Climatic influences on interannual variability in regional burn severity across western US forests
- 1 January 2017
- journal article
- research article
- Published by CSIRO Publishing in International Journal of Wildland Fire
- Vol. 26 (4), 269-275
- https://doi.org/10.1071/wf16165
Abstract
Interannual variability in burn severity is assessed across forested ecoregions of the western United States to understand how it is influenced by variations in area burned and climate during 1984–2014. Strong correlations (|r| > 0.6) between annual area burned and climate metrics were found across many of the studied regions. The burn severity of individual fires and fire seasons was weakly, but significantly (P < 0.05), correlated with burned area across many regions. Interannual variability in fuel dryness evaluated with fuel aridity metrics demonstrated weak-to-moderate (|r| >0.4) relationships with regional burn severity, congruent with but weaker than those between climate and area burned for most ecoregions. These results collectively suggest that irrespective of other factors, long-term increases in fuel aridity will lead to increased burn severity in western United States forests for existing vegetation regimes.Keywords
This publication has 52 references indexed in Scilit:
- Is fire severity increasing in the Sierra Nevada, California, USA?International Journal of Wildland Fire, 2014
- Trends in Wildfire Severity: 1984 to 2010 in the Sierra Nevada, Modoc Plateau, and Southern Cascades, California, USAFire Ecology, 2012
- Long-term perspective on wildfires in the western USAProceedings of the National Academy of Sciences of the United States of America, 2012
- How Robust Are Burn Severity Indices When Applied in a New Region? Evaluation of Alternate Field-Based and Remote-Sensing MethodsRemote Sensing, 2012
- Quantifying the fire regime distributions for severity in Yosemite National Park, California, USAInternational Journal of Wildland Fire, 2011
- Forest responses to increasing aridity and warmth in the southwestern United StatesProceedings of the National Academy of Sciences of the United States of America, 2010
- Climate and wildfire area burned in western U.S. ecoprovinces, 1916–2003Ecological Applications, 2009
- Quantitative Evidence for Increasing Forest Fire Severity in the Sierra Nevada and Southern Cascade Mountains, California and Nevada, USAEcosystems, 2008
- A Project for Monitoring Trends in Burn SeverityFire Ecology, 2007
- Warming and Earlier Spring Increase Western U.S. Forest Wildfire ActivityScience, 2006