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Journal of Desert Research ›› 2022, Vol. 42 ›› Issue (3): 63-73.DOI: 10.7522/j.issn.1000-694X.2021.00172

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The valuation of ecosystem service value of desertification grassland from 2004 to 2014 in Hexi Corridor, China

Mei Shao1,2(), Lipeng Ma3, Xinyuan Wang3, Xuehua Che1,2, Fang Wang1, Junfeng Lu1, Wanyin Luo1()   

  1. 1.Key Laboratory of Desert and Desertification,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    2.University of Chinese Academy of Sciences,Beijing 100049,China
    3.Gansu Monitoring Center for Ecological Resources,Lanzhou 730020,China
  • Received:2021-10-20 Revised:2021-11-15 Online:2022-05-20 Published:2022-06-01
  • Contact: Wanyin Luo

Abstract:

Grassland is the dominant ecosystem in arid and semi-arid areas. It is the main way to evaluate the ecosystem service value on time scale to judge whether the region ecosystem is in improvement or degradation. Based on the field survey, remote sensing classification and interpretation method, and the desertification grassland area data of different types and different degrees in Hexi Corridor, this paper established the evaluation standard system of ecosystem service value of different types and different degrees of desertification grassland in Hexi Corridor to evaluate the dynamic changes of ecosystem service value and service structure of desertification grassland in Hexi Corridor during the third (2004), fourth (2009) and fifth (2014) desertification monitoring. The results showed that: (1) The desertification of grassland in Hexi Corridor showed a slight reversal trend from 2004 to 2014, and the area of desertification grassland decreased from 5.197×106 hm2 to 3.577×106 hm2. (2) The total value of desertification grassland ecosystem services in Hexi Corridor was mainly lost, which was up to 20.9 billion yuan. (3) The total value of ecosystem services of desertification grassland in Hexi Corridor was significantly different in terms of spatial and temporal distribution of desertification types and degrees. (4) The ecosystem service functions of desertification grassland ecosystem in Hexi Corridor tended to be climate regulation, environment purification and hydrological regulation.

Key words: ecosystem service value, desertification grassland, evaluation standard system, Hexi Corridor

CLC Number: