上海市农用地分等及其形成机理研究

Research on agricultural land classification and its formation mechanisms in Shanghai

农用地等别的形成与地貌类型、光热气候、土壤类型、农田基础设施状况以及土地利用水平和效益水平有着密切联系,它们是形成农用地等别的自在因素,同时也是今后改善农用地质量首要考虑的因素。研究发现,上海市农用地自然质量基础较好,等别水平较高,等别集中度很高;利用水平差异显著,相比自然质量,等别趋向分散;而经济等等别则又趋向集中,差异化不显著。上海市农用地分等形成了自然质量、利用水平和经济效益等多方面的土地质量评价结果,这些是今后农用地质量管理的重要基础依据。本文系统总结了上海市农用地分等结果的特点,探寻了其形成机理,对今后上海市农用地分等成果的应用具有重要意义。

These are natural factors to form the agricuhttral land gradation, as well as the primary factor to improving farmland quality in future. The result shows that the agricultural land in Shanghai has the better foundation of the natural quality, and the natural quality difference of the agricultural land utilization decentralized compared with the natural quality gradation is in a high level with more concentration. The level is significant, and the usage of quality gradation is gradation, while the economic quality gradation is centralized with the insignificant difference. The evaluation result of agricultural land classification in including the natural quality gradation, usage of quality gradation and the economic quality Shanghai, gradation, are the important basis for the quality management of agricultural land in Shanghai in future. This paper summarizes the characteristics of the agricultural land classification systematically and studies the formation mechanism.