Exploring the rules of cropland elevation uplift in China
作者机构:Hubei Key Laboratory of Regional Ecology and Environmental ChangeSchool of Geography and Information EngineeringChina Universityof GeosciencesWuhan430074China Department of Landscape Architecture and Urban PlanningTexas A&M UniversityCollege StationTX 77840USA
出 版 物:《Journal of Mountain Science》 (山地科学学报(英文))
年 卷 期:2023年第20卷第7期
页 面:1824-1841页
核心收录:
学科分类:12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 082802[工学-农业水土工程] 08[工学] 0828[工学-农业工程] 09[农学] 0903[农学-农业资源与环境] 120405[管理学-土地资源管理]
基 金:sponsored in part by the National Natural Science Foundation of China (Grant No.42001187) Scientific Research Project of Education Department of Hubei Province (No.B2022262)
主 题:Cropland Elevation uplift rules Multi-scale Elevation spectrum China
摘 要:Cropland elevation uplift(CLEU) has recently become a new challenge for agricultural modernization,food security,and sustainable cropland use in *** the rules of CLEU is of great theoretical and practical significance for China’s sustainable agricultural development and rural revitalization ***,existing studies lack in-depth disclosure of multi-scale CLEU evolution rules,making it difficult to support the formulation of specific cropland protection *** analyzed the spatio-temporal evolution and multiscale CLEU in China from 1980 to 2020 using the Lorenz curve,gravity center model,hotspot analysis,and cropland elevation *** results indicated that the center of gravity of cropland moved to the northeast from 1980 to 2000 and then shifted to the *** spatial distribution of cropland became increasingly imbalanced from 1980 to *** change hotspots clustered in the northwest and the northeast,whereas cold-spots were mainly in southeastern *** average elevation of cropland increased by 17.38 m,and the elevation uplift rule in different regions differed evidently across *** 1980 to 2000,all provinces except Xinjiang,Inner Mongolia,Gansu,and Yunnan exhibited CLEU,with Qinghai,Tibet,Beijing,and Guangdong showing the most noticeable *** CLEU can alleviate the shortage of cropland to some ***,without a planning constraint,the CLEU will lead to the increase of ecological risk and food security risk.