Causes,differentiation mechanism and regulation of farmland abandonment in villages of Nanchuan district,Chongqing
Farmland abandonment is a common practical problem in rapid urbanization and rural transformation.Scientifically revealing the causes and differentiation mechanism of farmland abandonment at village scale in typical areas has direct and practical significance for village policies to control farmland abandonment,and has far-reaching strategic significance for ensuring food security and promoting rural revitalization.Based on the regional system theory of human-land relationship,this paper takes Nanchuan district of Chongqing,a typical county-level unit in the mountainous areas of Southwest China,as an example,uses multiple linear regression and natural breakpoint model,identifies the leading factors of farmland abandonment at village scale,summarizes the spatial distribution characteristics,explores the dynamic mechanism of different types of farmland abandonment,and puts forward concrete control countermeasures.The results show that:(1)Farmland abandonment is the imbalance of human-land relationship in rural regional system,and the new balance of such a relationship in rural regional system can be achieved by implementing scientific measures.(2)Typical county farmland abandonment can be divided into four types:facility abandonment＞facility abandonment＞disaster abandonment＞circulation abandonment.(3)The total arable land abandoned showed a"river"-shaped corridor distribution with a clockwise rotation of 45°,and the middle-high values were observed in the high-altitude mountainous areas in the northwest and southeast parts of the county.The dominant factors were irrigation conditions,the proportion of cultivated land circulation,the distance to main roads,the proportion of emigrated population,the distance to rivers,the altitude,the amount of arable land per capita,the proportion of rural labor force,and the distance to the township.There are differences in the dominant factors and spatial distribution characteristics of farmland abandonment in different types.(4)Based on the causes,spatial characteristics,and actual situation of different types of cultivated land abandonment,four types are identified:facility shortage constraint type,disaster-prone damage type,farmer differentiation and relocation type,and policy guarantee imbalance type.Corresponding control strategies and 12 control models for cultivated land abandonment,including facility construction and upgrading,are proposed.
arable land was abandoneddifferentiation mechanismhuman-land relationship regional systemvillage scaleNanchuan district,Chongqing municipality
万方数据
维普
