河南省耕地“非农化”时空演变特征分析  

Analysis on Temporal and Spatial Evolution Characteristics of Farmland Conversion in Henan Province

作　　者：余庆年[1] 王虎威 YU Qingnian;WANG Huwei(School of Public Administration,Hohai university,Nanjing 211100,Jiangsu,China)

机构地区：[1]河海大学公共管理学院,江苏南京211100

出　　处：《国土资源科技管理》2024年第2期50-61,共12页Scientific and Technological Management of Land and Resources

摘　　要：深入理解和掌握耕地“非农化”的时空演变特征及其原因对保护耕地并确保粮食安全具有重要意义。本文针对中国产粮第二大省河南,以县域为单位,基于河南省1980—2020年土地利用长时序空间数据,采用重心转移模型和空间自相关分析等方法,定量揭示全省158个县级评价单元1980—2020年来耕地“非农化”的空间分布特征、时空迁移路径和集聚特征,以期为河南省耕地资源的保护与可持续利用提供依据。结果表明:(1)河南省耕地资源东西分布差异大,集中连片耕地主要集中在东部,耕地总面积随时间推移呈波动减少。(2)耕地“非农化”等级时空差异较大,豫西地区耕地“非农化”较为缓和,中部和东部地区呈先快速上升后缓慢下降的态势。(3)河南省耕地“非农化”空间不均衡性增强,空间格局小幅波动,耕地“非农化”重心以先向东南和西南后向东北的路径迁移。(4)河南省耕地“非农化”空间分布格局在4个时期均呈现出集聚特性,空间集聚程度先增大后减小,高—高和低—低聚类主导格局变化。本研究揭示了1980—2020年河南省耕地“非农化”的时空演变格局,为政府管控耕地“非农化”现象、实现耕地资源的可持续发展提供参考和借鉴。Understanding and mastering the characteristics and underlying reasons for the spatial-temporal evolution of cultivated land“non-agriculturalization”is of paramount importance to ensure food security.Based on the long-term spatial data of land use in Henan from 1980 to 2020,the second largest grain-producing province in China,this paper adopts the methods of gravity shift model and spatial autocorrelation analysis.To provide a solid foundation for the protection and sustainable use of cultivated land resources in Henan Province,this study quantitatively examines the spatial distribution patterns,temporal-spatial migration routes,and agglomeration characteristics of cultivated land“non-agriculturalization”across 158 county-level units from 1980 through to 2020.The results show that:(1)the distribution of cultivated land resources in Henan Province varies greatly from east to west.The contiguous cultivated land is mainly concentrated in the east,and the total cultivated land fluctuated and decreased over time.(2)There are large spatial and temporal differences in the“de-agriculturalization”level of cultivated land.The“de-agriculturalization”of cultivated land in western Henan is relatively gentle,while it first rises rapidly and then decreases slowly in the central and eastern regions.(3)The spatial imbalance of“non-agricultural conversion”of cultivated land in Henan Province has increased,the spatial pattern has fluctuated slightly,and the center of gravity of“non-agricultural conversion”of cultivated land moved first to the southeast and southwest and then to the northeast.(4)The spatial distribution pattern of“non-agriculturalization”of cultivated land in Henan Province has shown an agglomeration characteristic in four periods,with the degree of spatial agglomeration increasing first and then decreasing,and the dominant pattern changing to“high-high”and“low-low”clustering.This study reveals the spatio-temporal evolution pattern of the“non-agricultural conversion”of cultiva

关 键 词：耕地“非农化” 时空演变特征 重心模型 空间自相关 

分 类 号：F323.21[经济管理—产业经济]