Study On The Implication Of Land Use Change On Ecosystem Service Value In Hubei Province

Land is the main carrier of terrestrial ecosystem.Land use change is an important factor of ecological environment change,which determines the power of ecosystem service function and the spatial layout of service value.In the context of strengthening ecological environment construction and pursuing sustainable development,this paper studies the implication of land use change on ecosystem service value in Hubei province,aiming to find out the possible problems of land use and ecological environment in the process of social and economic development in Hubei province.The results can provide suggestions and scientific basis for land use planning and management,ecosystem service protection and promotion,and also provide reference for future ecosystem service value research in Hubei province.Based on the land use remote sensing image data of Hubei province in 2005,2010,2015 and 2020,this paper analyzed the spatiotemporal evolution of land use from five aspects,such as the changes of land use type,amplitude,dynamic attitude,transfer characteristics and utilization degree.Based on the latest research results of many scholars at home and abroad on ecosystem service value assessment,the evaluation model of ecosystem service value in Hubei province was constructed,and the core inflation rate and spatial heterogeneity coefficient were introduced to optimize the model.The spatiotemporal differences of ecosystem service value were analyzed by taking the city as the unit.The implication of land use change on ecosystem service value is discussed from four aspects:the direction of ecosystem service value change,the change of ecosystem service value of different land use types,the coordination of environment and economic growth,and the forest ecosystem service value.Suggestions are put forward for sustainable land use and regional sustainable development.The results showed that during the study period,the proportion of land use types in Hubei province was:forest land,arable land,water area,construction land,grassland and unutilized land.The area of arable land,forest land and grassland had been continuously reduced,water area and unutilized land had basically remained the same area,and the area of construction land had continued to increase.The dynamic attitude of land use first increased and then decreased,and the land use type changed frequently.The degree of land use was increasing,and it was still at the stage of development.The value of ecosystem services in Hubei province continued to rise.The spatial layout of ecosystem service value(ESV)was dominated by the low ESV area(0～3.0 million/km~2)and medium ESV area(5.0～7.0 million/km~2),with about 64%of the land area increasing the value of services.The order of the contribution value of each service function was as follows:regulating service,supporting service,providing service,cultural service.Forest ecosystem service values was generally higher than that of other ecosystem types,and in the western region,it was higher compared with the central and eastern regions.From 2005 to 2020,the land use change caused 12.08 billion yuan of ecosystem service value loss in Hubei province.The main reasons for the value loss were the conversion of forest land and arable land to construction land due to urban expansion,and the conversion of forest land and water area to arable land due to deforestation for land reclamation and lake reclamation.The results of linear regression model showed that the total value of ecosystem services was positively correlated with the proportion of forest area in the city.The value of ecosystem services increased by 8.1 million yuan for every 1 km~2 increase of forest land area.The innovation points of this paper are as follows:1)Establish a relatively complete and comprehensive ecosystem service value evaluation model.By introducing core inflation rate and spatial heterogeneity coefficient,the problems of low value estimation caused by inflation and same land use type owned different quality are solved.2)The relationship between forest land area and ecosystem service value in Hubei Province was quantified.The results of linear regression analysis can reflect the impact of forest area change on the ecosystem service value,and the regression equation can be used to estimate or predict the ecosystem service value of other regions or periods in the province.