Research On Evaluation And Early Warning Of Resource And Environmental Carrying Capacity In Gansu Province

The growth of population and the development of urbanization have increased the demand for resources security and environmental carrying capacity.Therefore,it is of great significance to study the resources and environmental carrying capacity for grasping the actual situation of resources and environment in an all-round way and promoting the rational allocation of resources and environment,the construction of ecological civilization and regional sustainable development.This study takes Gansu Province as the research object,analyzing the status of natural resources and ecological environment in the study area,to grasp the basic information of resources and environment in Gansu Province;the monitoring and early warning index system of the RECC is constructed,and the warning threshold of each individual monitoring and early warning index is divided;the comprehensive index model based on entropy weight method is used to evaluate and early-warn the resources and environmental carrying capacity;according to the obstacle model,the restrictive factors of the RECC in Gansu Province are analyzed,and the countermeasures to improve the RECC in various regions are put forward in view of the existing problems.Through the above research,the following conclusions are drawn:(1)The overall level of the RECC in Gansu Province shows an upward trend from 2006 to 2016,but all of them are in the state of overload warning.The level of RECC in 2006-2015 is orange overload warning level,and in 2016 is yellow critical overload warning level.(2)According to the spatial distribution characteristics,the RECC in southeastern Longdong is better than that in Zhangye City,Jiuquan City,Lanzhou City and Dingxi City in the Hexi Corridor in the past ten years;the RECC in minornty areas is quite different,Linxia State is worse,while Gannan State is higher.(3)Water resources and environmental governance are the biggest obstacles to resources and environmental carrying capacity in Gansu Province,followed by environmental pollution and ecological environment.Among them,the main obstacle factors affecting the carrying capacity of resources and environment in Lanzhou,Baiyin,Dingxi,Pingliang and Tianshui are water resources.The biggest obstacle factors in Jinchang,Jiuquan,Zhangye and Longnan are environmental pollution.The first obstacle factor in Gannan is land resources.(4)Based on the shortboard of carrying capacity as a breakthrough point and the obstacle factors of each carrying subsystem,it is proposed that land use planning and air pollution control should be strengthened in Longzhong area,land desertification control should be strengthened in Hexi corridor area,industrial structure should be rationally adjusted and new energy resources should be developed,water and soil conservation and rational allocation of water resources should be accelerated in southeastern Longdong area,and tourism should be developed in minority areas.In order to realize the sustainable development of natural resources-ecological environment protection-economic and social sustainable development in the region,a differentiated and operational technical thinking is put forward.