Analysis And Evolution Of The Ecological Health Assessment Model In The Central City Of Southwest China

Southwest China is an underdeveloped area in China.In recent years,with the support of the Belt and Road Initiatives and the Western Development policy,Southwest China is developing rapidly.So it is urgent to study the harmonious relationship between ecological environment and human development.This paper takes the central cities in Southwest China,which are densely populated and economically prosperous,as the research object.This paper makes an in-depth study on the health of urban ecosystem.This paper constructs an index system with five levels and 31 specific indicators.The system includes vitality,organizational structure,resilience,ecosystem services,population health sentient.For statistical data and remote sensing image preprocessing.The results of ecosystem health assessment of Chengdu,Guiyang and Kunming in 2000,2010 and 2018 were obtained by fuzzy evaluation model.In order to clarify the development problems of Southwest China,this paper compares it with Guangzhou,which is in a better development state.The conclusions are as follows:(1)The urban ecosystem health status of the three southwest central cities is as follows.In 2000,the ecosystem health status of Chengdu,Guiyang and Kunming was morbid.In 2010,the ecosystem health level of Chengdu,Guiyang and Kunming was morbid in Kunming,and sub-health in Chengdu and Guiyang.In 2018,the ecosystem health status of Chengdu,Guiyang and Kunming was sub-health in Guiyang,and very healthy in Chengdu and Kunming.(2)The health index was calculated to determine the overall health status of the city in each year.The ranking of each year was Chengdu > Guiyang > Kunming in 2000.In 2010,the order was Chengdu > Guiyang > Kunming.Chengdu > Kunming >Guiyang in 2018.On the whole,the urban ecosystem health in Southwest China showed an increasing trend from 2000 to 2018.(3)Guangzhou,the eastern coastal city,and the southwest central city were selected to compare the ecosystem health,and the comprehensive score was calculated.The ranking of the four cities in 2018 was Guangzhou > Chengdu > Kunming >Guiyang.The gap between the three capital cities in Southwest China and Guangzhou is obtained.There is a big gap in organizational structure,resilience and service function in Chengdu.Guiyang has a high rising space in vitality and resilience.Kunming needs to strengthen investment in economic vitality and improve economic level.According to the research results of this paper,combined with the unique geographical location and special environmental conditions of Southwest cities.The limiting factors of urban ecosystem in different years are pointed out.This paper puts forward corresponding measures and solutions.Hope to bring some help for the better development of Southwest cities and provide a new idea for future research.