Use of Wood Waste in Rehabilitation of Landings Constructed on Fine-Textured Soils, Central Interior British Columbia, Canada
Authors: Paul Sanborn1; Chuck Bulmer2; Dave Coopersmith3
Source: Western Journal of Applied Forestry, Volume 19, Number 3, July 2004 , pp. 175-183(9)
Publisher: Society of American Foresters
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Abstract:
Rehabilitation of temporary landings and roads constructed on fine-textured Alfisols must ameliorate poor soil structure, high bulk densities, and greatly reduced organic matter. A long-term field experiment in the central interior of British Columbia (BC) was begun in 1995 to compare soil properties and seedling growth on landings rehabilitated with three operationally feasible treatments: (1) incorporation of waste wood chips (140 t/ha, oven-dry basis), supplemented with 600 kg N/ha; (2) subsoiling; and (3) shallow tillage combined with recovery and spreading of topsoil. After 4 years, soil bulk density at 7–14 cm depth was lowest in the chip incorporation treatment. Although total C, N, and S, and mineralizable N concentrations were highest in the topsoil recovery treatment, the chip incorporation treatment had the highest 3-year growth rates of hybrid white spruce (Picea glauca × engelmannii). Foliar analyses indicated that macro- and micronutrient concentrations were generally adequate, with only S and Mg being of concern. Establishment of paper birch (Betula papyrifera) did not succeed due to severe rodent damage to seedlings, perhaps encouraged by rapid and dense revegetation by seeded agronomic legumes. Silviculturists should consider treatments involving incorporation of chipped wood wastes, with appropriate supplementary N fertilization, in rehabilitation of access structures on fine-textured soils in the BC central interior. West. J. Appl. For. 19(3):175–183.Keywords: Hybrid white spruce; paper birch; soil nutrients; bulk density; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; natural resources; natural resource management
Document Type: Regular article
Affiliations: 1: Ecosystem Science and Management Program University of Northern British Columbia 3333 University Way Prince George BC Canada V2N 4Z9 Phone: (250) 960-6661;, Fax: (250) 960-5539, Email: sanborn@unbc.ca 2: Kalamalka Research Station, BC Ministry of Forests 3401 Reservoir Road Vernon BC Canada V1B 2C7 3: 6325 Chatham Street West Vancouver BC Canada V7W 2E1
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