Study on Temporal and Spatial Changes and Influencing Factors of Cultivated Land in Karst Mountainous Urban Agglomeration
To clarify the current situation and influencing factors of cultivated land in Karst Mountainous Urban Agglomeration under the background of urbanization,which is of great significance to promote regional sustainable development and ensure food security.Taking the core economic zone of the central Guizhou urban agglomeration as an example,based on the cultivated land data in 2010 and 2020,this paper uses the methods of change trajectory analysis,cultivated land index,spatial autocorrelation and geographical detector to explore the temporal and spatial evolution characteristics and driving factors of cultivated land in the karst mountainous urban agglomeration.The result show that on the whole,the distribution of cultivated land in the core economic zone of the central Guizhou urban agglomeration showed the characteristics of"low in central Guiyang and high in the surrounding areas";from the perspective of county,the distribution of cultivated land in the county during the study period is mainly 300‒500 km2.The cultivated land in the core economic zone of the central Guizhou urban agglomeration has the characteristics of both transfer out and transfer in,but the area of cultivated land transferred out is significantly greater than that transferred in,which reduces the cultivated land in the study area by 2 309.37 km2.The transfer in and transfer out of cultivated land in the core economic zone of Central Guizhou urban agglomeration have obvious spatial agglomeration characteristics,and are mainly high-high cluster.The main factor affecting the temporal and spatial distribution of cultivated land in the urban agglomeration of Central Guizhou is economic factors,but with the development of social economy,the influence degree of economic factors has decreased,and the influencing factors gradually tend to be diversified.In order to control the reduction of cultivated land in the central Guizhou urban agglomeration to the greatest extent,it is suggested that the land use should be reasonably planned while developing the economy to ensure the safety of cultivated land.
国家科技期刊平台
NSTL
万方数据
