基于耕地质量指数局部空间自相关的耕地保护分区  

Protection zoning of arable land quality index based on local spatial autocorrelation

作　　者：韦仕川[1] 熊昌盛[2] 栾乔林[1] 胡月明[3] 

机构地区：[1]海南大学政治与公共管理学院,海口570228 [2]浙江大学公共管理学院,杭州310000 [3]华南农业大学信息学院,广州510642

出　　处：《农业工程学报》2014年第18期249-256,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金项目(71103053);海南省自然科学基金项目(414193)

摘　　要：科学合理地制定耕地保护分区,是实现耕地差异化保护、精细化管理的重要保障。该文采用Moran散点图和局部空间自相关分析相结合的方法,以耕地质量指数为空间变量,探讨广宁县耕地质量的空间结构性特征和聚集性规律,并据此提出耕地保护分区方案。研究结果表明:广宁县耕地质量在空间分布上呈现出一定的聚集性规律,正相关类型(高-高和低-低型)多以"组团"形式出现,聚集性较强;负相关类型(高-低和低-高型)无明显集中区域,零星分布。基于局部空间自相关分析的耕地保护分区,既综合考虑了耕地自然条件、利用条件和经济条件,同时将耕地质量的空间属性作为第4维,纳入到耕地保护分区研究中,为耕地差异化保护、精细化管理提供了思路。最后,提出了基于局部空间自相关的耕地保护分区方案及相应的保护措施,可为研究区域耕地保护分区提供参考。Protecting arable land is to protect the foundation of development and ensure the food safety in China. To formulate a scientific and reasonable protection scheme is an important guarantee for arable land under the tendency of hierarchical and fine management. Taking Guangning county of Guangdong Province as an example, the paper conducted a study on the protection zoning of arable land. The actual study process and content were based on the quality evaluation of arable land, and combined the Moran scatter plot and local spatial autocorrelation analysis together to explore the spatial structural characteristics and agglomerate regulation of arable land quality by taking the arable land quality index as the spatial variable and taking the administrative village as the spatial unit. On the basis of it, we put forward the protection zoning of arable land. The main results of the study were as follow Firstly, the arable land quality exhibited an agglomerate regulation to some extent in spatial distribution in Guangning county. From the point view of natural quality of arable land, the eastern of county was higher than the western, while the high quality arable land which mostly gathered at the central and western of county was higher than the northern and eastern of county from the point view of use quality and economic quality of arable land. Besides that, the positive spatial autocorrelation of arable land quality which contained the High-High type and the Low-Low type emerged as the shape of cluster and had a powerful agglomeration, while the negative spatial autocorrelation which included the High-Low type and Low-High type barely had a concentrate region, and most of them distributed dispersedly with barely outstanding regular pattern. Secondly, different kinds of protection zoning scheme were put forwarded based on the local spatial autocorrelation analysis of arable land quality indexes. According to the spatial agglomerate characteristics of natural quality of arable land, the protection zone of arable land w

关 键 词：土地利用 区划 等级 耕地质量指数 局部空间自相关 耕地保护分区 空间尺度 广宁县 

分 类 号：F301.21[经济管理—产业经济]