IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v13y2021i8p4571-d539664.html
   My bibliography  Save this article

Elevated Tropospheric Ozone Concentration Alters Soil CO 2 Emission: A Meta-Analysis

Author

Listed:
  • Enzhu Hu

    (Institute of Resources and Environmental Sciences, School of Metallurgy, Northeastern University, Shenyang 110819, China)

  • Zhimin Ren

    (Institute of Resources and Environmental Sciences, School of Metallurgy, Northeastern University, Shenyang 110819, China)

  • Sheng Xu

    (Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China)

  • Weiwei Zhang

    (Ministry of Education Key Lab for Eco-Restoration of Contaminated Environment, Shenyang University, Shenyang 110044, China)

Abstract

Elevated tropospheric ozone (O 3 ) concentration may substantially influence the below-ground processes of terrestrial ecosystems. Nevertheless, a comprehensive and quantitative understanding of O 3 impacts on soil CO 2 emission remains elusive, making the future sources or sinks of soil C uncertain. In this study, 77 pairs of observations (i.e., elevated O 3 concentration treatment versus control) extracted from 16 peer-reviewed studies were synthesized using meta-analysis. The results depicted that soil CO 2 efflux was significantly reduced under short-term O 3 exposure (≤1 year, p < 0.05), while it was increased under extended duration (>1 year, p < 0.05). Particularly, soil CO 2 emission was stimulated in nonagricultural ecosystems, in the free-air CO 2 enrichment (FACE) experiment, and in the soils of lower pH. The effect sizes of soil CO 2 efflux were significantly positively correlated with experimental duration and were significantly negatively correlated with soil pH, respectively. The ozone effect on soil CO 2 efflux would be enhanced at warm temperatures and high precipitation. The duration of O 3 exposure was the fundamental factor in analyzing O 3 impacts on soil CO 2 emission.

Suggested Citation

  • Enzhu Hu & Zhimin Ren & Sheng Xu & Weiwei Zhang, 2021. "Elevated Tropospheric Ozone Concentration Alters Soil CO 2 Emission: A Meta-Analysis," Sustainability, MDPI, vol. 13(8), pages 1-10, April.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:8:p:4571-:d:539664
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/13/8/4571/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/13/8/4571/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:13:y:2021:i:8:p:4571-:d:539664. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.