Exploring the spatial and temporal evolution characteristics of the border land use multifunctionality(LUMF)provides insights for taking advantage of border land use and optimizing border land use policies.Based on th...Exploring the spatial and temporal evolution characteristics of the border land use multifunctionality(LUMF)provides insights for taking advantage of border land use and optimizing border land use policies.Based on the improved Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS)mode,this study identifies and evaluates the LUMFs in the China-Vietnam border area between 2000 and 2018 from the perspectives of agricultural production,social security,ecological service,landscape recreation,and national security.The results show that:1)The comprehensive land use functions in most counties and cities continued to be improved.2)The comprehensive land use function exhibits remarkable spatial divergence and aggregation characteristics.The high-value area of the agricultural production function and social security function evolves from the east to the west.In addition,the spatial evolution of ecological service function is complicated,without an obvious spatial divergence and aggregation pattern.The landscape recreation function shows different spatial differentiation characteristics in the early and middle stage,and forms a large cluster in the later stage.Finally,the spatial evolution pattern of the national security function is significant.3)Designing differentiated border land policies,improving border land use security,and establishing a long-term mechanism for ecological protection and ecological compensation can aid in optimizing the LUMF level in the border area.展开更多
With the rapid development of urbanization and industrialization in China,the expansion of construction land and irrational utilization of cultivated land have led to issues such as cultivated land marginalization,ext...With the rapid development of urbanization and industrialization in China,the expansion of construction land and irrational utilization of cultivated land have led to issues such as cultivated land marginalization,extensive use,non-grain conversion,and non-agriculturalization.These issues are a major threat to sustainable agricultural development,but existing research suffers from limitations including failure to assess the multifunctionality of cultivated land(MCL)from the perspective of sustainable agricultural development.This study constructed an agricultural production function(APF)-social security function(SSF)-ecological maintenance function(EMF)-landscape aesthetic function(LAF)classification system.Using this comprehensive evaluation model,the MCL values for typical provinces in southwestern mountainous areas of China(Guizhou,Sichuan,and Yunnan)were calculated in detail,and their spatiotemporal evolutionary characteristics were explored.Concurrently,the Spearman rank correlation coefficient,geographically weighted regression(GWR)and redundancy model were used to deeply explore the relationships among cultivated land functions and their influencing factors.The results showed three important points.(1)Over the past two decades,the comprehensive values and four sub-functional values of cultivated land in southwestern mountainous areas have shown increasing trends in the order of SSF>EMF>LAF>APF.The values and rates of change of each sub-functional value show obvious spatial variation.However,the spatial gap in cultivated land functions has adverse effects on sustainable agricultural development.(2)There are clear correlations between each pair of the four major functions of cultivated land during the study period,and the number of results reaching significance among the six correlations between the four main cultivated land functions increased significantly from 2000 to 2020.Simultaneously,there are noticeable spatiotemporal differences in the trade-offs and synergies among the MCLs.(3)The development of MCL is most significantly influenced by socioeconomic factors such as the per capita net income of rural residents.Therefore,formulating reasonable land protection policies is imperative for promoting the sustainable development of agriculture.The results of this study can provide guidance for the rational layout and coordinated development of MCL space,for promoting sustainable agricultural development and ensuring food security.展开更多
基金Under the auspices of National Natural Science Project(No.42161046)National Social Science Project(No.21CJY075)+2 种基金Guangxi Natural Science Project(No.2021JJB150070)Guangxi Philosophy and Social Science Project(No.20FJY027)Guangxi First-class Discipline Applied Economics Construction Project Fund(Guangxi Education and Scientific Research(No.[2022]No.1))。
文摘Exploring the spatial and temporal evolution characteristics of the border land use multifunctionality(LUMF)provides insights for taking advantage of border land use and optimizing border land use policies.Based on the improved Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS)mode,this study identifies and evaluates the LUMFs in the China-Vietnam border area between 2000 and 2018 from the perspectives of agricultural production,social security,ecological service,landscape recreation,and national security.The results show that:1)The comprehensive land use functions in most counties and cities continued to be improved.2)The comprehensive land use function exhibits remarkable spatial divergence and aggregation characteristics.The high-value area of the agricultural production function and social security function evolves from the east to the west.In addition,the spatial evolution of ecological service function is complicated,without an obvious spatial divergence and aggregation pattern.The landscape recreation function shows different spatial differentiation characteristics in the early and middle stage,and forms a large cluster in the later stage.Finally,the spatial evolution pattern of the national security function is significant.3)Designing differentiated border land policies,improving border land use security,and establishing a long-term mechanism for ecological protection and ecological compensation can aid in optimizing the LUMF level in the border area.
基金The National Natural Science Foundation of China(41261018,72263032)The Key Project of Yunnan Province Applied Basic Research Program(202501AS070166)。
文摘With the rapid development of urbanization and industrialization in China,the expansion of construction land and irrational utilization of cultivated land have led to issues such as cultivated land marginalization,extensive use,non-grain conversion,and non-agriculturalization.These issues are a major threat to sustainable agricultural development,but existing research suffers from limitations including failure to assess the multifunctionality of cultivated land(MCL)from the perspective of sustainable agricultural development.This study constructed an agricultural production function(APF)-social security function(SSF)-ecological maintenance function(EMF)-landscape aesthetic function(LAF)classification system.Using this comprehensive evaluation model,the MCL values for typical provinces in southwestern mountainous areas of China(Guizhou,Sichuan,and Yunnan)were calculated in detail,and their spatiotemporal evolutionary characteristics were explored.Concurrently,the Spearman rank correlation coefficient,geographically weighted regression(GWR)and redundancy model were used to deeply explore the relationships among cultivated land functions and their influencing factors.The results showed three important points.(1)Over the past two decades,the comprehensive values and four sub-functional values of cultivated land in southwestern mountainous areas have shown increasing trends in the order of SSF>EMF>LAF>APF.The values and rates of change of each sub-functional value show obvious spatial variation.However,the spatial gap in cultivated land functions has adverse effects on sustainable agricultural development.(2)There are clear correlations between each pair of the four major functions of cultivated land during the study period,and the number of results reaching significance among the six correlations between the four main cultivated land functions increased significantly from 2000 to 2020.Simultaneously,there are noticeable spatiotemporal differences in the trade-offs and synergies among the MCLs.(3)The development of MCL is most significantly influenced by socioeconomic factors such as the per capita net income of rural residents.Therefore,formulating reasonable land protection policies is imperative for promoting the sustainable development of agriculture.The results of this study can provide guidance for the rational layout and coordinated development of MCL space,for promoting sustainable agricultural development and ensuring food security.
