2000-2020年中国建设用地扩张侵占耕地的时空特征及其与粮食产量的空间关系  

Spatio-temporal characteristics of farmland occupation of construction land expansion and its spatial relationship with grain yield in China for 2000-2020

作　　者：李资华 丁明军 谢坤 李静茹 陈利文 LI Zihua;DING Mingjun;XIE Kun;LI Jingru;CHEN Liwen(Territorial Spatial Survey and Planning Institute,Department of Natural Resources of Jiangxi Province,Nanchang 330025,China;Engineering Technology Innovation Center for Ecological Protection and Restoration of Land Space in the Great Lakes Basin,Ministry of Natural Resources,Nanchang 330025,China;School of Geography and Environment,Jiangxi Normal University,Nanchang 330028,China;Key Lab of Poyang Lake Wetland and Watershed Research of Ministry of Education and School of Geography and Environment,Jiangxi Normal University,Nanchang 330028,China;Yuzhang Normal University,Nanchang 330103,China;Nanjing Engineering Vocational College of Jiangsu Province,Nanjing 211135,China)

机构地区：[1]Territorial Spatial Survey and Planning Institute,Department of Natural Resources of Jiangxi Province,Nanchang 330025,China [2]Engineering Technology Innovation Center for Ecological Protection and Restoration of Land Space in the Great Lakes Basin,Ministry of Natural Resources,Nanchang 330025,China [3]School of Geography and Environment,Jiangxi Normal University,Nanchang 330028,China [4]Key Lab of Poyang Lake Wetland and Watershed Research of Ministry of Education and School of Geography and Environment,Jiangxi Normal University,Nanchang 330028,China [5]Yuzhang Normal University,Nanchang 330103,China [6]Nanjing Engineering Vocational College of Jiangsu Province,Nanjing 211135,China

出　　处：《Journal of Geographical Sciences》2024年第5期855-870,共16页地理学报（英文版）

基　　金：National Natural Science Foundation of China,No.42161021,No.41761020。

摘　　要：Construction land expansion is a key driver of urbanization and industrialization,yet it poses the risk of losing farmland and cascading impacts on food supply.The spatial char-acteristics of farmland occupied by construction land and its association with grain yield in China were unclear.We analyzed the characteristics of farmland converted into construction land,and its relationship with grain yield in China for 2000-2020.Construction land increased in area in central and western regions of China,and farmland decreased in area in south-eastern China.The expansion of construction land in the North China Plain,Northeast China Plain,and the Loess Plateau,occurred at the expense of farmland.Except the southeast coast of China,grain yield increase was only weakly dependent on farmland area.Patterns in which farmland was converted into construction land and grain-yield change were highly coupled in southeastern coastal China,Sichuan Basin,Shandong Peninsula,and the Hu Huanyong Line.It should be noted that expansion in construction land area does have some influence on grain production;ultimately it is greatly affected by yield per unitarea.

关 键 词：construction land expansion change in farmland grain yield temporal and spatial variation Chinese counties 

分 类 号：F323.211[经济管理—产业经济] F326.11