The Study Of Guiyang Urban Ecosystem Health Assessment

Guiyang City,as a mountainous city on the plateau,has inherent vulnerability in its ecological system.Under the background of rapid urban development,Guiyang City has tense man-land relationship and frequent natural disasters,while ecosystem health assessment can truly reflect the relationship between man and nature in the city,and explore the driving factors behind it in combination with the socio-economic environment,so as to provide a reference for future urban sustainable development.Therefore,this paper comprehensively considers the human,natural and social characteristics of Guiyang City,constructs an evaluation index system,evaluates the health status of its ecosystem by using the fuzzy mathematics evaluation method,and forecasts its future development trend.The conclusions are as follows:1.Construction of the evaluation index system of VORSP urban ecosystem health in Guiyang City.According to the characteristics of Guiyang City,the evaluation index system was established from five aspects:vitality,organizational structure,resilience,ecosystem service function and population health.Thirty-one indicators were selected by principal component analysis to establish the evaluation index system of urban ecosystem health in Guiyang City.2.Application of Fuzzy Mathematics Evaluation in Health Assessment.Collecting the data of each index,eliminating the influence of different unit dimensions,calculating the weight of each index,calculating the membership matrix of each index,and using the evaluation model to evaluate.Finally,the values of urban ecosystem health in Guiyang City from 2008 to 2017 were calculated as 0.576,0.599,0.604,0.625,0.644,0.671,0.682,0.706,0.716,0.719,which were evaluated as sub-health,sub-health,sub-health,sub-health,sub-health,sub-health,sub-health,health,health and health.The health level of urban ecosystem in Guiyang city is increasing year by year,which shows that the,health status of urban ecosystem in Guiyang city is improving constantly.3.Forecasting the development trend of urban ecosystem health in Guiyang City.Using the calculated urban ecosystem health value and GM(1,1)model,the future development trend of urban ecosystem health in Guiyang City is predicted.From 2018 to 2022,the values of urban ecosystem health in Guiyang City were 0.7509,0.7704,0.7903,0.8106 and 0.8315.According to the predicted values,the urban ecosystem health of Guiyang City will increase year by year in the next five years,and will develop towards a"very healthy"state with a good development trend.Through the above research,this paper finally puts forward some suggestions to improve the health status of urban ecosystem in Guiyang City,with a view to improving the health status of urban ecosystem in Guiyang City in the future,providing a new perspective for the sustainable development of Guiyang City,and providing new ideas for the policy formulation of urban managers.