Spatial-temporal Variation And Coupling And Coordination Analysis Of Soil And Water Resource Carrying Capacity In Yanbian Prefecture Based On Ecological Footprint Method

Water resources are renewable resources among natural resources.They are restored and renewed through the circulation of nature and support the sustainable development of social economy.Land resources provide the material support needed by the population of a country or region.Water resources and land resources cooperate with each other to form a complete system,exert its good ecological benefits,and play important functions in agriculture,industry,and service industries.Water and land resources interact and coordinate with each other to jointly promote the sustainable development of society and economy.In order to provide a reference for the optimal allocation of water and land resources in the social and economic development of Yanbian Prefecture,the following studies have been done.This paper uses 8 cities(counties)in Yanbian Korean Autonomous Prefecture as units,and uses spatial analysis and ecological footprint methods to analyze water resources carrying capacity and land resource carrying capacity in time and space.The coupling coordination degree model is used to study Yanbian Korean Autonomous Prefecture.Coupling status of per capita ecological footprint and carrying capacity of soil and water resources in 2010,2015,and 2018.Draw the following conclusions:(1)From 2000 to 2018,the per capita ecological footprint of comprehensive water use in Yanbian Prefecture showed a fluctuating upward trend,which was consistent with the change trend of per capita agricultural water ecological footprint.The per capita ecological footprint of comprehensive water consumption is higher in the southeast region,lower in the northwest region,and decreases from the southeast to the northwest.Comparing the average per capita ecological footprint of water resources in Yanbian Prefecture from 2000 to 2018,the descending order is Hunchun City> Helong City> Longjing City> Tumen City> Wangqing County> Antu County>Dunhua City> Yanji City;The per capita ecological carrying capacity of water resources in Yanbian Prefecture has a relatively flat trend,showing a slight downward trend.In space,the bearing capacity of the southeast is higher,and the bearing capacity of the northwest,north and west is lower.Comparing the average per capita ecological carrying capacity of water resources in Yanbian Prefecture from 2000 to2018,the order from largest to smallest is Antu County>Hunchun City>Dunhua City>Wangqing County>Helong City>Tumen City>Longjing City>Yanji City City:The per capita ecological deficit of water resources and ecological carrying capacity have the same changing trend,showing a slight decrease.The per capita water resources of Yanji and Longjing have ecological deficits,and other cities(counties)have ecological surpluses.According to the water resources ecological stress index,half of the cities(counties)in Yanbian Prefecture are in a safe state,and the overall water resource utilization and ecological environment of Yanbian Prefecture are relatively good.(2)From 2010 to 2018,the total ecological footprint of per capita land resources in Yanbian Prefecture gradually decreased.From a spatial perspective,the total ecological footprint of land resources per capita in Yanbian Prefecture is higher in the west,higher in the northeast,and lower in the middle.Comparing the ecological footprint of Yanbian Prefecture in 2000,2015 and 2018,the average per capita land resources in descending order are Dunhua City> Longjing City> Antu County>Helong City> Hunchun City> Wangqing County> Tumen City>Yanji City;the ecological carrying capacity of land per capita for each item in each city(county)in Yanbian Prefecture is gradually decreasing,with little change,which is consistent with the change trend of the ecological footprint of land resources per capita.Compare the average ecological carrying capacity of land resources per capita in Yanbian Prefecture for many years The order of strength from large to small is Dunhua City> Longjing City> Antu County> Wangqing County> Hunchun City>Helong City> Tumen City> Yanji City;from 2000 to 2018,the total ecological deficit of per capita land resources gradually decreased.The per capita ecological deficit of grassland resources has changed greatly,and other projects have changed little.The land ecological pressure index in Yanbian Prefecture is relatively high,and all cities(counties)in the three years are in an unsafe state.(3)From 2010 to 2018,the per capita water and soil resources ecological footprint coupling coordination degree of each city(county)in Yanbian Prefecture was low.Most cities(counties)belonged to the state of barely coordination to the primary coordination range,and their coupling coordination degree showed a decline The overall coupling status of the ecological carrying capacity of water and soil resources is better than the coordination status of the ecological footprint.Most cities(counties)belong to the status of barely coordinated to the intermediate level of coordination,and its changes show a trend of first decreasing and then increasing.Yanji City has the lowest degree of coupling between the two.The coupling of water resources and land resources in Yanbian Prefecture is not optimistic,and the coordinated development of land and water resources should be strengthened.