Canadian Forest Service Publications

Prescribed fire -- Evaluation of hazard abatement. 1968. Muraro, S.J., Proceedings: Special paper prepared for the Congress of the International Union of Forest Research Organizations. September 4-9, 1967, Munich, Germany. Government of Canada, Department of Forestry and Rural Development, Headquarters, Ottawa. Departmental Publication 1231. 28 p.

Year: 1968

Issued by: Pacific Forestry Centre

Catalog ID: 27879

Language: English

Series: Departmental Publication (CFS - Edmonton)

Availability: PDF (download)

Mark record


Four adjacent areas of cedar-hemlock slash (50°45'N, 118°40'W, elevation 3280 ft. a.s.1.) were burned to evaluate prescribed burning as a hazard abatement technique. Sampling intensity was three octagonal plots, perimeter 240 ft., per 2 acres of burn. The efficacy of various parameters are discussed. Fuel loading qualified by maximum size of fuel components appears to be the best means of differentiating the hazard in fuel complexes. Fire impact integrators, as used, were not an effective means of measuring fire intensity. A formula is presented, indicating that the benefit/cost ratio is optimum in 1-year-old cedar-hemlock slash when the slash hazard index is 11. At a slash hazard index of 9 little abatement is achieved; when the index is higher than 12, with winds in excess of 5 mph., the cost of ensuring confinement may reduce the benefit/cost ratio to less than unity.