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RESEARCH ARTICLE
Contents Vol 16(3)

Analysis of Alaskan burn severity patterns using remotely sensed data

Paul A. Duffy A E , Justin Epting B , Jonathan M. Graham C , T. Scott Rupp A and A. David McGuire D
+ Author Affiliations
- Author Affiliations

A Ecological Dynamics Modeling Group, Department of Forest Sciences, University of Alaska, Fairbanks, AK 99775, USA.

B Center for Applied Biodiversity Science, Conservation International, Washington, DC 20036, USA.

C Department of Mathematical Sciences, University of Montana, Missoula, MT 59812, USA.

D US Geological Survey, Alaska Cooperative Fish and Wildlife Research Unit, University of Alaska, Fairbanks, AK 99775, USA.

E Corresponding author. Email: paul.duffy@uaf.edu

International Journal of Wildland Fire 16(3) 277-284 https://doi.org/10.1071/WF06034
Submitted: 14 March 2006  Accepted: 17 October 2006   Published: 3 July 2007

Abstract

Wildland fire is the dominant large-scale disturbance mechanism in the Alaskan boreal forest, and it strongly influences forest structure and function. In this research, patterns of burn severity in the Alaskan boreal forest are characterised using 24 fires. First, the relationship between burn severity and area burned is quantified using a linear regression. Second, the spatial correlation of burn severity as a function of topography is modelled using a variogram analysis. Finally, the relationship between vegetation type and spatial patterns of burn severity is quantified using linear models where variograms account for spatial correlation. These results show that: 1) average burn severity increases with the natural logarithm of the area of the wildfire, 2) burn severity is more variable in topographically complex landscapes than in flat landscapes, and 3) there is a significant relationship between burn severity and vegetation type in flat landscapes but not in topographically complex landscapes. These results strengthen the argument that differential flammability of vegetation exists in some boreal landscapes of Alaska. Additionally, these results suggest that through feedbacks between vegetation and burn severity, the distribution of forest vegetation through time is likely more stable in flat terrain than it is in areas with more complex topography.

Additional keywords: Alaska fire, fire variograms, normalised burn ratio, spatial ANOVA.


Acknowledgements

This work was partially supported by the Joint Fire Science Program. The University of Alaska, School of Natural Resources and Agricultural Sciences Doctoral Fellowship supported P. A. Duffy during this work. A portion of this work was also supported by the Center for Global Change and Arctic System Research. Thanks to Terry Chapin and Dave Schimel for thoughtful reviews. Randi Jandt of the Alaska Fire Service, and Jennifer Allen and Brian Sorbel of the National Park Service also provided valuable assistance.


References


Bessie WC , Johnson EA (1995) The relative importance of fuels and weather on fire behavior in subalpine forests. Ecology  76, 747–762.
| Crossref | GoogleScholarGoogle Scholar | Csiszar I, Justice CO, McGuire AD, Cochrane MA, Roy DP, et al. (2004) Land use and fires. In ‘Land Change Science: Observing, Monitoring, and Understanding Trajectories of Change on the Earth's Surface’. (Eds G Gutman, AC Janetos, CO Justice, EF Moran, JF Mustard, RR Rindfuss, D Skole, BL Turner II, MA Cochrane) pp. 329–350. (Kluwer Academic Publishers: Dordrecht, Netherlands)

Duffy PA, Walsh JE, Graham JM, Mann DH , Rupp TS (2005) Impacts of large-scale atmospheric-ocean variability on Alaskan fire season severity. Ecological Applications  15, 1317–1330.

| Crossref | IPCC (2001) ‘Climate Change 2001: Technical Summary of the Working Group I Report.’ WMO/UNEP. (Cambridge University Press: Cambridge)

Johnson RA, Verrill S , Moore DH (1987) Two-sample rank tests for detecting changes that occur in a small proportion of the treated population. Biometrics  43, 641–655.
| Crossref | GoogleScholarGoogle Scholar | PubMed | Key CH, Benson NC (2004) Landscape assessment: ground measure of severity, the composite burn index; and remote sensing of severity, the normalized burn ratio. In ‘FIREMON: Fire Effects Monitoring and Inventory System’. (Eds DC Lutes, RE Keane, JF Caratti, CH Key, NC Benson, LJ Gangi) pp. XX–XX. USDA Forest Service General Technical Report RMRS-GTR-XXX. (U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station: Ogden, UT)

Lecomte N, Simard M, Bergeron Y, Larouche A, Asnong H , Richard PJH (2005) Effects of fire severity and initial tree composition on understory vegetation dynamics in a boreal landscape inferred from a chronosequence and paleoecological data. Journal of Vegetation Science  16, 665–674.
| Crossref | GoogleScholarGoogle Scholar | McGuire AD, Apps M, Chapin FS, III, Dargaville R, Flannigan MD, et al. (2004) Land cover disturbances and feedbacks to the climate system in Canada and Alaska. In ‘Land Change Science: Observing, Monitoring, and Understanding Trajectories of Change on the Earth's Surface’. (Eds G Gutman, AC Janetos, CO Justice, EF Moran, JF Mustard, RR Rindfuss, D Skole, BL Turner II, MA Cochrane) pp. 139–161. (Kluwer Adademic Publishers: Dordrecht, Netherlands)

Melillo JM, McGuire AD, Kicklighter DW, Moore B, Vorosmarty CJ , Schloss AL (1993) Global climate change and terrestrial net primary production. Nature  363, 234–240.
| Crossref | GoogleScholarGoogle Scholar | Payette S (1992) Fire as a controlling process in the North American boreal forest. In ‘A Systems Analysis of the Global Boreal Forest’. (Eds HH Shugart, R Leemans, GB Bonan) pp. 145–169. (Cambridge University Press: Cambridge, UK)

Ribeiro PJ Jr, Diggle PJ (2001) geoR: A package for geostatistical analysis. R-News 1(2). Available at http://cran.r-project.org/doc/Rnews [verified date].

Smyth GK , Verbyla AP (1996) A conditional approach to residual maximum likelihood estimation in generalized linear models. Journal of the Royal Statistical Society B  58, 565–572.
Van Cleve K, Viereck LA (1983) A comparison of successional sequences following fire on permafrost-dominated and permafrost-free sites in interior Alaska. Permafrost: Fourth International Conference, Proceedings, 1286–1291.

Van Wagner CE (1977) Effect of slope on fire spread rate. Canadian Forestry Service, Bimonthly Research notes  33, 7–8.
Viereck LA, Dyrness CT, Batten AR, Wenzlick KJ (1992) The Alaska (USDA Forest Service, Pacific Northwest Research Station: Portland, OR)

Yarie J (1981) Forest fire cycles and life tables: a case study from interior Alaska. Canadian Journal of Forest Research  11, 554–562.


Zackrisson O (1977) Influence of forest fires on the North Swedish boreal forest. Oikos  29, 22–32.
| Crossref | GoogleScholarGoogle Scholar |

Zasada JC, Norum RA, Van Veldhuizen RM , Teutsch CE (1983) Artificial regeneration of trees and tall shrubs in experimentally burned upland black spruce/feather moss stands in Alaska. Canadian Journal of Forest Research  13, 903–913.