Research On Time And Space Variation And Drivers Of Land Resources Bearing Capacity In Xi'an

Land resources are the basic carrier and labor object of people's production and life,and are the most important strategic location for urban development and construction activities.The research on the carrying capacity of land resources is to measure the extent to which land resources can be developed and utilized under the conditions of sustainable development,and to judge the state of healthy development of land resources,and to provide suggestions and countermeasures for the sustainable development of land resources.Under the background of rapid urban development,Xi'an's land resources development and construction activities have continued to exert efforts,which has continuously increased the burden of land resources.This paper takes Xi'an as the research area,sorts out the related concepts,theories and development of land resource carrying capacity,and on the basis of this,refers to relevant research results,expounds the understanding of the concept of land resource carrying capacity;with the coordination of cultivated land and construction land The evaluation system of land resource carrying capacity in Xi'an is constructed from three perspectives of coordination and ecological land use coordination.According to the actual development of Xi'an,the land resource carrying capacity is classified according to relevant norms and standards.Entropy model and fuzzy mathematics The model and geo-detector model are the calculation model,combined with GIS as the spatial analysis function and the mapping function,to detect the spatial-temporal difference of the bearing capacity of Xi'an and the contribution degree of each driving factor;analyze the spatial-temporal characteristics and differences of land resource carrying capacity The contribution between sex and driving factors and their spatial and temporal differences.The research results show that from the time point of view,the pressure on land resources in Xi'an is moderate,the degree of coordination between land resources and related factors is not strong,resulting in low carrying capacity of land resources,and the overall level of medium carrying capacity,carrying capacity The index showed a small slow increase,and then a small slow decline,the overall fluctuation between 0.51-0.57.From the perspective of space,the ability of land resources in various districts and counties of Xi'an to carry human activities and support economic activities is at a moderate level of carrying capacity.Thedegree of coordination between land resources and various factors is slightly different in space,and its carrying capacity The overall situation is relatively balanced and the bearing pressure is moderate.From the perspective of driving factors,the contribution degree of driving factors to the carrying capacity of land resources,the contribution degree of driving factors in 2015 is generally lower than that in 2006 the interaction between driving factors is stronger,and the interaction relationship is mostly double.The driving factors are enhanced;the driving factors have strong distribution differences in space,and the main driving factors of the carrying capacity of each county also change with time.