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ORIGINAL RESEARCH article

Front. Plant Sci.
Sec. Functional Plant Ecology
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1438343
This article is part of the Research Topic Vegetation Resilience in Ecological Autocatalysis under Climate Change View all 5 articles

Loss rate of net primary productivity under drought stress on the Yinshanbeilu of Inner Mongolia, China

Provisionally accepted
Wang Sinan Wang Sinan 1*Yingjie Wu Yingjie Wu 1*Wenjun Wang Wenjun Wang 1*Jianying Guo Jianying Guo 1*Mingyang Li Mingyang Li 2*
  • 1 China Institute of Water Resources and Hydropower Research, Beijing, China
  • 2 Shandong Provincial Water Resources Research Institute, Jinan, Shandong Province, China

The final, formatted version of the article will be published soon.

    The net primary production (NPP) of vegetation in the Yinshanbeilu was calculated using the Carnegie-Ames-Stanford Approach (CASA) model, and subsequent study concentrated on the NPP's geographical and temporal variable characteristics. By the calculation of the standard precipitation evapotranspiration index (SPEI), the study also sought to examine the relationship between drought and NPP at various time scales.Researchers also built drought loss rate curves based on various fertility stages using the vulnerability curve construction method. Findings revealed that the SPEI had varying degrees of efficacy in capturing drought conditions at various time frames. Nonetheless, the SPEI's spatial distribution, which shows a wet distribution in the east and an arid distribution in the west, exhibited identical characteristics for all scales and may be used to indicate drought.Significant interannual variation was seen in the NPP of the study area's vegetation, which fluctuated in an upward direction from 2000 to 2020. 75.89%, 77.23%, 81.35%, and 83.56% of the area were found to have a positive correlation between the SPEI and vegetation NPP at various time scales, with 42.53%, 48.15%, 90.72%, and 92.75% of the area passing the significance test (p < 0.05), in that order. Their results showed that as the SPEI time scale was increased, the link between vegetation NPP and SPEI became stronger. The loss rate of vegetation NPP fluctuated and grew regularly with the expansion of drought degree, varying between 20-50%, according to drought loss rate curves created for each fertility period.

    Keywords: net primary productivity, drought, response, Loss rate, CASA model

    Received: 25 May 2024; Accepted: 14 Jan 2025.

    Copyright: © 2025 Sinan, Wu, Wang, Guo and Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Wang Sinan, China Institute of Water Resources and Hydropower Research, Beijing, China
    Yingjie Wu, China Institute of Water Resources and Hydropower Research, Beijing, China
    Wenjun Wang, China Institute of Water Resources and Hydropower Research, Beijing, China
    Jianying Guo, China Institute of Water Resources and Hydropower Research, Beijing, China
    Mingyang Li, Shandong Provincial Water Resources Research Institute, Jinan, Shandong Province, China

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