. Growth and yield of western hemlock in the Pacific Northwest following thinning near the time of initial crown closing. Forest thinning Northwest, Pacific; Trees Northwest, Pacific Growth; Western hemlock Northwest, Pacific. Net basal area (m2/ha) 10 20 30 40 50 60 70. 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 Net basal area (ft2/acre) Figure 11.—Gross annual cubic-foot volume increment for combined treatments and control, by level of basal area and age, at Cascade Please note that these images are extracted from scanned page images that may have been digitally enhan
. Growth and yield of western hemlock in the Pacific Northwest following thinning near the time of initial crown closing. Forest thinning Northwest, Pacific; Trees Northwest, Pacific Growth; Western hemlock Northwest, Pacific. Net basal area (m2/ha) 10 20 30 40 50 60 70. 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 Net basal area (ft2/acre) Figure 11.—Gross annual cubic-foot volume increment for combined treatments and control, by level of basal area and age, at Cascade 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 Hoyer, Gerald E. dn; Swanzy, Jon D. cn; Pacific Northwest Research Station (Portland, Or. ) cn. [Portland, Or. ] : U. S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station
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