摘要:耕地是必不可少的自然资源, 耕地保护日益引起全球范围内的关注。耕地数量、质量和生态三位一体保护是一个层次化、系统化的概念, 代表了传统耕地保护在理论和技术方面向现代耕地保护转变的创新。本研究以辽宁中原地区为例, 采用空间自相关分析方法评价耕地三位一体的空间集聚特征, 运用空间叠加分析划分耕地三位一体保护区。结果表明, 耕地数量、质量、生态的空间集聚分布类型: 高-高型(面积占比分别为36.2%、24.2%、9.7%)、低-低型(面积占比分别为19.5%、12.6%、11.6%)、高-低型(面积占比分别为0.6%、1.2%、0.7%)、低-高型(面积占比分别为0.4%、0.4%、1.3%)和非显著型(面积占比分别为43.3%、61.4%、76.7%)具有明显的相关性。空间集聚度排序为: 耕地数量>耕地质量>耕地生态条件, 也反映了三位一体保护多样性的分布和利用特征。在此基础上, 通过对耕地数量、质量、生态的高型、低型和非显著型进行排列组合, 建立耕地三位一体保护分区, 最终划分为4个一级区和10个二级区。研究表明, 通过高标准农田和永久基本农田建设等土地整治工作和保护性耕作体系, 可以在耕地数量、质量、生态三位一体保护中最大限度提高耕地高型特征影响以及消除低型影响。
关键词:耕地资源/
三位一体保护/
空间集聚/
辽中平原区
Abstract:Farmland is an essential natural resource, and in recent times, farmland protection has become an issue of increasing global concern. Trinity protection of farmland quantity, quality, and ecological conditions (FQQEC) is a systematic hierarchical concept that encompasses the innovative application of theory and technology toward the transformation from traditional to modern farmland protection. In this empirical study, which focuses on the Central Plain of Liaoning, China, we sought to assess the spatial agglomeration of FQQEC by utilizing spatial autocorrelation analysis and dividing the farmland trinity protection zone based on spatial overlay analysis. The results revealed that the distribution of the spatial agglomeration of FQQEC showed distinct correlations of high-high (36.2%, 24.2%, and 9.7% of the total area for farmland quantity, quality, and ecological conditions, respectively), low-low (19.5%, 12.6%, and 11.6% coverage), high-low (0.6%, 1.2%, and 0.7% coverage), low-high (0.4%, 0.4%, and 1.3% coverage), and non-significant (43.3%, 61.4%, and 76.7% coverage) types, and the rank order of the degree of spatial agglomeration was farmland quantity > farmland quality > ecological conditions, which also represented the diverse distribution and utilization characteristics of FQQEC. On the basis of these findings, trinity protection zoning of farmland was established through different permutations and combinations of H-, L-, and non-significant types, and finally grouped into four primary and ten secondary categories. Collectively, our results indicate that wherever possible, it is essential to enhance the desirable impacts of the H type and eliminate the detrimental impacts of the L type in the FQQEC, based farmland consolidation, including the establishment of high-standard and permanent farmland, and adopting sustainable agricultural practices.
Key words:Farmland resource/
Trinity protection/
Spatial agglomeration/
Central Plain of Liaoning
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