. Development over 25 years of Douglas-fir, western hemlock, and western redcedar planted at various spacings on a very good site in British Columbia. Douglas fir British Columbia; Western hemlock British Columbia; Western redcedar British Columbia; Tree planting British Columbia. 20 25 0 5 Height (meters) Figure 9b—Average crown width, by attained mean height and by spacing, for Douglas-fir, western redcedar, and western hemlock in the 49-tree-plot trial. 10 15 20 25 For all three species, the apparent maximum attained average crown width was consist- ently related to spacing: Plantation Crow
. Development over 25 years of Douglas-fir, western hemlock, and western redcedar planted at various spacings on a very good site in British Columbia. Douglas fir British Columbia; Western hemlock British Columbia; Western redcedar British Columbia; Tree planting British Columbia. 20 25 0 5 Height (meters) Figure 9b—Average crown width, by attained mean height and by spacing, for Douglas-fir, western redcedar, and western hemlock in the 49-tree-plot trial. 10 15 20 25 For all three species, the apparent maximum attained average crown width was consist- ently related to spacing: Plantation Crown width, by species spacing Douglas-fir Cedar Hemlock (m) (m) (m) (m) At the closer spacings, this maximum average crown width was much greater than the average distance between trees—a result of crown overlap. The ratio of maximum crown width to spacing declined with increased spacing in a curvilinear relationship. At the spacing, the maximum crown width of Douglas-fir and western hemlock was about three times the average spacing; at the spacing, the maximum average crown width of Douglas-fir was about times the average spacing. 15. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Reukema, Donald L; Smith, J. Harry G; Pacific Northwest Research Station (Portland, Or. ). [Portland, Or. ] : U. S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
