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Estimating wildland fire rate of spread in a spatially nonuniform environment

Estimating rate of fire spread is a key element in planning for effective fire control. Land managers use the Rothermel spread model, but the model assumptions are violated when fuel, weather, and topography are nonuniform. This paper compares three averaging techniques--arithmetic mean of spread rates, spread based on mean fuel conditions, and harmonic mean of spread...

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Author(s):

Francis M Fujioka

Year:

1985

Keywords:

Fire spread, Jensen's inequality, fire behavior, harmonic mean, surface area-to-volume ratio

Source:

Forest Science. 31(1): 21-29

Wildland fire probabilities estimated from weather model-deduced monthly mean fire danger indices

The National Fire Danger Rating System indices deduced from a regional simulation weather model were used to estimate probabilities and numbers of large fire events on monthly and 1-degree grid scales. The weather model simulations and forecasts are ongoing experimental products from the Experimental Climate Prediction Center at the Scripps Institution of Oceanography...

Author(s):

Haiganoush K. Preisler; Shyh-Chin Chen; Francis Fujioka; John W. Benoit; Anthony L. Westerling

Year:

2008

Keywords:

FWI, model appraisal, mutual information, NFDRS, semi-parametric logistic regression, spline functions

Source:

International Journal of Wildland Fire 17(3): 305–316

Fine fuel moisture measured and estimated in dead Andropogon virginicus in Hawaii

Fuel moisture estimates generated by the National Fire-Danger Rating System procedure were compared with actual fuel moisture measurements determined from laboratory analysis. Meteorological data required for the NFDRS procedure were collected at two heights to assess the effect of temperature and humidity lapse rates. Standard measurements gave the best results, but...

Author(s):

Francis M. Fujioka

Year:

1976

Keywords:

fuel moisture estimation, National Fire Danger Rating System, hygrometrix, xeric hygrometers, sampling

Source:

Res. Note PSW-RN-317. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p

Nontimber forest products in the United States: an analysis for the 2015 National Sustainable Forest Report

Worldwide, forest plants and fungi that are harvested for their nontimber products are critical for the health of the ecosystems and the well-being of people who benefit from the harvest. This document provides an analysis of the volumes and values of nontimber forest products in the United States. It presents estimates of the annual harvest for a number of product...

Author(s):

James Chamberlain; Aaron Teets; Steve Kruger

Year:

2018

Keywords:

commerce, harvest values, harvest volumes, nontimber forest products, sustainability.

Source:

e-Gen. Tech. Rep. SRS-229, Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station

Biomass relations for components of five Minnesota shrubs.

Presents equations for estimating biomass of six components on five species of shrubs common to northeastern Minnesota. Regression analysis is used to compare the performance of three estimators of biomass.

Author(s):

Richard R. Buech; David J. Rugg

Year:

1995

Keywords:

biomass estimation, tall shrubs, prediction equations, biomass equations, allometric relations

Source:

Research Paper NC-325. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

Evaluation of funnel traps for estimating tree mortality and associated population phase of spruce beetle in Utah

Although funnel traps are routinely used to manage bark beetles, little is known regarding the relationship between trap captures of spruce beetle (Dendroctonus rufipennis Kirby) and mortality of Engelmann spruce (Picea engelmannii Parry ex Engelm.) within a 10 ha block of the trap. Using recursive partitioning tree analyses, rules...

Author(s):

E. Matthew Hansen; Barbara J. Bentz; A. Steven Munson; James C. Vandygriff; David L. Turner

Year:

2006

Keywords:

funnel traps, bark beetles, spruce beetles, Dendroctonus rufipennis, Engelmann spruce, Picea engelmannii

Source:

Canadian Journal of Forest Research. 36: 2574-2584.

Fifty-Year Durability Evaluation of Posts Treated with Industrial Wood Preservatives

Long-term durability data are needed to improve service life estimates for treated wood products used as critical structural supports in industrial applications. This article reports the durability of longleaf pine (Pinus palustris) posts pressure treated with ammoniacal copper arsenate (ACA), chromated copper arsenate (CCA), creosote, or...

Author(s):

Stan T. Lebow; Patricia Lebow; Bessie Woodward; Grant T. Kirker; Rachel Arango

Year:

2015

Keywords:

Posts, durability, 50 years, preservative treatment, ammoniacal copper arsenate, chromated copper arsenated, creosote, pentachlorophenol

Source:

Forest Products Journal

Wood Use in the U.S. Pallet and Container Industry: 1995

This report from the Center for Forest Products Marketing and Management at Virginia Tech provides results of a study ofwood material use in the pallet and container industry (Standard Industrial Classification codes 2441, 2448, and 2449). The report furnishes estimates of industry-wide use ofvarious wood materials (i.e., solid hardwood, solid softwood,oriented strand...

Author(s):

Vijay S. Reddy; Robert J. Bush; Matthew S. Bumgardner; James L. Chamberlain; Philip A. Araman

Year:

1997

Keywords:

Source:

(Executive Summary Only). Center for Forest Products Marketing and Management - Virginia Tech. 17 pp.

Modeling below-ground biomass to improve sustainable management of Actaea racemosa, a globally important medicinal forest product

Non-timber forest products, particularly herbaceous understory plants, support a multi-billion dollar industry and are extracted from forests worldwide for their therapeutic value. Tens of thousands of kilograms of rhizomes and roots of Actaea racemosa L., a native Appalachian forest perennial, are harvested every year and used for the treatment of...

Author(s):

James L. Chamberlain; Gabrielle Ness; Christine J. Small; Simon J. Bonner; Elizabeth B. Hiebert

Year:

2013

Keywords:

Appalachian hardwood forests, Black cohosh, Forest inventory, Medicinal plants, Non-timber forest products, Wild-harvest

Source:

Forest Ecology and Management 293:1–8

A simulation of probabilistic wildfire risk components for the continental United States

This simulation research was conducted in order to develop a large-fire risk assessment system for the contiguous land area of the United States. The modeling system was applied to each of 134 Fire Planning Units (FPUs) to estimate burn probabilities and fire size distributions. To obtain stable estimates of these quantities, fire ignition and growth was simulated for...