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Record 1 of 1360
Alaska's Changing Fire Regime - Implications for the Vulnerability of Its Boreal Forests
External Online Source: doi:10.1139/X10-098
Author and Affiliation:
Kasischke, E. S.(Maryland Univ., Dept. of Geography, College Park, MD, United States)
Hoy, E. E.(Maryland Univ., Dept. of Geography, College Park, MD, United States)
Verbyla, D. L.(Alaska Univ., School of Natrual Resources and Agricultural Sciences, Fairbanks, AK, United States)
Rupp, T. S.(Alaska Univ., School of Natrual Resources and Agricultural Sciences, Fairbanks, AK, United States)
Duffy, P. A.(Alaska Univ., School of Natrual Resources and Agricultural Sciences, Fairbanks, AK, United States)
McGuire, A. D.(Geological Survey, Cooperative Fish and Wildlife Research Unit, Fairbanks, AK, United States)
Murphy, K. A.(National Wildlife Refuge System, Anchorage, AK, United States)
Jandt, R.(Bureau of Land Management, Alaska Fire Service, Wainwright, AK, United States)
Barnes, J. L.(National Park Service, Fairbanks, AK, United States)
Calef, M.(State Univ. of New York, Dept. of Geography and Planning, Albany, NY, United States) Show more authors
Abstract: A synthesis was carried out to examine Alaska s boreal forest fire regime. During the 2000s, an average of 767 000 ha/year burned, 50% higher than in any previous decade since the 1940s. Over the past 60 years, there was a decrease in the number of lightning-ignited fires, an increase in extreme lightning-ignited fire events, an increase in human-ignited fires, and a decrease in the number of extreme human-ignited fire events. The fraction of area burned from humanignited fires fell from 26% for the 1950s and 1960s to 5% for the 1990s and 2000s, a result from the change in fire policy that gave the highest suppression priorities to fire events that occurred near human settlements. The amount of area burned during late-season fires increased over the past two decades. Deeper burning of surface organic layers in black spruce (Picea mariana (Mill.) BSP) forests occurred during late-growing-season fires and on more well-drained sites. These trends all point to black spruce forests becoming increasingly vulnerable to the combined changes of key characteristics of Alaska s fire regime, except on poorly drained sites, which are resistant to deep burning. The implications of these fire regime changes to the vulnerability and resilience of Alaska s boreal forests and land and fire management are discussed.
Publication Date: Jun 28, 2010
Document ID:
20110002892
(Acquired Jan 31, 2011)
Subject Category: EARTH RESOURCES AND REMOTE SENSING
Document Type: Journal Article
Publication Information: Canadian Journal of Forest Research; Volume 40; 1313-1324
Publisher Information: NRC Research Press
Contract/Grant/Task Num: NNX06AF85G; NNG04GD25G; NSF DEB-0423442; PNW01-JV11261952-231; CSREES 2008-35615-18959
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD, United States
National Science Foundation; Arlington, VA, United States
Forest Service; Pacific Northwest Research Station; Fairbanks, AK, United States
Department of Agriculture; United States
Organization Source: Maryland Univ.; Dept. of Geography; College Park, MD, United States
Description: 12p; In English; Original contains black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: FOREST FIRES; LAND MANAGEMENT; SURFACE LAYERS; RESILIENCE; COMBUSTION; IGNITION; LIGHTNING; ALASKA; PRIORITIES; POLICIES; VULNERABILITY; TRENDS
Availability Source: Other Sources
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