The abandonment of cultivated land in southern China was gradually obvious.This research aims to provide a reference for solving the abandonment of cultivated land in hilly regions and promote rural development in Chi...The abandonment of cultivated land in southern China was gradually obvious.This research aims to provide a reference for solving the abandonment of cultivated land in hilly regions and promote rural development in China.We examined Longnan county located in the hilly regions of southern China as an example,where abandoned cultivated land is very common.We analyzed its land use data with a field survey to identify the abandoned cultivated land and geospatial characteristics.From the two aspects of social and natural factors,we analyzed the factors driving cultivated land abandonment with the help of Geodetector.The results showed that in 2019,the total area of the abandoned cultivated land in Longnan county was 4,962.35 hm^(2),covering 39.51% of this region.Among the topographic factors,the abandonment rate is positively correlated with elevation and slope gradient,but not with slope direction.Among the land parcel conditions,the abandonment rate is positively correlated with the access to road network and cultivation distance from settlement.At the county level,the abandonment of cultivated land in study area was affected by multiple factors,among which,the direct factor was the reduction in the labor force,such as the decrease of farming laborers and the increase of female population,which made farming unsustainable.Changes in production factors also promoted transformations in farmers’motivation to engage in production,such as the decrease of grain crops and the increase of cash crops,which was the indirect factor affecting cultivated land abandonment.The development of the rural nonagricultural industry affected farmers’enthusiasm,such as the decrease of farming households,which was the fundamental factor leading to cultivated land abandonment in this area.展开更多
Using bibliometric methods,this paper analyzes the total amount and keyword composition among 910 studies in the field of farmland abandonment published in the Web of Science database from 1992 to 2019.According to th...Using bibliometric methods,this paper analyzes the total amount and keyword composition among 910 studies in the field of farmland abandonment published in the Web of Science database from 1992 to 2019.According to the usage of keywords,existing studies are reviewed from the three aspects of monitoring and mapping,driving forces and influencing factors,and effects assessment and trade-off.The results show that:(1)At present,the extraction and mapping of abandoned farmland data mainly rely on household surveys and remote sensing technology,and combing NDVI time series with spatial information can provide abandoned farmland data with high precision.(2)The driving forces and influencing factors of cultivated land abandonment have been summarized in terms of extent,sources and attributes,respectively.Cultivated land marginalization is the fundamental driving force of cultivated land abandonment,labor migration is the direct driving force,and changes in socio-economic factors are the main driving forces.(3)The environmental effects of cultivated land abandonment are spatially heterogeneous,and temporal-spatial differences,the landscape environment,climate,cultivation and topographic features will all play decisive roles in shaping the ultimate environmental effects.Studies of trade-offs between the impacts of cultivated land abandonment mainly focus on ecosystem service function and value,while the role of spatial background is often ignored.Based on a systematic review of existing literature,this paper suggests that future efforts should carry out large-scale investigations on abandoned cultivated land at the national level,conduct multi-scale research on the driving forces of land abandonment,and conduct trade-off research on the effects of land abandonment based on national conditions.展开更多
基金supported by the University Humanities and Social Sciences Project of Jiangxi Province(Grant No.JC20108 and GL20225)the National Natural Science Foundation of China(Grant No.42267068)。
文摘The abandonment of cultivated land in southern China was gradually obvious.This research aims to provide a reference for solving the abandonment of cultivated land in hilly regions and promote rural development in China.We examined Longnan county located in the hilly regions of southern China as an example,where abandoned cultivated land is very common.We analyzed its land use data with a field survey to identify the abandoned cultivated land and geospatial characteristics.From the two aspects of social and natural factors,we analyzed the factors driving cultivated land abandonment with the help of Geodetector.The results showed that in 2019,the total area of the abandoned cultivated land in Longnan county was 4,962.35 hm^(2),covering 39.51% of this region.Among the topographic factors,the abandonment rate is positively correlated with elevation and slope gradient,but not with slope direction.Among the land parcel conditions,the abandonment rate is positively correlated with the access to road network and cultivation distance from settlement.At the county level,the abandonment of cultivated land in study area was affected by multiple factors,among which,the direct factor was the reduction in the labor force,such as the decrease of farming laborers and the increase of female population,which made farming unsustainable.Changes in production factors also promoted transformations in farmers’motivation to engage in production,such as the decrease of grain crops and the increase of cash crops,which was the indirect factor affecting cultivated land abandonment.The development of the rural nonagricultural industry affected farmers’enthusiasm,such as the decrease of farming households,which was the fundamental factor leading to cultivated land abandonment in this area.
基金The Research Project of Humanities and Social Sciences in Jiangxi Province(GL19111)The Key Project of Jiangxi Natural Science Foundation(20202ACB203004)The Science and Technology Project of Education Department in Jiangxi Province(GJJ200531)。
文摘Using bibliometric methods,this paper analyzes the total amount and keyword composition among 910 studies in the field of farmland abandonment published in the Web of Science database from 1992 to 2019.According to the usage of keywords,existing studies are reviewed from the three aspects of monitoring and mapping,driving forces and influencing factors,and effects assessment and trade-off.The results show that:(1)At present,the extraction and mapping of abandoned farmland data mainly rely on household surveys and remote sensing technology,and combing NDVI time series with spatial information can provide abandoned farmland data with high precision.(2)The driving forces and influencing factors of cultivated land abandonment have been summarized in terms of extent,sources and attributes,respectively.Cultivated land marginalization is the fundamental driving force of cultivated land abandonment,labor migration is the direct driving force,and changes in socio-economic factors are the main driving forces.(3)The environmental effects of cultivated land abandonment are spatially heterogeneous,and temporal-spatial differences,the landscape environment,climate,cultivation and topographic features will all play decisive roles in shaping the ultimate environmental effects.Studies of trade-offs between the impacts of cultivated land abandonment mainly focus on ecosystem service function and value,while the role of spatial background is often ignored.Based on a systematic review of existing literature,this paper suggests that future efforts should carry out large-scale investigations on abandoned cultivated land at the national level,conduct multi-scale research on the driving forces of land abandonment,and conduct trade-off research on the effects of land abandonment based on national conditions.