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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

Development and validation of fuel height models for terrestrial lidar – RxCADRE 2012

Eric M. Rowell A B D , Carl A. Seielstad A B and Roger D. Ottmar C
+ Author Affiliations
- Author Affiliations

A National Center for Landscape Fire Analysis, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.

B Department of Forest Management, College of Forestry and Conservation, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.

C USDA Forest Service, Pacific Wildland Fire Sciences Laboratory, 400 North 34th Street, Suite 201, Seattle, WA 98103, USA.

D Corresponding author. Email: eric.rowell@firecenter.umt.edu

International Journal of Wildland Fire 25(1) 38-47 https://doi.org/10.1071/WF14170
Submitted: 18 September 2014  Accepted: 23 September 2015   Published: 15 December 2015

Abstract

Terrestrial laser scanning (TLS) was used to collect spatially continuous measurements of fuelbed characteristics across the plots and burn blocks of the 2012 RxCADRE experiments in Florida. Fuelbeds were scanned obliquely from plot/block edges at a height of 20 m above ground. Pre-fire blocks were scanned from six perspectives and four perspectives for post-fire at ~2 cm nominal spot spacing. After processing, fuel height models were developed at one meter spatial resolution in burn blocks and compared with field measurements of height. Spatial bias is also examined. The resultant fuel height data correspond closely with field measurements of height and exhibit low spatial bias. They show that field measurements of fuel height from field plots are not representative of the burn blocks as a whole. A translation of fuel height distributions to specific fuel attributes will be necessary to maximise the utility of the data for fire modelling.

Additional keywords: fuels characterisation, grass fuels, prescribed fire, shrub fuels, spatially explicit, terrestrial laser scanner, TLS-based height metrics.


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