Site Index and Height Growth Curves for Managed, Even-aged Stands of White Or Grand Fir East of the Cascades in Oregon and Washington, Volúmenes246-260Collin D. Bevins, Donald L. Reukema, John Neisess, Kenneth W. Seidel, M. A. Radwan, P. H. Cochran, Paul E. Aho, R. Dennis Harr, Richard E. Miller Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1978 - 21 páginas |
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Resultados 6-10 de 59
Página 9
... associated with greater elevation , there was also a notice- able increase in the amount of snow damage ( stem deformation and breakage ) . Dominant Species Measurements of stocking and density alone do not give a com- plete picture of ...
... associated with greater elevation , there was also a notice- able increase in the amount of snow damage ( stem deformation and breakage ) . Dominant Species Measurements of stocking and density alone do not give a com- plete picture of ...
Página 11
... associated with increased stocking , decreased stocking , or having no strong relationship to stocking as follows : Increased stocking More northerly aspects More litter and slash Little relationship Age of clearcut Elevation Slope ...
... associated with increased stocking , decreased stocking , or having no strong relationship to stocking as follows : Increased stocking More northerly aspects More litter and slash Little relationship Age of clearcut Elevation Slope ...
Página 18
... associated with higher elevations contrary to results in Cascade clearcuts . Increased stocking at higher elevations con- sisted of an abundance of spruce , grand fir , and lodgepole pine natural regeneration . Aspect was again ...
... associated with higher elevations contrary to results in Cascade clearcuts . Increased stocking at higher elevations con- sisted of an abundance of spruce , grand fir , and lodgepole pine natural regeneration . Aspect was again ...
Página 22
... associated with obtaining natural regeneration , it seems best suited as a supplemental rather than a primary method of regenerating mixed conifer clearcuts . Literature Cited In Barrett , James W. , Stanley S. Tornbom , and Robert W ...
... associated with obtaining natural regeneration , it seems best suited as a supplemental rather than a primary method of regenerating mixed conifer clearcuts . Literature Cited In Barrett , James W. , Stanley S. Tornbom , and Robert W ...
Página 3
... associated with cyclones which originate over the Pacific Ocean . Locally , precipitation caused by frontal activity is augmented by orographic precipitation when moist , unstable air masses move inland . Average daytime tempera- tures ...
... associated with cyclones which originate over the Pacific Ocean . Locally , precipitation caused by frontal activity is augmented by orographic precipitation when moist , unstable air masses move inland . Average daytime tempera- tures ...
Términos y frases comunes
100 largest trees 50 percent atrazine average basal area Blue Mountains board-foot breast-high age calibration Cascade Range clearcuts conifer dead tops decay density diameter Douglas-fir equations estimated Forest and Range Forest Service fuel load fuel model grand fir height growth curves illus inches increases lodgepole pine logging mineral soil mixed conifer mountain hemlock National Forest natural regeneration NFDRS number of trees Oreg Oregon Pacific Northwest Pacific Northwest Forest partial cut peak flow percent of roadless planted ponderosa pine Portland postlogging programed harvest Range Exp Range Experiment Station reallocation regression road roadless area withdrawn sample seed seedlings Siskiyou National Forest slope spacing species Stocking percent streamflow study area study Forests subplots timber base timber harvest top-kill treatment period trees per acre tussock moth U.S. Department Umatilla Umatilla National Forest USDA values variables volume Washington watershed western white or grand Willamette National Forest