基于重要农地保护LESA（Land Evaluation and Site Assessment）体系思想的高标准基本农田建设研究

The high-standard prime farmland construction is an important measures to promote food capacity on the background of land reclamation, The quality and site conditions are the basic condtions of the high-standard prime farmland construction,which is an important guarantee the high-standard prime farmland permanent and stable . Aimed at the construction requirements with concentration, fully supported facilities and friendly environment, mixing theory of farmland classification, coordination degree and landscape ecology, it constructived farmland evaluation system based on the natrual factors,and carried out the farmland evaluation,it also constructived the site assessment system based on the external pressure conditions,and carried out farmland site assessment.On this basis, it constructed the synthesis system of farmland quality evaluation and site environment assessment, and it discussed the theory mechanism and technique from the aspect of land quality and site environment synthetically, which guarantee the high-standard prime farmland has stable natural quality and site environment of well coordinating with economic society development and specific landscape value, and the research would provide theoretical basis and technical support for standard and condition of the high-standard prime farmland construction.

建设高标准基本农田是在土地整治战略背景下有效提升粮食产能的重要举措，耕地质量条件和耕地立地环境条件是高标准基本农田建设的基础条件，是高标准基本农田永久稳定的重要保障。本研究针对高标准基本农田建设中集中连片、设施配套、生态良好等要求，以美国重要农地保护的LESA体系思想为指导，融合农用地分等理论、协调度理论及景观生态学理论，以耕地自然因素条件为基础构建耕地质量评价体系，开展耕地质量评价，以外界压力等立地环境因素为基础，构建耕地立地条件评价体系，开展耕地立地条件评价，在此基础上构建耕地质量与立地条件综合评价体系，在耕地质量和耕地立地环境条件两个层面综合探讨高标准基本农田建设的理论机制与技术方法，保障高标准基本农田既具有稳定的自然质量，又具有协调的立地环境条件，为构建高标准基本农田建设标准和条件提供理论依据和技术支撑。