Journal of Geo-information Science ›› 2023, Vol. 25 ›› Issue (5): 999-1011.doi: 10.12082/dqxxkx.2023.220503

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Evaluation of Changes in Ecosystem Services in Ecological Conservation Red Line and the Entire Area of Ningxia

SHI Xuewei(), CHEN Xuhui, CAI Mingyong, ZHANG Xinsheng, SHEN Zhen, TAI Wenfei, SHEN Wenming, LI Jing, XIAO Tong()   

  1. Satellite Application Center for Ecology and Environment, Ministry of Ecology and Environment of the People's Republic of China, Beijing 100094, China
  • Received:2022-07-12 Revised:2023-01-11 Online:2023-05-25 Published:2023-04-27
  • Contact: XIAO Tong;
  • Supported by:
    National Key Research and Development Program of China(2021YFB3901103);National Natural Science Foundation of China(41501117)


Ningxia is one of the first provinces in China that has finished the delineation of Ecological Conservation Red Line (ECRL). Nearly one fourth of Ningxia has been included in ECRL, significantly contributing to maintain the ecological security of the northern region. However, there is a lack of relevant research on the evaluation of the contribution of the ecological barrier and the protection effect of the eco-redline in Ningxia. In this paper, based on the equivalent value of Ningxia ecosystem service base and land use data at a 2-m resolution, we objectively evaluated the Ecosystem Service Value (ESV) in 2020 and its changes between 2018-2020, and analyzed the effect of the ECRL delineation. Consequently, a critical direction for ecological protection goals is emphasized for this autonomous region. Our findings include: (1) In 2020, the total natural ecological assets stock in Ningxia was 3.32 million hectares, which mainly consists of forest, grasslands, and wetlands, providing a ESV of around 88.90 billion yuan for the region. During the period of 2018—2020, there was an increase of ESV (106 million yuan); (2) The ECRL area ( one fourth of the regional area) contributed more than one third of the ESV in the entire region, and 63% of the increase in ESV during the evaluation period was attributed to the ECRL area; (3) Meadows provided 52% of ESV in the entire region, with only 31% located in ECRL area. During 2018—2020, meadow ecosystems also faced problems such as stock reduction, desertification, and degradation. Increasing the meadows ecosystem stock and quality is the key factor for the incremental value of ecosystem services; (4) It is suggested to follow the internal mechanism of ecosystem structure and process, center on the regional dominant ecological function and the characteristics of the ecosystem structure, systematically carry out ecological protection and restoration based on local conditions.

Key words: ecosystem service value, Ecological Conservation Red Line (ECRL), value equivalent factor, ecosystem classification, Ningxia