中文摘要：

土地质量上的管理是我国土地管理工作的重要方面，全面掌握和科学量化农用地的质量状况，能够为保护优质耕地、合理规划利用土地、实现土地数量质量双重管理提供科学依据。农用地分等工作是对农用地质量调查和评价的基础性工作，其成果包含了较为完备的土地质量信息和空间信息，是农用地质量定量化研究的数据基础。随着空间分析技术的不断发展，运用空间分析手段揭示空间位置之间隐含关系的应用越来越广泛，将农用地分等成果与空间统计分析相结合，能准确认识农用地质量在空间上的分布以及相互关系。基于海伦市农用地分等成果，对农用地质量的空间关联性进行分析评价，研究了海伦市农用地质量分布的空间集聚性特征，量化后与面积、质量属性相结合获得海伦市农用地各分等单元空间质量综合指数。评价结果表明，海伦市农用地质量呈现出明显的集聚现象，为基本农田保护区的划定、土地整理重点区域的划定以及建设用地的扩展方向提供了新思路。

英文摘要：

Management based on land quality is an important aspect of land administration in China, and this relies on complete and precise knowledge of agricultural land quality. Agricultural land classification, based on surveys and estimation of land quality, provides information on agricultural quality and spatial location. The relationship of agricultural land quality and spatial distribution can be described using spatial statistical analysis. We analyzed the land quality of 103 classification cells in Hailun City, Heilongiiang, using information on physical attributes and spatial statistical tools such as Moran＇s I to create an integrated agricultural land quality index. The resulting map of Hailun City showed a clear trend towards clustering of different levels of quality of agricultural land. agricultural protection. The central part got lower scores, so these areas should be designated as regions for consolidation of agricultural land. The northeast area had low scores and agricultural land there is highly fragmented, so we recommend that this area is utilized for other urban planning needs. As agricultural land quality is highly variable on the city＇s perimeter, Hailun City should preferentially develop towards the northeast and then the northwest in order to best preserve high-quality agricultural land.