升温和水位下降对泥炭地碳库稳定性的影响

黄咸雨; 张一鸣; 薛建涛; 于小芳

doi:10.3799/dqkx.2024.119

Volume 50 Issue 3

Mar. 2025

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Article Navigation > Earth Science > 2025 > 50(3): 846-856

Huang Xianyu, Zhang Yiming, Xue Jiantao, Yu Xiaofang, 2025. Influence of Warming and Water Level Drawdown on the Stability of Peatland Carbon Stock. Earth Science, 50(3): 846-856. doi: 10.3799/dqkx.2024.119

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Huang Xianyu, Zhang Yiming, Xue Jiantao, Yu Xiaofang, 2025. Influence of Warming and Water Level Drawdown on the Stability of Peatland Carbon Stock. Earth Science, 50(3): 846-856. doi: 10.3799/dqkx.2024.119

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Influence of Warming and Water Level Drawdown on the Stability of Peatland Carbon Stock

doi: 10.3799/dqkx.2024.119

1.
State Key Laboratory of Geomicrobiology and Environmental Changes, China University of Geosciences (Wuhan), Wuhan 430078, China
2.
Hubei Key Laboratory of Critical Zone Evolution, School of Geography and Information Engineering, China University of Geosciences (Wuhan), Wuhan 430078, China
3.
School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, China

Received Date: 2024-11-06
Publish Date: 2025-03-25

Abstract

Abstract

Peatlands play a crucial role in the global carbon cycle by storing carbon, but they are also a major source of methane emissions. Understanding how climate change affects the stability of carbon stores in peatlands is a key area of research. This review examines the effects of factors such as warming and fluctuations in water levels on the stability of carbon stores in peatlands, as well as the role of plants in responding to warming and drought. Research indicates that peatland carbon stocks are highly sensitive to warming, with decomposition rates increasing significantly in the aerobic layer with even slight temperature increases. The anaerobic layer requires greater temperature increases and longer periods to show significant decomposition. Warming also leads to an increase in the CH₄/CO₂ ratio, which can enhance the global warming potential of peatlands. Changes in water levels are a key factor affecting peatland carbon cycling, as drought events not only directly result in enhanced CO₂ emissions but can also indirectly impact carbon store stability through wildfires. Studies have shown that vascular plants can also play a role in releasing old carbon. Future research should focus on developing in-situ observation techniques for metabolic products, examining geological records of extreme climate events, and understanding the response and feedback mechanisms of peatland carbon stores under changing climate conditions.
- stability of carbon stock,
- warming,
- water level drawdown,
- plant mediation,
- utilization of metabolic product,
- carbon cycle,
- climate change

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