Study On The Interactive Effect Between Urban Land Development Intensity And Eco-Environment

Urban development has a certain negative effect on the urban ecological environment,on the other hand urban ecological environment also has a restrictive effect on urban land development and utilization.How to realize the coordinated development of urban development and ecological environment is an urgent task to be studied.However,little research has been done on the relationship between urban land development intensity and ecological environment.Therefore,the paper through the analysis of the spatial and temporal characteristics of urban land development intensity and its ecological environment in Hexi Corridor of Gansu Province,with the help of the Kernel density curve chart and the grey relational grade model,reveals the dynamic evolution law and the interactive influence degree of the both,and puts forward the Policy Implications and path strategy of optimizing the urban land development intensity and ecological environment reasonably,we help can provide reference for urban sustainable development and ecological environment protection and restoration.The results show that:(1)From 2008 to 2017,the urban land development intensity of the Hexi Corridor showed an increasing trend,and the development breadth and development depth also showed an increasing trend.The largest urban land development intensity is Jiayuguan City and the smallest is Wuwei City,indicating that the regional differences in urban land development intensity are obvious.The intensity of urban land development generally shows an increasing trend,but the growth rate of different cities varies greatly.Jiayuguan City has the largest increase and Jinchang City has the smallest increase.(2)During the study period,the intensity of urban land development showed a dynamic evolution characteristic of growing,obvious polarization,and widening regional gap.There is also polarization in the breadth of urban land development,and regional differences are shrinking.The dynamic evolution characteristics of urban land development depth are similar to urban land development intensity,but the polarization phenomenon is not obvious.(3)From 2008 to 2017,the urban ecological environment of the Hexi Corridor showed an increasing trend,and the urban ecological level,environmental load and environmental protection also increased to varying degrees.The characteristics of urban ecological level and environmental protection are similar to the characteristics of ecological environment evolution,and the environmental load shows a fluctuating trend in time.(4)During the study period,the urban ecological environment showed the dynamic evolution characteristics of continuous improvement,weak polarization,and reduction of regional differences.The dynamic evolution characteristics of the urban ecological level and environmental protection are basically similar to the ecological environment,but the polarization phenomenon of the urban ecological level is weak,and the environmental load is an evolution characteristic that increases first and then decreases,and the regional differences are expanding.(5)The change of urban land development intensity in the Hexi Corridor has a strong impact on the ecological environment.The impact of the development breadth on the urban ecological environment is greater than the depth of urban development,and the specific impact of different cities differs.The indicators of urban development breadth have different impacts on the urban ecological environment.Green land and square land have the largest impact on the urban ecological environment,followed by industrial land.The impact of various indicators of urban land development depth on the urban ecological environment is relatively weak.The urban ecological environment also has a strong influence on the intensity of urban land development,indicating that urban ecological space,environmental protection construction and pollutant emissions are the main factors that limit the development and utilization of urban land.(6)According to the urban land development intensity of the Hexi Corridor Cities and the actual situation,differences and dynamic evolution characteristics of the ecological environment,the disorderly growth of urban land can be controlled,an environment-friendly land use model can be sought,and ecological restoration and environmental protection can be emphasized to improve the urban space management Start with two aspects,differentiate and reasonably control the intensity of urban land development,and promote the coordinated development of urban land development intensity and ecological environment.