Research On Evaluation Of Land Resources Carrying Capacity In Xinjiang Uygur Autonomous Region

Land resources are the basic guarantee for human survival.In recent years,over-exploitation and utilization of land has made it face the most severe situation in history.The contradiction between man and land has become increasingly prominent,and various resource and ecological issues have come one after another.Therefore,under the guidance of the concept of sustainable development,the carrying capacity of land resources is studied.It is necessary.Based on the existing literature research and theoretical methods at home and abroad,this study combines Xinjiang land resources development and utilization status,with 85 Xinjiang counties and cities(excluding Alashankou City and Corps City)as research units,based on the DPSIR framework model.An index system was established,and a comprehensive evaluation was performed on the bearing capacity of land resources in Xinjiang using the range conversion method,the mean square error decision method,and the composite index method.The spatial and temporal changes were analyzed using the visualization function of ArcGIS 10.1,and the obstacle model was introduced to explore the land resources affecting Xinjiang.Bearing capacity factors.The results of the study are as follows:(1)In 2015,Xinjiang's land resources carrying capacity showed a pattern of high from north to south,and regional differences were obvious;the land resources carrying capacity index was found by systematic clustering and classification,bearing There is a large difference in force levels and a certain degree of geographical similarity.As far as each subsystem is concerned,the driving force index,pressure index,and impact index in northern Xinjiang are higher than in southern Xinjiang.The state index and response index in southern Xinjiang are greater than those in northern Xinjiang.The differences within each subsystem are obvious and the characteristics are prominent.(2)From 2006 to 2015,the carrying capacity of land resources in Xinjiang as a whole showed a rising trend.The largest increase was in Kuitun City.From the perspective of spatial differences,the land resources carrying capacity index in northern Xinjiang increased faster than in southern Xinjiang;From the point of view of spatial change,the level of land resources carrying capacity has increased at all levels,the distribution of bearing capacity in the relatively high-grade areas has expanded,and the distribution of bearing capacity in relatively low-grade areas has been shrinking.As far as each subsystem is concerned,the driving force index and the impact index show a declining trend,and the pressure index,state index and response index show an upward trend,and the space of each subsystem has changed significantly.(3)Land use per capita GDP,agricultural utilization rate of land resources,land use efficiency of agricultural land,and ratio of unused land area are the main obstacles that limit the carrying capacity of land resources in Xinjiang.Among them,the land utilization rate of agriculture is the bearing capacity of land resources in each county.The main obstacle factor;There are obvious regional differences in the main obstacles to the land resources bearing capacity of the counties in the north and the south;There are common and different obstacles to the land resources carrying capacity in the cities and counties in different cities.Finally,the countermeasures and suggestions to improve the carrying capacity of land resources in Xinjiang are put forward,and the future development of land carrying capacity is forecasted.