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Keyword: fuels

Rate of woody residue incorporation into Northern Rocky Mountain forest soils

Publications Posted on: January 05, 2012
The important properties contributed to forest soils by decayed wood in the Northern Rocky Mountains make it desirable to determine the time required to reconstitute such materials in depleted soils. The ratio of fiber production potential (growth) to total quantity of wood in a steady state ecosystem provides estimates varying from approximately 100 to 300 years, depending on habitat type, for replacement of decayed soil wood.

Logging residues under different stand and harvesting conditions, Rocky Mountains

Publications Posted on: December 07, 2011
Volume and characteristics of logging residues from 34 harvest areas are presented. Clearcuts and partial cuts logged to conventional utilization levels and to close utilization levels are included. Residue volumes ranged from almost 3, 600 ft3 /acre of wood 3-inches-plus down to about 550 ft3 /acre, depending on treatment. More than 60 percent of the residues were sound. A high proportion of residues were in pieces under 9 feet in length.

Synthesis of knowledge of extreme fire behavior: volume I for fire managers

Publications Posted on: November 16, 2011
The National Wildfire Coordinating Group definition of extreme fire behavior (EFB) indicates a level of fire behavior characteristics that ordinarily precludes methods of direct control action. One or more of the following is usually involved: high rate of spread, prolific crowning/spotting, presence of fire whirls, and strong convection column.

Using NDVI to assess departure from average greenness and its relation to fire business

Publications Posted on: November 07, 2011
A new satellite-derived vegetation greenness map, departure from average, is designed to compare current-year vegetation greenness with average greenness for the same time of year. Live-fuel condition as portrayed on this map, and the calculated 1,000-hour fuel moistures, are compared to fire occurrence and area burned in Montana and Idaho during the 1993 and 1994 fire seasons.

Multi-scale evaluation of the environmental controls on burn probability in a southern Sierra Nevada landscape

Publications Posted on: October 05, 2011
We examined the scale-dependent relationship between spatial fire likelihood or burn probability (BP) and some key environmental controls in the southern Sierra Nevada, California, USA. Continuous BP estimates were generated using a fire simulation model.

Use of artificial landscapes to isolate controls on burn probability

Publications Posted on: July 07, 2010
Techniques for modeling burn probability (BP) combine the stochastic components of fire regimes (ignitions and weather) with sophisticated fire growth algorithms to produce high-resolution spatial estimates of the relative likelihood of burning. Despite the numerous investigations of fire patterns from either observed or simulated sources, the specific influence of environmental factors on BP patterns is not well understood.

Coarse woody debris assay in northern Arizona mixed-conifer and ponderosa pine forests

Publications Posted on: June 11, 2010
Coarse woody debris (CWD) provides important ecosystem services in forests and affects fire behavior, yet information on amounts and types of CWD typically is limited. To provide such information, we sampled logs and stumps in mixed-conifer and ponderosa pine (Pinus ponderosa) forests in north-central Arizona. Spatial variability was prominent for all CWD parameters.

Comparing potential fuel treatment trade-off models

Publications Posted on: July 09, 2009
Understanding the trade~offs between short-term and long-term consequences\r\nof fire impacts on ecosystems is needed before a comprehensive fuels\r\nmanagement program can be implemented nationally. We are evaluating 3\r\npotential trade-off models at 8 locations in major U.S.

Chapter 16: Fire and nonnative plants-summary and conclusions

Publications Posted on: April 16, 2009
This volume synthesizes scientific information about interactions between fire and nonnative invasive plants in wildlands of the United States. If the subject were clear and simple, this volume would be short; obviously, it is not.

Chapter 15: Monitoring the effects of fire on nonnative invasive plant species

Publications Posted on: April 16, 2009
Monitoring, as defined by Elzinga and others (1998), is "the collection and analysis of repeated observations or measurements to evaluate changes in condition and progress towards meeting a management objective." Analyses of monitoring data may indicate that a project is meeting land management goals, or it may indicate that goals are not being met and management methods need to be adapted to reach them.