. Height growth and site index curves for managed, even-aged stands of ponderosa pine in the Pacific Northwest. Site index (Forestry) Northwest, Pacific; Ponderosa pine Northwest, Pacific. If / 180 160 140 120 £ 100 U X •J < o 80 60 40 - 20 -. _L _i_ _ _i_ 20 40 60 80 100 BREAST - HIGH AGE (years! 120 140 Figure 9.—Height growth curves for managed even-aged stands of ponderosa pine in the Pacific Northwest. Solid lines connect decadal points derived from the unsmoothed basic data regres- sions of HT - = a + b(SI - ). Dashed lines represent smooth curves from the estimating equations.
. Height growth and site index curves for managed, even-aged stands of ponderosa pine in the Pacific Northwest. Site index (Forestry) Northwest, Pacific; Ponderosa pine Northwest, Pacific. If / 180 160 140 120 £ 100 U X •J < o 80 60 40 - 20 -. _L _i_ _ _i_ 20 40 60 80 100 BREAST - HIGH AGE (years! 120 140 Figure 9.—Height growth curves for managed even-aged stands of ponderosa pine in the Pacific Northwest. Solid lines connect decadal points derived from the unsmoothed basic data regres- sions of HT - = a + b(SI - ). Dashed lines represent smooth curves from the estimating equations. 14 GPO 98 5-64 1. 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 Barrett, James W. (James Willis), 1922-; Pacific Northwest Forest and Range Experiment Station (Portland, Or. ); United States. Forest Service. cn. Portland, Or. : Pacific Northwest Forest and Range Experiment Station, U. S. Dept. of Agriculture
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