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International Journal of Wildland Fire International Journal of Wildland Fire Society
Journal of the International Association of Wildland Fire
RESEARCH ARTICLE

Site environment characterization of downed woody fuels in the Rincon Mountains, Arizona: regression tree approach

Erick Sánchez-Flores A and Stephen R. Yool A B
+ Author Affiliations
- Author Affiliations

A Department of Geography and Regional Development, The University of Arizona, Harvill Building, Box #2, Tucson, AZ 85721, USA.

B Corresponding author. Telephone: +1 520 621 8549; fax: +1 520 621 2889; email: yools@email.arizona.edu

International Journal of Wildland Fire 13(4) 467-477 https://doi.org/10.1071/WF04015
Submitted: 10 March 2004  Accepted: 4 October 2004   Published: 15 December 2004

Abstract

Characterization of forest fuels is key to successful implementation of any fire management system. Great strides have been made in the characterization of forest canopy fuels by the use of remote sensing technology. Remote sensing of surface fuels is, however, limited by the physical intervention of the overlaying canopy. This limitation underscores the importance of exploring alternative approaches that relate site environment characteristics to the production and accumulation of understory fuels. This study predicts downed woody fuel loadings based on variables such as topography, fire history, and vegetation type in the forested area of the Rincon Mountains in southern Arizona. We used classification and regression trees (CART) to make these predictions. Results show that fine woody fuel loadings are predicted best by vegetation type and slope. Coarse woody fuels are predicted best by differences in elevation.

Additional keywords: downed woody fuels; fire history; regression tree; topography.


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