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Survival and growth response of white spruce stock types to site preparation in Alaska.
- Source :
-
Canadian Journal of Forest Research . Apr2011, Vol. 41 Issue 4, p793-809. 17p. - Publication Year :
- 2011
-
Abstract
- To identify suitable methods for reforestation, we evaluated the interacting effects of past disturbance, stock types, and site preparation treatments on white spruce ( Picea glauca (Moench) Voss) seedling survival and growth across a range of sites in Alaska. Replicated experiments were established in five regions. At each site, two complete installations differed in time since disturbance: 'new' units were harvested immediately before spring planting and 'old' units were harvested at least 3 years before planting. We compared mechanical scarification before planting, broadcast herbicide application during the fall before planting, and no site preparation with 1-year-old container-grown seedlings from two sources, 2-year-old bare-root transplants from two sources, and 3-year-old bare-root transplants. Seedlings were followed for 11 years on most sites. Based on meta-analyses, seedling survival increased 10% with herbicide application and 15% with mechanical scarification compared with no site preparation. Scarification and herbicide application increased seedling height by about 28% and 35%, respectively, and increased seedling volume by about 86% and 195%, respectively, compared with no site preparation. Soil temperature did not differ among site preparation methods after the first 7 years. Results suggest that white spruce stands may be successfully restored through a combination of vegetation control and use of quality planting stock. [ABSTRACT FROM AUTHOR]
- Subjects :
- *WHITE spruce
*FOREST site preparation
*REFORESTATION
*HERBICIDES
Subjects
Details
- Language :
- English
- ISSN :
- 00455067
- Volume :
- 41
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Canadian Journal of Forest Research
- Publication Type :
- Academic Journal
- Accession number :
- 65536361
- Full Text :
- https://doi.org/10.1139/x11-001