Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 769, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2021.145212
Keywords
Wildland fire; Carbon; Wetlands; Climate change; Boreal; Anthropogenic disturbance
Categories
Funding
- Natural Sciences and Engineering Research Council (NSERC)
- University of Lethbridge
- NSERC
- University Of Lethbridge School Of Graduate Studies
Ask authors/readers for more resources
Boreal peatlands play a critical role in the global climate system, storing a large quantity of soil carbon. However, with climatic warming, these carbon stores are at risk, potentially transitioning from carbon sink to source. While negative ecohydrological feedback mechanisms may initially compensate for increased carbon loss, factors such as climatic warming and anthropogenic peatland fragmentation could drive a positive carbon feedback cycle.
Boreal peatlands store a disproportionately large quantity of soil carbon (C) and play a critical role within the global Climate system; however, with climatic warming, these C stores are at risk. Increased wildfire frequency and severity are expected to increase C loss from boreal peatlands, contributing to a shift from C sink to source. Here, we provide a comprehensive review of pre- and post-fire hydrological and ecological interactions that affect the likelihood of peatland burning, address the connections between peatland fires and the C-climate cycle, and provide a conceptual model of peatland processes as they relate to wildland fire, hydro-climate, and ecosystem change. Despite negative ecohydrological feedback mechanisms that may compensate for increased C loss initially, the cumulative effects of climatic warming, anthropogenic peatland fragmentation, and subsequent peatland drying will increase C loss to the atmosphere, driving a positive C feedback cycle. However, the extent to which negative and positive feedbacks will compensate for one another and the timelines for each remains unclear. We suggest that a multi-disciplinary approach of combining process knowledge with remotely sensed data and ecohydrological and wildland fire models is essential for better understanding the role of boreal peatlands and wildland fire in the global climate system. (C) 2021 The Authors. Published by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available