Spatial distribution,migration path and agglomeration characteristics of'Non-Food'cultivated land in Yunnan province
[Objective]Exploring the changes in the spatial pattern and the central shift trends as well as the migration paths of'non-food'cultivated land which will provide scientific basis and auxiliary decision-making for the protection and sustainable development of arable land resources in Yunnan province.[Method]Based on the spatial data of land use in Yunnan province from 1980 to 2020,the spatial distribution data of'non-food'cultivated land in the past 40 years was obtained by using ArcGIS spatial analysis tools and the spatial distribution,migra-tion path and agglomeration characteristics of'non-food'cultivated land in Yunnan province in recent 40 years were analyzed by using the speed model,barycenter model,standard difference ellipse model.[Result]Over the past 40 years,although the'non-food'cultivated land in Yunnan province had been developing unevenly,the degree of non-equilibrium had been on the decline,and the most serious'non-food'cul-tivated land had been mainly concentrated in the urban agglomeration of central Yunnan province.Since 1980,the rate of'non-food'culti-vated land'degradation'in Kunming,Chuxiong and Yuxi was faster than that in other areas of central Yunnan and municipal districts.The spatial migration path of the center of gravity of'non-food'cultivated land was in the shape of'flag',which was first turned to the south-west,then to the southeast,and finally to the north.The spatial agglomeration of'non-food'cultivated land in Yunnan province showed a de-creasing trend in general,with low-low clusters mainly concentrated in the southwest,north and a few areas in the south,while high-high clus-ters were mainly distributed in the northeast,south-west and south;meanwhile,the changes of high-high and low-low clusters dominate the changes of'non-food'cultivated land in Yunnan province.At the same time,high-high and low-low clustering had became the main develop-ment trends in the evolution of spatial characteristics of cultivated land'non-food'conversion.[Conclusion]Yunnan is relatively short of cul-tivated land resources,and the spatial and temporal pattern of'non-food'cultivated land exists to varying degrees,with uneven distribution of spatial and temporal transfer paths,and the spatiotemporal agglomeration of'non-food'cultivated land is prominent.
Non-agriculturalization of cultivated landSpace distributionMigration pathSpatial autocorrelationYunnan province
万方数据
维普
