细碎化视角下不同地貌区耕地数量、质量与生态三位一体保护路径研究

科学构建耕地数量、质量与生态三位一体保护新格局，是新时期开展耕地保护的战略需求。耕地三位一体保护理念推动了耕地保护理论的完善与发展。本研究以探索耕地细碎化与耕地三位一体保护系统要素（数量、质量及生态）协调匹配的理论、模式与路径为主线，以平原、山地及丘陵不同地貌区为研究对象，以10km×10km网格为评价单元，以1985-2020年为时间序列，系统分析35年间不同地貌区耕地细碎化与耕地数量、质量及生态特征时空分异规律，构建耕地三位一体保护的空间基础数据平台，在此基础上，分析和揭示不同地貌区耕地细碎化与耕地三位一体保护系统要素间权衡与协同的空间集聚演变特征、耦合格局及耦合机制，提出细碎化视角下不同地貌区耕地数量、质量及生态三位一体保护的优化调控路径。研究结果可为我国实施耕地数量、质量和生态三位一体保护战略提供理论和方法借鉴。

Construction a new pattern of cultivated land quantity, quality and ecological trinity protection is the strategic demand of cultivated land protection in the new period. The concept of cultivated land trinity protection can promote the improvement and development of cultivated land protection theory. In this study, focusing on the main research idea of theory, model and path between the fragmentation and the trinity protection system of cultivated land, taking plain, mountainous and hilly of different geomorphic areas as research areas, it will analyze the rules of spatial and temporal evolution differentiation of fragmentation, quantity, quality and ecological characteristics of cultivated land in different geomorphic areas in the past 35 years based on 10km×10km from the period of 1985 to 2020, and construct the spatial basic database of cultivated land trinity protection. On this basis, it will analyze spatial agglomeration pattern and evolution characteristics, identify the interaction strength and coupling coordination degree and coupling mechanism between cultivated land fragmentation and trinity protection system by Moran's index method and coupling coordination degree model. In the last, it will construct the optimal technological measure of cultivated land trinity protection system based on cultivated land fragmentation in different geomorphic areas. The research results can provide theoretical and methodological guidance for cultivated land trinity protection in China.