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Acta Prataculturae Sinica ›› 2023, Vol. 32 ›› Issue (8): 14-27.DOI: 10.11686/cyxb2022358

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Spatio-temporal evolution of grassland ecosystem service value in Inner Mongolia under multi scenario simulation

Xue-min LI1(), Tong-ning LI1, Zhi-yu WU1, Zhen-guo WU2()   

  1. 1.School Finance and Taxation,Inner Mongolia University of Finance and Economics,Hohhot 010070,China
    2.Inner Mongolia Academy of Social Sciences,Hohhot 010010,China
  • Received:2022-09-08 Revised:2022-10-31 Online:2023-08-20 Published:2023-06-16
  • Contact: Zhen-guo WU

Abstract:

This research explored the ecosystem service value spatio-temporal evolution mechanisms caused by grassland use change under multiple scenarios. Such information is important for improving grassland ecosystem service value and maintaining regional ecological security. We first measured and analyzed the changes in different types of grassland use and grassland ecosystem service value in Inner Mongolia from 2010 to 2020 based on the comprehensive sequential classification of grassland (CSCS) and the estimation method of ecosystem service value (ESV). Next, we used the PLUS model to simulate the utilization of various types of grassland under sustainable development, grassland protection and balanced development scenarios, and estimated the service value of the grassland ecosystems. Last, we compared and analyzed the aggregation of grassland ecosystem service values under the three scenarios based on hot spot analysis and spatial grid tools. We found that: 1) The service value of grassland ecosystems in Inner Mongolia shows an increasing trend, with a total increase of 10.14 billion CNY from 2010 to 2020, with the main contributions being from hilly desert grassland and hilly meadow grassland. 2) As assessed in 2020, the service value of grassland ecosystems under the three simulation scenarios of continuous development, grassland protection and balanced development has increased in varying degrees, among which the ecosystem service value of western grassland under the grassland protection scenario has increased the most. 3) The localities of high and low grassland ecosystem service value under the three simulation scenarios are characterized by wide distribution and aggregation, and the high value localities typically show a decentralized aggregation around small areas. The results provide a scientific basis for planning the restoration of grassland ecosystem balance and ecological security in the study area.

Key words: grassland ecosystem, ecosystem service value, multi scenario simulation, Inner Mongolia