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Impacts of Bark Beetle-induced Tree Mortality on Pyrogenic Carbon Production and Heat Output in Wildfires for Fire Modeling and Global Carbon Accounting by Alexandra Howell; Mario Bretfeld; Erica Belmont is a Environmental Science article available to read on EtoBox.

What is Impacts of Bark Beetle-induced Tree Mortality on Pyrogenic Carbon Production and Heat Output in Wildfires for Fire Modeling and Global Carbon Accounting about?

Forests store significant quantities of carbon, and accurate quantification of the fate of this carbon after fire is necessary for global carbon accounting. Pyrogenic carbon (PyC) encompasses various carbonaceous products of incomplete combustion formed during fires and has potential to act as a carbon sink for up to millennia, but current estimates of PyC production in wildfires vary widely. Northern hardwood forests have changed dramatically in recent decades due to insect epidemics, such as the bark beetle epidemic in the Rocky Mountain Region which has caused widespread mortality. This study assessed impacts of bark beetle-induced mortality on fuel pyrolysis kinetics, carbon partitioning of combustion products, and net heat output to aid in forest fire modeling and carbon accounting by comparing healthy and beetle-killed lodgepole pine tree boles burned in a 2018 forest fire in southeast Wyoming, USA with unburned boles. Results showed charring predominantly restricted to the bark and cambium. Significant differences between burned and unburned healthy and beetle-impacted bark/cambium compositions were identified, and PyC production and energy output were quantified. Charring e

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Author

Alexandra Howell; Mario Bretfeld; Erica Belmont

Publisher

Elsevier Science; Elsevier ; Elsevier BV; Publons (ISSN 0048-9697)

Published

2020

Language

EN

Field

Environmental Science (Physical Sciences)