Study On The Influence Of Land Use Change On Ecosystem Service Value In Hebei Province

Land use change is an important factor affacting ecological environment and it has far-reaching influence on spatial layout of ecosystem service value.In the context of continuously seeking to improve the ecological environment and achieve sustainable development,studying the impact of land use changes on the ecological environment is of great significance to improve people’s quality of life,living environment and promote regional economic development.Based on remote sensing image data,this paper obtains land use data of Hebei from 2000 to 2015 and uses the transfer matrix method to quantitatively analyze land use change by ArcGIS.It is concluded that the amplitude of land use change,speed of land use change,land use structure change and the characteristics of transfer matrix.Then,based on the ecosystem services value calculation formula that Costanza put forward and the equivalent factor table that former scholars amend,the ecosystem services value evaluation model is set up by using the sensitivity analysis to verify the exactness of the result.Finally,the grid cell method is adopted to explore the space difference of ecosystem services value.During the study period,The proportion of land use types in Hebei province from large to small is arable land > forest land > grassland > construction land > water area > unused land.Cultivated land area and grassland area continue to decrease from 2000 to 2015.The forest land increases first and then decreases,and the overall trend showed an increasing trend.However,the water area first decreases and then increases,and the overall trend decreases,and construction land area continues to increase.Land use dynamics first decreases and then increases,and land circulation was more frequent.The total value of ecosystem services in Hebei province continues to decline from 2000 to 2015.And increased forest area is the main source of increased value of ecosystem services.The ecological service value brought by the conversion of construction land and grassland to other land use types is insufficient to make up for the negative flow of ecological service value brought by the conversion of cultivated land and forest land.Ecosystem service value of Hebei province based on grid unit is divided into five grades The low ecological service value is mainly distributed in the southern part of Hebei province and Tangshan city.The lower value are mainly distributed in Zhangjiakou city in the Hebei province,scattered in Qinhuangdao City and the southern region of Hebei.The intermediate ecosystem service value are mainly distributed in Taihang mountain and Zhangjiakou city.The higher and high value are mainly distributed in Chengde city in the northern part of Hebei Province.Finally,based on the research results,this paper provides policy recommendations for the province’s land resources,ecological environment and regional economic sustainable development.