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Journal of Desert Research ›› 2021, Vol. 41 ›› Issue (6): 29-40.DOI: 10.7522/j.issn.1000-694X.2021.00085

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Land use/cover change and its ecosystem service value response in the Beijing-Tianjin sandstorm source control project area

Yanhui Lei1(), Guodong Ding1, Zimeng Li1, Wenfeng Chi2, Guanglei Gao1, Yuanyuan Zhao1()   

  1. 1.Key Laboratory on Soil and Water Conservation / Yanchi Research Station,School of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China
    2.College of Resources and Environmental Economics,Inner Mongolia University of Finance and Economics,Hohhot 010070,China
  • Received:2021-02-10 Revised:2021-06-28 Online:2021-11-20 Published:2021-12-17
  • Contact: Yuanyuan Zhao

Abstract:

Monitoring land use/cover and changes in ecosystem service value is one of the most direct and effective ways to assess the benefits of ecological engineering. This study took the Beijing-Tianjin sandstorm source control project area as the research area. Based on indicators such as land use/cover change area and vegetation coverage, land use/cover changes were revealed from the perspectives of land use/cover conversion and land cover modification. Then the ecosystem service value (ESV) was evaluated using the improved equivalent factor method. The results showed that grassland covered more than half of the study area. From 1990 to 2018, the sandy lands and grasslands indicated a decline trend with the increasing of croplands and forests. The vegetation on sandy lands showed a significant improving trend with the annual increase rate of 4.22% per decade. During the same period, the ESV showed a trend of first decrease and then increase. Due to the reduction of sandy land and grassland area and the increase of woodland and cropland area after the implementation of ecological projects, the ESV increased significantly during 2010-2018. From 1990 to 2018, the ESV generally increased by 365.521 billion RMB, of which the increase caused by land use/cover conversion was 12.05 billion RMB, and the increase caused by land cover modification was 535.504 billion RMB. This study showed that the impact of land cover modification on the ESV cannot be ignored. We suggested that in the process of ecological construction, we should not only pay attention to the change of land use/cover mode, such as returning farmland to forest, afforestation and grass planting on unused land, but also pay attention to the restoration and restoration of grassland and woodland, and pay attention to the maintenance and quality improvement of ecological engineering achievements.

Key words: Beijing-Tianjin sandstorm source, land use/cover change, vegetation coverage, climate change, ecosystem services

CLC Number: