. Levels-of-growing-stock cooperative study in douglas-fir. J L J I I i_ r D. Francis. 0 40 60 80 100 120 140 160 Period mean basal area (ft2/acre) 180 0 40 60 80 100 120 140 160 Period mean basal area (ft2/acre) 180 Figure 15.—Periodic annual increment in gross basal area in relation to mean basal area for the growth period: (A) Skykomish, (B) Hoskins, (C) demons, and (D) Francis. Solid lines connect values for the same treatment (T) in successive growth periods; dashed lines connect values for different treatments in the same growth period (TP). Values shown for fixed percentage treatments (
. Levels-of-growing-stock cooperative study in douglas-fir. J L J I I i_ r D. Francis. 0 40 60 80 100 120 140 160 Period mean basal area (ft2/acre) 180 0 40 60 80 100 120 140 160 Period mean basal area (ft2/acre) 180 Figure 15.—Periodic annual increment in gross basal area in relation to mean basal area for the growth period: (A) Skykomish, (B) Hoskins, (C) demons, and (D) Francis. Solid lines connect values for the same treatment (T) in successive growth periods; dashed lines connect values for different treatments in the same growth period (TP). Values shown for fixed percentage treatments (1, 3, 5, and 7) only. 36. 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 Curtis, Robert O. cn; Marshall, David D. cn; Pacific Northwest Research Station (Portland, Or. ) cn. [Portland, Or. ] : U. S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
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