Document


Title

Prediction of forest-floor moisture content on jack pine cutovers
Document Type: Journal Article
Author(s): Z. Chrosciewicz
Publication Year: 1989

Cataloging Information

Keyword(s):
  • Canada
  • DMC - CFFDRS Duff Moisture Code
  • forest floor moisture content
  • FWI - CFFDRS Fire Weather Index System
  • jack pine
  • Pinus banksiana
Region(s):
Partner Site(s):
Record Maintained By:
Record Last Modified: November 12, 2015
FRAMES Record Number: 12149

Description

Moisture contents of organic forest-floor materials were studied by strata on a clear-cut jack pine (Pinus banksiana Lamb.) site in relation to slash distribution and changes in both duff moisture code and fine fuel moisture code, the two weather-based components of the Canadian Forest Fire Weather Index System. The best-fitting curvilinear regression (Y=a+b/X) of the duff moisture code showed distinctive patterns of variation, so that both the surface and subsurface forest-floor strata were consistently moister under slash cover than in slash openings, and for each of these two slash conditions, the subsurface forest-floor strata were consistently moister than the surface strata. Combinations of these materials down to mineral soil showed intermediate moisture contents both in slash openings and under slash cover. The straight line regression (Y&#8194;=&#8194;a&#8194;+&#8194;bX) of the fine fuel moisture code was the best-fitting moisture content relationship for the surface forest-floor materials, but only in slash openings; under slash cover, the curvilinear regression (Y&#8194;=&#8194;a&#8194;+&#8194;b/X) of the duff moisture code was more suitable. The coefficients of correlation, r, as derived from these varied regressions, were all very highly significant at P&#8194;<&#8194;0.001.

Online Link(s):
Citation:
Chrosciewicz, Z. 1989. Prediction of forest-floor moisture content on jack pine cutovers. Canadian Journal of Forest Research 19(2):239-243.