. Elements of forestry. Forests and forestry. SOUTHERN ROCKY MOUNTAIN FOREST 335 pine, aspen and Engelmann spruce. Pure stands of the last- named species are common. Altogether the southern Rocky Mountain forest is charac- terized by exceedingly slow growth, dominance of yellow pine, difficulty of securing reproduction and the fact that the principal forest growth is limited to the higher elevations and northerly Fig. 62. — Open Grazing Land and Alpine Forest. Taken at elevation of 10,000 feet. Holy Cross National Forest, Colorado. Silvicultural Treatment. — The important question in
. Elements of forestry. Forests and forestry. SOUTHERN ROCKY MOUNTAIN FOREST 335 pine, aspen and Engelmann spruce. Pure stands of the last- named species are common. Altogether the southern Rocky Mountain forest is charac- terized by exceedingly slow growth, dominance of yellow pine, difficulty of securing reproduction and the fact that the principal forest growth is limited to the higher elevations and northerly Fig. 62. — Open Grazing Land and Alpine Forest. Taken at elevation of 10,000 feet. Holy Cross National Forest, Colorado. Silvicultural Treatment. — The important question in silvicultural management is the securing of a satisfactory reproduction when the forest is cut over in the government timber sales. The hot dry summers and the comparatively low annual rainfall render reproduction exceedingly difficult. In handling the yellow pine, the selection system is 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 Moon, Frederick Franklin, 1880-1929; Brown, Nelson Courtlandt, 1885-. New York J. Wiley
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