Biogeosciences
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Articles | Volume 23, issue 4
Articles | Volume 23, issue 4
https://doi.org/10.5194/bg-23-1403-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-1403-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 4
Research article
 | 
23 Feb 2026
Research article |  | 23 Feb 2026

Long-term effects of drainage and rewetting on the degradation and preservation of peat organic matter in sub-tropical climate

Guy Sapir, Alon Angert, Yoav Oved Rosenberg, and Rotem Golan

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Latest update: 20 Jul 2026
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Short summary
Peatland drainage causes over 3.5 % of global anthropogenic GHG emissions, with ~75 % from warm climates. This study examines a drained and partially rewetted warm-climate wetland. Over 66 years, drainage caused ~70 % loss of soil organic matter and substantial CO2 emissions. Rewetting, initiating ~30 years ago, helped preserve organic matter. Yet, long-term data and modeling shows a limited window for its effectiveness, highlighting the need to prioritize sites based on time since drainage.
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