Print Friendly and PDF

Advanced Search Results Detail

Project ID: 11-1-8-4

Year: 2011

Date Started: 10/01/2011

Date Completed: 11/12/2015

Title: How Do Pile Age and Season of Burn Influence Combustion and Fire Effects?

Project Proposal Abstract: Typical hazardous fuel reduction treatments target small diameter trees for removal producing large amounts of woody material, much of which is piled and burned on site. Little is known about how physical characteristics and the environmental conditions under which piles are burned affects atmospheric emissions, carbon pools and fluxes, soils, and vegetation. We propose experimental pile burns in the Pacific Northwest (PNW) and the Southwest (SW) to provide managers in these regions with new information documenting the effects of burning piles of increasing age under different environmental conditions. Specifically we will measure combustion rate and duration, fuel consumption, charcoal production, burn intensity (above and below ground heat fluxes), changes in soil properties (nutrient levels and hydrophobicity), adjacent tree damage, surface vegetation responses, and changes in invasive species prevalence after pile burning. We will identify one location in each region that has undergone a typical "thin from below" silvicultural fuel treatment in the summer of 2011, construct, characterize, and instrument 100 piles (50 in the PNW and 50 in the SW), and burn replicate piles (n=5) at six-month intervals to test the effects on the above-listed measures of increasing age (0, 0.5, 1, 1.5, and 2 years since piling) under two different seasons (spring vs. fall). Deliverables will include peer-reviewed publications documenting the research results; manager-focused fact sheets, webinars, and field visits; archived data; and an enhanced version of the Piled Fuels Biomass and Emissions Calculator in a format that is compatible with the Interagency Fuel Treatment Decision Support System. Providing fuel and fire practitioners with detailed, quantitative information about the effects of pile burning will inform key management decisions about when to burn and how to minimize potential negative emissions, soil, carbon, and vegetation impacts.

Principal Investigator: Clinton S. Wright

Agency/Organization: Forest Service

Branch or Dept: PNW-Seattle-Managing Natural Disturbances

Other Project Collaborators




Branch or Dept

Agreements Contact

Christina T. Bui

Forest Service

PNW-Pacific Northwest Research Station

Budget Contact

Rebecca A. Slick

Forest Service

PNW-Pacific Northwest Research Station

Co-Principal Investigator

Alexander M. Evans

Forest Guild

Co-Principal Investigator

Karen A. Haubensak

Northern Arizona University

College of Engineering, Forestry & Natural Sciences

Federal Cooperator

Clinton S. Wright

Forest Service

PNW-Seattle-Managing Natural Disturbances

Project Locations

Fire Science Exchange Network










Wenatchee National Forest




Pueblo of Santa Clara

Project Deliverables

Final Report view or print

("Results presented in JFSP Final Reports may not have been peer-reviewed and should be interpreted as tentative until published in a peer-reviewed source.")

  ID Type Title
  go to website 1869 Government Publication Decomposition Rates for Hand-Piled Fuels
view or print go to website 3641 Journal Article Fire Management Today
view or print   7729 Photo Pile burning in Washington
view or print   7730 Photo Pile burning in New Mexico
view or print   7731 Photo Installing thermocouples
view or print   7732 Photo Reweighing piles
view or print   7718 Poster Science at Santa Clara: measuring the effects of slash pile burning and how fire effects change as p
view or print   7719 Poster Measuring the effects of slash pile burning and how fire effects change as piles age
view or print   7720 Poster Measuring the effects of slash pile burning and how fire effects change as piles age
view or print   7721 Poster Pile age and season of burning influence combustion and fire effects
view or print   7722 Invited Paper/Presentation Pile Age and Fire Effects
view or print   7723 Invited Paper/Presentation Measuring the effects of slash pile burning: collaborative science to inform management
view or print   7724 Invited Paper/Presentation Measuring the effects of slash pile burning
  go to website 7725 Website How Do Pile Age and Season of Burning Influence Combustion and Fire Effects?
view or print   7728 Field Demonstration/Tour Progress update to FERA newsletter subscribers

Supporting Documents

There are no supporting documents available for this project.

Convert PDF documents to an html document using Adobe's online conversion tool.
Download Adobe Acrobat Reader