摘要
研究目的:探究县域城镇化对耕地景观细碎化的影响效应及异质性特征,以期为快速城镇化背景下耕地景观细碎化治理提供有益借鉴。研究方法:GIS空间分析法,双向固定效应模型。研究结果:(1)2000—2020年,我国县域城镇化和耕地景观细碎化水平均呈现提升态势,但两者的冷热点集聚区表现出相反的空间分布特征。(2)县域城镇化的推进会加剧耕地景观细碎化问题,城镇化水平每提升1%,耕地景观细碎化水平提升0.046%,在人口、土地、经济视角下影响效应存在分异特征,土地城镇化的影响效应最大,其次为人口城镇化,经济城镇化的影响效应不显著。(3)不同经济分区和粮食功能分区的县域城镇化对耕地景观细碎化的影响具有分异特征。表现为东部、西部和粮食主销区的县域城镇化对耕地景观细碎化有正向影响效应,而中部和粮食主产区则呈现出负向影响效应。研究结论:应重视快速城镇化进程中耕地景观细碎化问题的异质性特征,差异化推进治理策略,加快破解城乡资源单向流通壁垒,促进土地流转和农田整治以纾解耕地景观细碎化难题。
The purpose of this study is to explore the effects and heterogeneity of county urbanization on landscape fragmentation of cultivated land,to provide references for the management of landscape fragmentation of cultivated land in the context of rapid urbanization.The research methods include GIS spatial analysis and two-way fixed effect model.The results show that:1)from 2000 to 2020,both county urbanization and landscape fragmentation of cultivated land in China showed an upward trend,the cold-hot spot catchment areas of which showed opposite spatial distribution characteristics.2)The promotion of county urbanization exacerbates the landscape fragmentation of cultivated land,for every 1%increase in the level of county urbanization,the level of landscape fragmentation of cultivated land increases by 0.046%.From the population,land and economic perspectives,the impact effect is differentiated,with the largest effect exerted by land urbanization,followed by population urbanization.Economic urbanization exerts a non-significant effect.3)The effects of county urbanization on landscape fragmentation of cultivated land in different economic zones and grain functional zones are characterized by differentiation.County urbanization in the eastern,western and main grain marketing areas has a positive effect on landscape fragmentation of cultivated land,while the central and main grain production areas show a negative effect.In conclusion,heterogeneous characteristics of landscape fragmentation of cultivated land in the process of rapid urbanization deserve more attention.Differentiated management strategies should be adopted to accelerate the breaking of one-way transfer barriers between urban and rural resources,and to promote land transfers and farmland improvement to alleviate the landscape fragmentation of cultivated land.
作者
王兴邦
黄晶
张正峰
WANG Xingbang;HUANG Jing;ZHANG Zhengfeng(School of Public Administration and Policy,Renmin University of China,Beijing 100872,China)
出处
《中国土地科学》
CSSCI
CSCD
北大核心
2024年第6期88-98,共11页
China Land Science
基金
中央高校基础研究基金和中国人民大学研究基金项目(22XNL006)。
关键词
耕地景观细碎化
县域城镇化
双向固定效应模型
异质性分析
landscape fragmentation of cultivated land
county urbanization
two-way fixed effect model
heterogeneity analysis
