Abstract:

The study of land use change and ecosystem service value (ESV) is of great significance to the sustainable development and utilization of land resources. Taking Harbin as the study area, the characteristics of land use changes were analyzed by using the comprehensive evaluation and sensitivity analysis method of ecosystem service value based on equivalent factor. By improving and adjusting the unit area corresponding to different land use types and the service value and coefficient table of ecosystem in Harbin, this paper made a comprehensive, systematic and in-depth analysis on the temporal and spatial distribution pattern of ecosystem service value in Harbin from 2005 to 2020. The results showed that (1) from 2005 to 2020, the area of cropland and construction land increased slightly, while the area of forest land decreased gradually; the changes of the other three land use types were relatively small; (2) the overall ESV of Harbin showed a downward trend, forest, cropland and water area were the main contributors to the value of ecosystem services in Harbin, and the ecological service value of Harbin was mainly reflected in water conservation, soil protection and waste treatment. Therefore, when formulating the land use plan for the study area, it is necessary to focus on protecting the land use types with higher ecosystem service value coefficient, such as forest, cropland and water area, and carry out more scientific and rational planning, so as to realize the sustainable development of the land use types in each region in Harbin.

Key words: ecosystem service value, Harbin, value equivalent factor, land use change