Study On The Value Change Of Green Infrastructure Ecosystem Services

Green infrastructure is facing multiple threats from urban expansion,increasing population,urban transformation,industrial and mining enterprise development and other activities.As an important life support system in the study area,green infrastructure plays an important role in urban economic development,regional ecological maintenance,and human settlement environment protection.Since November 2018,the regional integration development of the Yangtze River Delta has risen to a national strategy.As the pioneer force for the integration development of the Yangtze River,the construction and application of the Yangtze River Delta Integration Demonstration Zone has attracted widespread attention.Ecosystem service functions refer to the environmental conditions and utilities on which ecosystems form and maintain the existence and development of human beings,including ecosystem products and ecosystem service functions provided by ecosystems for human beings,which are affected by human activities and natural environmental factors.Impact,the change in the type of green infrastructure land use has led to changes in the value of ecosystem services.Using sensitivity to explore the degree of impact of the accuracy of the value coefficient on the calculation results is important for the green infrastructure ecosystem services in the integrated demonstration area of the Yangtze River Delta Meaning.In this paper,the core areas of the Yangtze River Delta Integration Demonstration(including Zhujiajiao Town,Jinze Town,Qingpu District,Shanghai,Lili Town,Wujiang District,Suzhou City,Jiangsu Province,and Xitang Town,Yaozhuang Town,Jiashan County,Jiaxing City,Zhejiang Province)are the research areas.Through interpretation and analysis of remote sensing data in 2005,2010,2015 and 2018,six types of land types were obtained: wetlands,woodlands,grasslands,arable land,water bodies and construction land,referring to ecosystem services of scholars such as Costanza and Xie Gaodi The value equivalent scale and the sensitivity index are further explored,and the following research and conclusions are obtained through research:(1)Research on land use of green infrastructure.Based on the ArcGIS 10.3 system software,the interpretation analysis of remote sensing images in the four periods of the Yangtze River Delta Integrated Demonstration Zone shows that from 2005 to 2018,the proportion of land use types in the study area was wetland>water body>construction land>forest land>cultivated land >Grassland,the area of wetland and forest grassland in the study area has decreased,the construction land has increased significantly,and the area of cultivated land has also increased;whether it is a temporal change or a spatial change of green infrastructure,the change from 2010 to 2015 is slower.(2)Research on the service value of green infrastructure ecosystem.Judging from the change in the total value,in the 13 years from 2005 to 2018,the overall value of green infrastructure ecosystem services in the Yangtze River Delta Integration Demonstration Zone tended to decline.From the perspective of the three-stage decline in the value of ecosystem services,the value of green infrastructure ecosystem services decreased by 471.4 million yuan from 2005 to 2010;the value of green infrastructure ecosystem services decreased by 147.4 million yuan from 2010 to 2015;The value of ecological services for green infrastructure in the study area decreased by 139.7 million yuan in the three years from 2015 to 2018,and overall,it decreased by 758.5 million yuan in the 13 years from 2005 to 2018.Finally,on the sensitivity and quality index of green infrastructure ecosystem service value in the study area,it was found that in 2018,among the various types of green infrastructure,the smallest sensitive index was grassland,as low as 0.0001,and the largest was wetland,which was 0.6590.(3)Analysis results of driving factors affecting service value of green infrastructure ecosystem in demonstration areaThe analysis of the three driving factors of population,affluence and technology in the study area found that technological progress has the greatest impact on it,which is 0.423.This shows that in 13 years,technology is the first productive force,and the development of technology will promote economic development and society.Progress,but the current scientific and technological development in China is still working on the process of environmental protection.The population and affluence are-0.026 and-0.076,respectively.(4)Put forward corresponding countermeasures and suggestions according to the actual situation of the study areaAccording to the dynamic fluctuations of the service value of the green infrastructure ecosystem in the study area,combined with the specific situation of the integrated demonstration area of the Yangtze River Delta,put forward appropriate suggestions.The specific suggestions include the combination of green infrastructure land use changes and the construction of ecological land;strengthen the demonstration area the top level design of the ecological green integration development guarantees the organization mechanism;implement the system and improve the ecological compensation mechanism.