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Scots pine forests, Terrestrial biosphere models, High-latitudes, Soil thermal dynamics, Canadian forest-fires, Atmospheric CO2, Russian forests, Satellite data, Climate-change, Net primary productivity

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Subject-Keyword: Scots pine forests Terrestrial biosphere models High-latitudes Soil thermal dynamics Canadian forest-fires Atmospheric CO2 Russian forests Satellite data Climate-change Net primary productivity

Type of item: Journal Article Published

Language: English

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Description: Wildfire is a common occurrence in ecosystems of northern high latitudes, and changes in the fire regime of this region have consequences for carbon feedbacks to the climate system. To improve our understanding of how wildfire influences carbon dynamics of this region, we used the process-based Terrestrial Ecosystem Model to simulate fire emissions and changes in carbon storage north of 45 degrees N from the start of spatially explicit historically recorded fire records in the twentieth century through 2002, and evaluated the role of fire in the carbon dynamics of the region within the context of ecosystem responses to changes in atmospheric CO2 concentration and climate. Our analysis indicates that fire plays an important role in interannual and decadal scale variation of source-sink relationships of northern terrestrial ecosystems and also suggests that atmospheric CO2 may be important to consider in addition to changes in climate and fire disturbance. There are substantial uncertainties in the effects of fire on carbon storage in our simulations. These uncertainties are associated with sparse fire data for northern Eurasia, uncertainty in estimating carbon consumption, and difficulty in verifying assumptions about the representation of fires that occurred prior to the start of the historical fire record. To improve the ability to better predict how fire will influence carbon storage of this region in the future, new analyses of the retrospective role of fire in the carbon dynamics of northern high latitudes should address these uncertainties.

Date created: 2007

DOI: doi:10.7939-R3ZP3W353

License information:

Rights: © 2007 American Geophysical Union. This version of this article is open access and can be downloaded and shared. The original authors and source must be cited.





Autor: Balshi, M.S. McGuire, A.D. Zhuang, Q. Melillo, J. Kicklighter, D.W. Kasischke, E. Wirth, C. Flannigan, M. Harden, J. Clein, J.S.

Fuente: https://era.library.ualberta.ca/


Introducción



JOURNAL OF GEOPHYSICAL RESEARCH, VOL.
112, G02029, doi:10.1029-2006JG000380, 2007 The role of historical fire disturbance in the carbon dynamics of the pan-boreal region: A process-based analysis M.
S.
Balshi,1 A.
D.
McGuire,2 Q.
Zhuang,3 J.
Melillo,4 D.
W.
Kicklighter,4 E.
Kasischke,5 C.
Wirth,6 M.
Flannigan,7 J.
Harden,8 J.
S.
Clein,9 T.
J.
Burnside,9 J.
McAllister,9 W.
A.
Kurz,10 M.
Apps,10 and A.
Shvidenko11 Received 22 November 2006; revised 31 March 2007; accepted 26 April 2007; published 20 June 2007. [1] Wildfire is a common occurrence in ecosystems of northern high latitudes, and changes in the fire regime of this region have consequences for carbon feedbacks to the climate system.
To improve our understanding of how wildfire influences carbon dynamics of this region, we used the process-based Terrestrial Ecosystem Model to simulate fire emissions and changes in carbon storage north of 45°N from the start of spatially explicit historically recorded fire records in the twentieth century through 2002, and evaluated the role of fire in the carbon dynamics of the region within the context of ecosystem responses to changes in atmospheric CO2 concentration and climate.
Our analysis indicates that fire plays an important role in interannual and decadal scale variation of source-sink relationships of northern terrestrial ecosystems and also suggests that atmospheric CO2 may be important to consider in addition to changes in climate and fire disturbance.
There are substantial uncertainties in the effects of fire on carbon storage in our simulations.
These uncertainties are associated with sparse fire data for northern Eurasia, uncertainty in estimating carbon consumption, and difficulty in verifying assumptions about the representation of fires that occurred prior to the start of the historical fire record.
To improve the ability to better predict how fire will influence carbon storage of this region in the future, new analyses of the retrospective role of fire ...





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