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Title: Characterizing and mapping forest fire fuels using ASTER imagery and gradient modeling

Author: Falkowski, Michael J.; Gessler, Paul E.; Morgan, Penelope; Hudak, Andrew T.; Smith, Alistair M. S.

Date: 2005

Source: Forest Ecology and Management. 217(2-3): 129-146.

Publication Series: Journal/Magazine Article (JRNL)

Description: Land managers need cost-effective methods for mapping and characterizing forest fuels quickly and accurately. The launch of satellite sensors with increased spatial resolution may improve the accuracy and reduce the cost of fuels mapping. The objective of this research is to evaluate the accuracy and utility of imagery from the advanced spaceborne thermal emission and reflection radiometer (ASTER) satellite sensor, and gradient modeling, for mapping fuel layers for fire behavior modeling with FARSITE and FLAMMAP. Empirical models, based upon field data and spectral information from an ASTER image, were employed to test the efficacy of ASTER for mapping and characterizing crown closure and crown bulk density. Surface fuel models (National Forest Fire Laboratory (NFFL) 1–13) were mapped using a classification tree based upon three gradient layers; potential vegetation type, cover type, and structural stage. The final surface fuel model layer had an overall accuracy of 0.632 (KHAT = 0.536). Results for the canopy fuel empirical models developed here suggest that vegetation indices incorporating visible wavelengths (i.e. the green red vegetation index (GRVI)) are suitable for predicting crown closure and crown bulk density (r2 = 0.76. and 0.46, respectively).

Keywords: forest fire, fuels, remote sensing, gradient modeling, ASTER, fuel model, crown bulk density, crown closure

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

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Falkowski, Michael J.; Gessler, Paul E.; Morgan, Penelope; Hudak, Andrew T.; Smith, Alistair M. S. 2005. Characterizing and mapping forest fire fuels using ASTER imagery and gradient modeling. Forest Ecology and Management. 217(2-3): 129-146.

 


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