Cited by 45Fire effects on ecosystemsTree-ring climate responsesClimate variability and models

Interannual to decadal changes in area burned in Canada from 1781 to 1982 and the relationship to Northern Hemisphere land temperatures

Girardin, Martin P.·2007·Global Ecology and Biogeography

Abstract

Aim Temporal variability of annual area burned in Canada (AAB‐Can) from ad 1781 to 1982 is inferred from tree‐ring width data. Next, correlation analysis is applied between the AAB‐Can estimates and Northern Hemisphere (NH) warm season land temperatures to link recent interannual to decadal changes in area burned with large‐scale climate variations. The rationale in this use of tree rings is that annual radial increments produced by trees can approximate area burned through sensing climate variations that promote fire activity. Location The statistical reconstruction of area burned is at the scale of Canada. Methods The data base of total area burned per year in Canada is used as the predictand. A set of 53 multicentury tree‐ring width chronologies distributed across Canada is used as predictors. A linear model relating the predictand to the tree‐ring predictors is fitted over the period 1920−82. The regression coefficients estimated for the calibration period are applied to the tree‐ring predictors for as far back as 1781 to produce a series of AAB‐Can estimates. Results The AAB‐Can estimates account for 44.1% of the variance in the observed data recorded from 1920 to 1982 (92.2% after decadal smoothing) and were verified using a split sample calibration‐verification scheme. The statistical reconstruction indicates that the positive trend in AAB‐Can from c. 1970–82 was preceded by three decades during which area burned was at its lowest during the past 180 years. Correlation analysis with NH warm season land temperatures from the late 18th century to the present revealed a positive statistical association with these estimates. Main conclusions As with previous studies, it is demonstrated that the upward trend in AAB‐Can is unlikely to be an artefact from changing fire reporting practices and may have been driven by large‐scale climate variations.

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Crossref · 10.1111/j.1466-8238.2007.00321.x

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  • Fire activity is generally inversely correlated with vegetation productivity.

    “Variation in fire danger metrics have been shown to be closely related to fuel consumption34, and fire activity is generally inversely correlated with vegetation productivity47.”

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Authors
Girardin, M. P.
Affiliations
Canadian Forest Service (CA)
Corresponding author
Girardin, Martin P.
Venue
Global Ecology and Biogeography
Publisher
Wiley
Published
2007-08-14
Volume
16
Issue
5
Pages
557-566
ISSN
  • 1466-822X (ISSN-L)
  • 1466-8238
OpenAlex
W2096156479
Cited by
45
References
50
Citations by year
2026: 2 · 2025: 1 · 2024: 1 · 2023: 1 · 2021: 2 · 2020: 1 · 2018: 3 · 2017: 1 · 2016: 1 · 2015: 3 · 2014: 2 · 2013: 1 · 2012: 1
FWCI
5.57
Type
journal article
Language
en
Open access
closed
Locations
Global Ecology and Biogeography (publishedVersion)
Funders
  • Natural Resources Canada
  • Canadian Forest Service
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Fire effects on ecosystems
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Tree-ring climate responses
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
Keywords
burned area, fire history, tree-ring width, paleoclimate reconstruction, fire-climate relationships, Canada, interannual to decadal variability, large-scale climate variability

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