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Stand Changes on a Southwestern Mixed Conifer Watershed after Timber Harvesting

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An old-growth, mixed conifer stand in eastern Arizona was operationally harvested by diameter-limit and selection methods. The diameter-limit treatment severely reduced the conifer component of the remaining stand. Losses of advance regeneration from both harvesting methods were heavy. The diameter-limit area was left understocked, but in six years a well-stocked young aspen (Populus tremuloides) stand regenerated from sprouts; conifer numbers and stocking also increased. The conversion is less desirable than the old stand by current conifer production guidelines but can be beneficial for wildlife and for water resources. The selection area remained satisfactorily stocked with overstory trees and regeneration after harvest. Conifer regeneration currently exceeds pre-cutting levels. Aspen sprouting was also heavy, but conifers should remain dominant if the overstory is not drastically reduced by future cuts and logging damage is minimized.
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Document Type: Journal Article

Affiliations: Research Forester, Rocky Mountain Forest and Range Experiment Station, USDA Forest Service, Tempe, Arizona 85287

Publication date: 1983-05-01

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    The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

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