Responses of peat carbon at different depths to simulated warming and oxidization

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Summary:
Authors: 
Liangfeng Liu and Huai Chen
Book (published in): 
Proceedings of the 15th International Peat Congress
Venue: 
Kuching
Year: 
2016
Keywords: 
anaerobic, environment, peatlands

SUMMARY

Warming and water table drawdown greatly reshapes carbon cycle in peatlands, especially when the old carbon stored under the peatland subsurface is considered. However, little is known about the effects of warming, oxidization or their combination on carbon decomposition at different peat depths (0100 cm). In this research, soil from different depths from the Zoige Plateau, China was incubated under four scenarios to detect the exported carbon. Our result showed that with enhanced temperature and oxygen, total carbon dioxide (CO2) fluxes increased by 40.7176.5%, and average dissolved organic carbon (DOC) concentration increased by 44159.4%. Soil respiration (Rs) rates and variability under warming and oxidization differed significantly with depth, probably...