning scheme of cultivated land was given by using the spatial autocorrelation analysis method, which combined the natural condition, utilize situation and economic level with the spatial characteristics of cultivated land. Firstly, the global autocorrelation was used to explore the global distribution of cultivated land quality in Gaoping City for further analysis. Then the local autocorrelation was used to study the local distribution of cultivated land quality in Gaoping City, regarding the cultivated land quality index as vitiate. Finally, a protection scheme was formulated based on the analysis results of the comprehensive quality. The main results were as follows: firstly, the cultivated land quality which included the natural condition, utilize situation and economic level exhibited significant aggregation of global spatial distribution in Gaoping City. Besides, the local distribution of cultivated land quality showed a regular pattern, which contained the HH type (high-high) and LL type (low-low) emerged as the shape of cluster, while the HL type (high-low) and LH type (low-high) were barely sporadic distributed in Gaoping City. At last, kinds of protection zoning were put forward according to the combination of comprehensive cultivated land quality index based on local spatial autocorrelation and actual situation, which would provide a reference for cultivated land protection in Gaoping City.