Initial effects of slashburning on the nutrient status of two sub-boreal spruce zone ecosystems
Document Type: Whole Book
Author(s): S. W. Taylor
Publication Year: 1987

Cataloging Information

Abies lasiocarpa; boreal forests; British Columbia; calcium; Canada; ecosystem dynamics; fine fuels; fire intensity; forest management; K - potassium; magnesium; mineral soils; nitrogen; nutrients; organic matter; phosphorus; Picea glauca; S - sulfur; slash; soils
Record Maintained By:
Record Last Modified: July 27, 2018
FRAMES Record Number: 38631
Tall Timbers Record Number: 13240
TTRS Location Status: In-file
TTRS Call Number: Fire File DDW
TTRS Abstract Status: Fair use, Okay, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.


A study was carried out to investigate the effects of slash-burning on the nutrient status of two Sub-Boreal. Spruce zone ecosystems in the west central interior of British Columbia. The slash, forest floor and mineral soil (0—15 cm depth) in these ecosystems were sampled for mass and nutrient content before and. after burning on a recently clearcut site. The forest floor and mineral soil were also sampled for nutrient concentrations nine months following burning. Average losses of organic matter, N, P, S. K, Ca, and Mg to the atmosphere due to slashburning were 11.1 kg/m2 and 563, 55, 87, 60, 252, and 16 kg/ha, respectively, from the mesic ecosystems and 11.5 kg/m2 and 345, 52, 74, 16, 289, and 177 kg/ha, respectively, from the subhygric/hygric ecosystems. These amounts corresponded to 51, 47, 41, 56, 40, 40 and 20%, respectively, of the total quantities of these nutrients in the slash. and forest floor in the mesic ecosystems before burning, and 25, 9, 13, 14, 5, 6 and 17%, respectively, of the quantities in the subhygric/hygric ecosystems. There were substantial losses of organic matter from coarse (>8 cm diam.) and fine (Li cm diam.) slash and the forest floor components. However, nutrient losses were largely attributed, to fine slash and forest floor consumption. Nutrient losses from the fine slash ap~eared to be independent of fire severity, although losses of most nutrients from the forest floor increased with fire severity; in plots in the mesic ecosystems which received moderate impact burns, and plots in. the subhygric/hygric ecosystems which received low and. moderate impact burns, net gains in forest floor Mg, K, and K and Ca content.

Taylor, S. W. 1987. Initial effects of slashburning on the nutrient status of two sub-boreal spruce zone ecosystems. British Columbia, The University of British Columbia.