Estimation of Ecosystem Service Value Change and Its Spatial Characteristics in Northeast Farming Pastoral Ecotone in the Past 30 Years:Taking Tongyu County of Jilin Province as an Example
Taking Tongyu county of Jilin province as the study area, using land use data, DEM data, 1:10000 basic scale topographic map data and soil data in 1986 and 2015, the value of different types of ecosystem services in this area was estimated through ecosys-tem service value coefficient and GIS spatial analysis technology. This paper analyzes the changes of service value of different types of ecosystems in recent 30 years, and studies the spatial differentiation of their change characteristics. The results showed that the area changes of forest land and grassland had a significant impact on the service value of ecosystems in recent 30 years; from the perspec-tive of soil types, the ecosystem service value of chernozem, calcareous chernozem, light chernozem, meadow calcareous soil, etc. has increased significantly; the value of ecological services decreased significantly where the slope was in the range from 0° to 2°; the farther away from water systems and residential areas, the value of ecological services is gradually declining.
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