. Protecting and enhancing America's forests and rangelands : 1986 research accomplishments. Forests and forestry United States; Rangelands United States. Managing Timber in the Rockies Guidelines for forest managers and silviculturists overseeing spruce- fir forests in the central and southern Rocky Mountains, and Front Range ponderosa pine and lodgepole pine in the central Rocky Mountains are now available as three reports from the Rocky Mountain Station. The reports offer suggestions on developing even- and/or uneven-aged cutting practices for converting old- and mixed-growth stands into ma
. Protecting and enhancing America's forests and rangelands : 1986 research accomplishments. Forests and forestry United States; Rangelands United States. Managing Timber in the Rockies Guidelines for forest managers and silviculturists overseeing spruce- fir forests in the central and southern Rocky Mountains, and Front Range ponderosa pine and lodgepole pine in the central Rocky Mountains are now available as three reports from the Rocky Mountain Station. The reports offer suggestions on developing even- and/or uneven-aged cutting practices for converting old- and mixed-growth stands into managed stands for a variety of resource needs. Guidelines consider stand conditions, succession, windfall risk, and insect and disease susceptibility. Suggested cutting practices are designed to integrate timber production with increased water yield, maintained water quality, improved wildlife habitat, and enhanced opportunities for recreation and scenic values. No one silvicultural system or cutting method meets all resource needs. Cutting small openings provides maximum yields of timber at minimum costs, promotes the largest increases in water production without serious reduction in quality, produces diversity in food supply and cover favored by many wildlife species, and is compatible with the development of ski trails and homesites. Shelterwood cuts also provide maximum timber yields over the same time interval, but at increased costs; they produce a wide range of wildlife habitats, but with less forage than openings and less cover than uncut forests. After shelterwood cutting, water yields are increased over natural streamflow but less than with clearcutting small openings. Shelterwood cutting provides a partial retention of the forest landscape, but only when the overstory is retained for a long time. Group selection and shelterwood cutting methods impact the same resource values as patch or strip clearcuts, but the former are more complex and expensive to implement. Not a
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