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

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外文摘要：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 unit area.

外文关键词：

construction land expansionchange in farmlandgrain yieldtemporal and spatial variationChinese counties

作者：

LI Zihua、DING Mingjun、XIE Kun、LI Jingru、CHEN Liwen

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作者单位：

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 Geog-raphy and Environment,Jiangxi Normal University,Nanchang 330028,China

Yuzhang Normal University,Nanchang 330103,China

Nanjing Engineering Vocational College of Jiangsu Province,Nanjing 211135,China

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基金：

国家自然科学基金国家自然科学基金

项目编号：

4216102141761020

出版年：

2024

DOI：

10.1007/s11442-024-2230-2

地理学报(英文版)