2025-10-23 ジョージア工科大学
Cornell researchers analyzed data from 10, yurt-like test chambers in a natural boreal spruce bog in northern Minnesota.
＜関連情報＞
- https://research.gatech.edu/peatlands-huge-reservoir-carbon-risk-release
- https://news.cornell.edu/stories/2025/10/peatlands-huge-reservoir-carbon-risk-release
- https://www.science.org/doi/10.1126/science.adv7104
干ばつによる泥炭地の炭素損失は、二酸化炭素濃度の上昇と温暖化によって悪化している Drought-induced peatland carbon loss exacerbated by elevated CO2 and warming
Quan Quan, Jian Zhou, Paul J. Hanson, Daniel Ricciuto, […] , and Yiqi Luo
Science Published:23 Oct 2025
DOI:https://doi.org/10.1126/science.adv7104
Editor’s summary
Droughts are increasing in frequency and severity with climate change, which can reduce ecosystems’ primary productivity. However, more studies are needed to determine how drought combines with warming and elevated carbon dioxide to affect ecosystems. Quan et al. manipulated these factors in peatland, a system that stores large amounts of carbon due to inhibited decomposition, in northern Minnesota. Extreme drought conditions over 2 months combined with warming substantially reduced primary productivity under both ambient and elevated carbon dioxide. Lower water tables and increased substrate for decomposition from plants increased respiration. This study suggests that future droughts could undermine peatlands’ carbon sequestration, creating a positive feedback for climate change. —Bianca Lopez
