EKC Relationship Between Urban Expansion and Farmland Loss in Jingzhou City and Its Influencing Factors
[Objective]Taking Jingzhou City as an example,this paper discussed the relationship between urban expansion and farmland loss and its impact on economic growth.[Method]Using a 30-meter annual land cover dataset in China,the spatial and temporal patterns and re-gional differences of urban expansion and farmland loss during 1990-2019 were analyzed. The environmental Kuznets curve ( EKC) hypothesis was introduced to test the relationship between urban expansion and economic growth through regression analysis of provincial panel data,and the future urban land expansion (FULE) dataset was used to predict farmland pressure under future scenarios.[Result]Urban expansion was the main cause of farmland loss,accounting for 76％ of newly built urban land and 28％ of farmland loss. Cities above the county level were more inclined to use farmland for construction,while cities below the county level had more farmland converted to other uses. There was an in-verted U-shaped relationship between urban expansion and farmland loss,indicating that the loss of farmland increased first and then decreased with economic growth,and began to decouple after reaching an inflection point in 2012. Some coastal and large cities had entered a stage of re-duced farmland loss,while some inland and small and medium-sized cities were still in a stage of increased farmland loss.It was estimated that by 2050,0.3-0.4 million hectares of arable land in Jingzhou will be occupied by urban land,and third-and fourth-tier cities will suffer the most losses.[Conclusion]It was recommended to strengthen land planning and management,control urban expansion,optimize land use structure,improve land use efficiency,protect arable land resources,promote regional coordinated development,and achieve a balance be-tween economy and environment.
Urban expansionFarmland lossEnvironmental Kuznets curve(EKC)Jingzhou City
万方数据
维普
