Research On The Value Of Ecosystem Service Based On Land Use Change

The northern foot of Qinling Mountains(Xi an Section)is an ecosystem service function guarantee area in Xi'an.It is of great significance to study the land use change and ecosystem service value in this area.It can provide reference for land use planning and ecological envirornment protection in the northern foot of Qinling Mountains(Xi'an Section).Selecting the northern foot of Qinling Mountains(Xi'an Section)as the research area,using land use data in the four periods of 2000,2005,2010 and 2014,based on land use dynamic degree,comprehensive index of land use,principal component analysis,sensitivity of ecological value and coordination degree of ecological economy,the main characteristics and driving factors of land use change in the study area were analyzed,and the research was estimated.The ecosystem service value of the study area was discussed,and the relationship between the ecological environment and the coordinated development of economy in the study area was discussed.The conclusions are as follows:(1)From 2000 to 2014,the area of cultivated land,water area,grassland and other land in the northern foot of Qinling Mountains(Xi'an Section)decreased,while the area of garden land,forest land,urban villages,industrial and mining land and transportation land increased.Among them,the area of transportation land,grassland,town,village and industrial and mining land changes greatly.The comprehensive index of land use degree keeps rising.The factors causing land change in the study area include human factors(economic factors,population factors,policy factors),agricultural production efficiency factors and natural factors.(2)The value of forest ecosystem services in the study area increased,while the value of other land use types decreased.Among the types of ecosystem services in the study area,the value of regulatory services is the highest,followed by support services,cultural services and supply services.The value of ecosystem services in the study area was 8.821 billion yuan in 2000 and 8.237 billion yuan in 2014.The total value of ecosystem services decreased by 583 million yuan.The ecosystem service function of the study area is declining in general.Different types of ecosystem services interact with each other,and their trade-offs and synergies are different.(3)From 2000 to 2014,the level of ecological and economic development in the northern foot of Qinling Mountains(Xi'an Section)was at a low level of conflict;the coordination degree of ecosystems in all counties was at a low level of conflict,but there were differences.The conflict state in Chang'an District was more serious,and that in Zhouzhi County was the slightest.The study area still needs to continue to strengthen ecological protection to achieve a win-win goal of ecology and economy.