Partial cutting in old-growth lodgepole pine
Robert R. Alexander, Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.), United States. Forest Service
Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1975 - Nature - 17 pages
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Form Structure and Arrangement of Stands for Key Uses
A Tree Classification for Marking in Partially Cut Stands
30 percent advanced reproduction age classes broad-aged canopy central Rocky Mountains clearcutting cleared openings climax species Colorado crown classes Crown length cutting that removes damage dominants and codominants Douglas-fir duction Engelmann spruce even-aged final harvest forest cover Fraser Experimental Forest group selection cutting habitat Hawksworth heavily infected height in diameter high forest inches d.b.h. infected trees intermediate cone habit lodgepole pine forests logging manageable stand mixed stands mountain pine beetle multi-storied stands nonserotinous or intermediate old-growth lodgepole pine original basal area overstory trees partial cutting practices phloem pure pine pure stands recommended basal area regeneration remove about 30 residual trees second entry second story seed cut seed source shelterwood cut single-storied stand skid roads spruce stand conditions stand descriptions stand of advanced stand of reproduction stand uncut subalpine fir susceptible three-storied stands timber production top story tree height two-storied stands understory usually vigor classes windfall risk situations windfirm windthrow Wyoming