Fire behavior and effects in aspen-northern hardwood stands
Document Type: Conference Proceedings
Author(s): Martin E. Alexander; Rodney W. Sando
Editor(s): Donald C. MacIver; H. Auld; R. Whitewood
Publication Year: 1989

Cataloging Information

  • aspen-northern hardwoods
  • experimental fire
  • FWI - CFFDRS Fire Weather Index System
  • Lake States
  • Minnesota
  • tree mortality
  • Wisconsin
Partner Site(s):
Record Maintained By:
Record Last Modified: March 27, 2018
FRAMES Record Number: 10929


Six experimental fires were carried out within pure trembling aspen and mixed deciduous stands in the US Lake States region during both spring and late fall (ie, leafless stage). Available surface fuel loads averaged 2.5 t/ha. High to extreme burning conditions prevailed as determined by the Canadian Forest Fire Weather Index (FWI) System. Head fire spread rates varied from 1.5 to 8.8 m/min and were highly correlated with the Initial Spread Index component of the FWI System (r=0.91). Frontal fire intensities ranged from 115 to 672 kW/m. Extensive mortality was observed in trees less than 7.6 cm in diameter at breast height (DBH) while overstory stems greater than 15 cm dbh were seldom affected. Most shrub species were readily top-killed by fire but quickly resprouted. The total number of woody understory stems (deciduous shrubs and small trees) often increased following the fires.

Online Link(s):
Alexander, Martin E.; Sando, Rodney W. 1989. Fire behavior and effects in aspen-northern hardwood stands. Pages 263-274. In: MacIver, D. C.; Auld, H.; Whitewood, R., editors. Proceedings of the 10th Conference on Fire and Forest Meteorology, April. 17-21, 1989, Ottawa, Ontario. Ottawa, Ontario: Canadian Forest Service and Environment Canada.