. Twenty-year growth of thinned and unthinned ponderosa pine in the Methow Valley of northern Washington. Period. 62 125 250 500 Unthinned TREES PER ACRE Figure 11.—Average annual net cubic-volume increment ot ponderosa pine during the first, second, third, and fourth 5-year growth periods, and increment on a comparable number of the best well-distributed trees in the unthinned stand. YEARS SINCE THINNING 0 5 10 15 20 (25) (30) 2600 -. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these
. Twenty-year growth of thinned and unthinned ponderosa pine in the Methow Valley of northern Washington. Period. 62 125 250 500 Unthinned TREES PER ACRE Figure 11.—Average annual net cubic-volume increment ot ponderosa pine during the first, second, third, and fourth 5-year growth periods, and increment on a comparable number of the best well-distributed trees in the unthinned stand. YEARS SINCE THINNING 0 5 10 15 20 (25) (30) 2600 -. 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- cn; Pacific Northwest Forest and Range Experiment Station (Portland, Or. ) cn. Portland, Or. : Pacific Northwest Forest and Range Experiment Station, U. S. Dept. of Agriculture, Forest Service
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
