This paper reveals the spatiotemporal evolution characteristics of cultivated land multifunction and utilization efficiency,and analyzes the coupling and coordination relationship between multifunctionality and utilization efficiency of cultivated land to provide reference for cultivated land use and development.The evaluation indexes for multifunctionality and utilization efficiency of cultivated land were constructed,and the temporal and spatial evolution characteristics from 2012 to 2021 were analyzed by using the entropy weight method,Super-SBM model,coupling coordination model and other tools,and the coupling coordination degree of the two systems was analyzed.The results showed that:(1)From 2012 to 2021,the production function value of cultivated land showed a downward trend on the whole,the overall increase of social security function value was obvious,and the ecological security function showed a trend of first decreasing and then increasing.(2)There are significant spatial differences in cultivated land use efficiency,and the overall trend is increasing,and the cultivated land use efficiency of 35%of prefecture-level cities increases by more than 50%.From 2012 to 2021,the coupling coordination degree of cultivated land social security function and cultivated land use efficiency was the highest,followed by production function and ecological function.Conclusions:It is necessary to strictly control the permanent basic farmland protection line,enhance the policy of benefiting farmers,develop the multifunctionality of cultivated land according to local conditions,implement the regional differentiation strategy,and improve the utilization efficiency.
关键词
耕地多功能/耕地利用效率/时空演变/耦合协调
Key words
multifunctional cultivated land/cultivated land use efficiency/spatiotemporal evolution/coupling coordination
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