Does County Urbanization Exacerbate Landscape Fragmentation of Cultivated Land:Based on an Empirical Analysis of 1 934 Counties in China
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.
landscape fragmentation of cultivated landcounty urbanizationtwo-way fixed effect modelheterogeneity analysis
NETL
NSTL
万方数据
