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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Página 1
... developed at the Rocky Mountain Forest and Range Experiment Station of the USDA Forest Service , Fort Collins , Colorado , beginning in the spring of 1968. At that time the projected operational target date was set for 1972. The target ...
... developed at the Rocky Mountain Forest and Range Experiment Station of the USDA Forest Service , Fort Collins , Colorado , beginning in the spring of 1968. At that time the projected operational target date was set for 1972. The target ...
Página 14
... developed using uniform fuel beds of excelsior , 0.635 - cm sticks , or 1.27 - cm sticks . The determination of the fuel array packing ratio for such uniform beds is straightforward ; B = ω / δ ρ 8 Ppi ( 5 ) where , 8 is the packing ...
... developed using uniform fuel beds of excelsior , 0.635 - cm sticks , or 1.27 - cm sticks . The determination of the fuel array packing ratio for such uniform beds is straightforward ; B = ω / δ ρ 8 Ppi ( 5 ) where , 8 is the packing ...
Página 2
... developed from aerially deposited dacite and rhyolitic pumice ejected from Mount Mazama ( Crater Lake ) about 6,500 years ago . These well - drained , coarse - textured soils have thin A horizons low in fertility which grade into ...
... developed from aerially deposited dacite and rhyolitic pumice ejected from Mount Mazama ( Crater Lake ) about 6,500 years ago . These well - drained , coarse - textured soils have thin A horizons low in fertility which grade into ...
Página 3
... developed in the ash layer deposited from Mount Mazama or Glacier Peak . These are well - drained soils with silt loam A - C horizons over older buried soils or basalt ( Wade 1975 ) . Methods SURVEY DESIGN AND PLOT SELECTION Clearcut ...
... developed in the ash layer deposited from Mount Mazama or Glacier Peak . These are well - drained soils with silt loam A - C horizons over older buried soils or basalt ( Wade 1975 ) . Methods SURVEY DESIGN AND PLOT SELECTION Clearcut ...
Página 13
... developed for the mountain hemlock clearcuts appears unlikely because of the large amount of unexplained varia- tion present . The equation pre- dicting stocking of all 1- and 2- year - old seedlings accounted for the most variation ...
... developed for the mountain hemlock clearcuts appears unlikely because of the large amount of unexplained varia- tion present . The equation pre- dicting stocking of all 1- and 2- year - old seedlings accounted for the most variation ...
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