Taking 25 county-level administrative units of Dongting Lake Eco-economic Zone as the research area and based on the "trinity" of quantity, quality and ecology, this study constructs the performance evaluation index system of cultivated land protection,and ana...MORE Taking 25 county-level administrative units of Dongting Lake Eco-economic Zone as the research area and based on the "trinity" of quantity, quality and ecology, this study constructs the performance evaluation index system of cultivated land protection,and analyzes the temporal cha...