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 |
Dentro del libro
Resultados 1-5 de 72
Página 3
... less succulent in September than in June . Minerals .-- Mineral elements , as shown by the ash content , averaged about 3 percent for the two collections . This indicates that an average of approximately 97 percent of the dry matter was ...
... less succulent in September than in June . Minerals .-- Mineral elements , as shown by the ash content , averaged about 3 percent for the two collections . This indicates that an average of approximately 97 percent of the dry matter was ...
Página 3
... less than 1 percent , and dashes indicate no response . Northern Forest Fire 2933 64 96 2414 53 All fuel. classes , with a moisture of extinction of 0.200 fraction odw . The slope was 50 degrees with a windspeed of 8.0 kilometers per ...
... less than 1 percent , and dashes indicate no response . Northern Forest Fire 2933 64 96 2414 53 All fuel. classes , with a moisture of extinction of 0.200 fraction odw . The slope was 50 degrees with a windspeed of 8.0 kilometers per ...
Página 13
... less than those of the slash ( I ) model . Clearcut model predictions are about one - fourth , and partial cut values one - sixteenth those of the slash ( I ) model's . This is primarily a result of the higher fuel array packing ratios ...
... less than those of the slash ( I ) model . Clearcut model predictions are about one - fourth , and partial cut values one - sixteenth those of the slash ( I ) model's . This is primarily a result of the higher fuel array packing ratios ...
Página 14
... less than 7.7 cm . This cut - off point is an artifact of the fuel sampling technique ( Brown 1974 ) which divides dead and down fuels into 0- to .63- , .64- to 2.5- , 2.5- to 7.6- , and 7.7- + cm classes . ( 6 ) This presents the ...
... less than 7.7 cm . This cut - off point is an artifact of the fuel sampling technique ( Brown 1974 ) which divides dead and down fuels into 0- to .63- , .64- to 2.5- , 2.5- to 7.6- , and 7.7- + cm classes . ( 6 ) This presents the ...
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... less than 5,300 feet ; and at higher elevations in the Cascades , considerable amounts of true fir and mountain hemlock advance reproduction were present . Seedling establishment was better on more northerly aspects while increasing ...
... less than 5,300 feet ; and at higher elevations in the Cascades , considerable amounts of true fir and mountain hemlock advance reproduction were present . Seedling establishment was better on more northerly aspects while increasing ...
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