by British Columbia, Ministry of Forests Research Program in Victoria .
Written in English
Includes bibliographical references (p. 19-20).
|Statement||Gordon D. Nigh.|
|Series||Research report ;, 10, Research report (British Columbia. Ministry of Forests. Research Branch) ;, 10.|
|Contributions||British Columbia. Ministry of Forests. Research Branch.|
|LC Classifications||SD397.D7 N54 1997|
|The Physical Object|
|Pagination||iv, 20 p. ;|
|Number of Pages||20|
|LC Control Number||98160553|
Quebec,a need existed for growth intercept models for these species. The only available growth intercept models have been developed in British Columbia for coastal Douglas-fir (Pseudotsuga menziesii[Mirb.] Franco sii;Nigh Growth intercept models for black spruce, jack pine and balsam fir in Quebec by Daniel Mailly1,2 and Mélanie Gaudreault1. This field guide insert presents the growth intercept models and tables available for use in the interior of British Columbia. Included are growth intercept models and tables for: Lodgepole Pine, Interior Spruce, Douglas-fir, Western Hemlock, Subalpine Fir, Western Redcedar, and Western Larch. Included are growth intercept models and tables for: Western Hemlock, Sitka Spruce, and Douglas-fir. The Options section notes any options and alternative models or model formulations, and provides references that are available from the above address. The tables are designed for rough estimation of site index in the field. impede the recovery of old-growth characteristics (O'Hara et al. , Teraoka and Keyes ). Second-growth stands are commonly comprised of dense, even-aged Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and redwood stump sprouts, with Author: Phillip J. van Mantgem, Jason R. Teraoka, David H. LaFever, Laura B. Lalemand.
The primary objective of this study was to develop a model for Douglas-fir height growth for application in an individual tree, distance-independent growth model (Munro, ). A secondary objective was to evaluate different model forms and measures of competition and position for their ability to characterize height growth of by: For the coastal variety of Douglas‐fir, we found positive correlations of ring width with summer precipitation and temperature of the preceding winter, indicating that growth of coastal populations was limited by summer dryness and that photosynthesis in winter contributed to by: Graduation date: A mathematical model has been developed to describe the growth of individual Douglas-fir trees under a variety of stand conditions and management schedules. Fertilizer response and percent response after two years were examined, according to mapped and measured biogeoclimatic variables, for 71 Douglas-fir installations in the coastal Pacific Northwest. Paired-tree installations consisted of 12–20 pairs of Douglas-fir trees with one tree fertilized with urea at kg Nha − by: 7.
This analysis uses “breast height age ” to determine a “growth intercept ” that is then used to calculate a site index for each sample of browsed and unbrowsed trees. The site index (height at BHA=50) was calculated for samples of browsed and unbrowsed within each plot using a growth intercept model for coastal Douglas-Fir developed by Gordan Nigh for the BC Ministry of Forests Research Program. Comparison of height growth and growth intercept models of jack pine plantations and natural stands in northern Ontario. A growth intercept for coastal Douglas fir. B.C. our old-growth coastal Douglas-fir forests. Another modern threat to these forests is the suppression of natural forest fires. Mature Douglas-fir trees have thick bark, which protects them from the low-intensi-ty fires that used to occur here about every to fires maintained the dominance of Douglas-fir by controllingFile Size: KB. This analysis uses “breast height age ” to determine a “growth intercept ” that is then used to calculate a site index for each sample of browsed and unbrowsed trees. The site index (height at BHA=50) was calculated for samples of browsed and unbrowsed within each plot using a growth intercept model for coastal Douglas-Fir developed by.