RESEARCH ON THE SPATIOTEMPORAL DIFFERENTIATION PATTERNS OF ECOSYSTEM SERVICE VALUES AND EQUILIBRIUM IN INNER MONGOLIA, CHINA.

Ecosystem service value accounting is a preliminary exploration and concrete practice of the "Two Mountain Theory." In this study, data on land use/land cover changes (LUCC) in various leagues and cities in Inner Mongolia Autonomous Region, China, from 2001 to 2020 were used to calculate the ecosystem service value (ESV) and ecosystem dynamics (EC) of Inner Mongolia Autonomous Region. The study calculated the equilibrium of ecosystem service values at the league and county levels and conducted spatial autocorrelation analysis on the unit ecosystem service value and equilibrium, revealing the differentiation patterns and characteristics of ecosystem service values in Inner Mongolia. The results indicate that the overall trend of ecosystem service values in Inner Mongolia Autonomous Region is stable with a slight decline. In the past 20 years, the maximum value occurred in 2013, with an ESV of 9765.4 billion yuan, and the minimum value occurred in 2019, reaching 9664.41 billion yuan. The average ESV over 20 years is 9727.96 billion yuan. In the past 20 years, the distribution of city-level ecosystem service values in Inner Mongolia Autonomous Region has generally shown a pattern of higher values in the east and lower values in the west, with significant spatial differentiation characteristics. The overall per capita ecosystem service value in county-level areas of Inner Mongolia Autonomous Region has slightly increased in the northeast, slightly decreased in most of the central and southeast areas and showed overall an upward trend in the western region. The combination of ecosystem service values and equilibrium in Inner Mongolia Autonomous Region exhibits four categories, seven regions, and one belt. [ABSTRACT FROM AUTHOR]