三峡库区山区乡村功能多元化与坡耕地演变的耦合关系OA北大核心CHSSCDCSTPCD

Exploring the coupling relationship between the functional diversified development of mountainous countryside and the evolution of sloping farmland in the background of rapid urbanization and industrialization is of great significance for farmland protection in mountainous areas and the sustainable development of the countryside.In this paper,from the perspective of the human-land relationship,we constructed a measurement model of the coupling relationship between the multi-functional development of rural villages in mountainous areas and the evolution of sloping farmland.Taking Fengjie County in Three Gorges Reservoir Area as an example,we used the methods of rural function evaluation and coupling coordinateness modeling to reveal the coupling relationship and its driving mechanism.The results showed that:(1)all rural functions in Fengjie County presented a trend of development,in which the development of social security function was the most obvious.The composite index of rural functions was characterized by an increase in the north and south and a decrease in the middle,and the increase in the south was greater than that in the north.(2)The proportion of sloping farmland in Fengjie County showed a decreasing trend during the study period,and the decrease from 2000 to 2010 was significantly more than that from 2010 to 2020,with the least decrease in gentle sloping farmland and the most decrease in sharp steep sloping farmland.At the same time,the decrease in the southern part of the county was small,and the decrease in the northern part of the county was large.(3)The coupling coordination value between the diversified development of rural functions and the evolution of gentle sloping farmland showed a decreasing trend,while the coupling coordination value with steep sloping farmland and sharp steep sloping farmland showed a firstly decreasing and then increasing trend.According to the increase and decrease of the composite index of rural functions and the proportion of sloping farmland,the coupling response types were summarized into four types:sustainable,transitional,consistent,and declining.(4)Changes in the coupled pattern of rural functional diversification and sloping farmland evolution were mainly driven by natural,socio-economic,and policy factors.In the future,we should develop ecological agriculture and implement environmental management to improve the coordination between rural function development and the utilization of sloping farmland.The research methodology and findings of this paper can provide a reference value for the optimal utilization of sloping farmland resources,ecological protection,and sustainable rural development in other mountainous areas.