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 55
Página 2
... mean values for the two leaf collections were compared . Results The average chemical characteris- tics of the leaf tissues of red alder collected at two different times during the year are summarized in table 1. Relative acidities are ...
... mean values for the two leaf collections were compared . Results The average chemical characteris- tics of the leaf tissues of red alder collected at two different times during the year are summarized in table 1. Relative acidities are ...
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... means of fuel loads . An ANOVA was then run on the four activity - type groups , comparing ( 1 ) thinning data with other partial cut data , ( 2 ) thinning plus partial cut data against clearcut data , and finally ( 3 ) natural dead and ...
... means of fuel loads . An ANOVA was then run on the four activity - type groups , comparing ( 1 ) thinning data with other partial cut data , ( 2 ) thinning plus partial cut data against clearcut data , and finally ( 3 ) natural dead and ...
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... Mean SD 2 kg / m 1 - hour fuels Clearcut ( Pacific Northwest ) 0.214 0.116 Other clearcut .255 .187 All clearcut .242 .167 Partial cut .119 .067 Natural .243 .223 10 - hour fuels Clearcut ( Pacific Northwest ) .632 .429 Other clearcut ...
... Mean SD 2 kg / m 1 - hour fuels Clearcut ( Pacific Northwest ) 0.214 0.116 Other clearcut .255 .187 All clearcut .242 .167 Partial cut .119 .067 Natural .243 .223 10 - hour fuels Clearcut ( Pacific Northwest ) .632 .429 Other clearcut ...
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... Mean , standard deviation , and selected. Treatments F ( DF ) 1 / Significance level ( percent ) 1 - hour fuels Thinning vs. partial cut 1.19 ( 1 , 50 ) NS2 / Clearcut vs. partial cut 24.96 ( 1 , 22 ) PNW clearcut vs. other clearcut .95 ...
... Mean , standard deviation , and selected. Treatments F ( DF ) 1 / Significance level ( percent ) 1 - hour fuels Thinning vs. partial cut 1.19 ( 1 , 50 ) NS2 / Clearcut vs. partial cut 24.96 ( 1 , 22 ) PNW clearcut vs. other clearcut .95 ...
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... mean particle diameter data by σ = 4 / d ; ( 2 ) where , d is the mean particle diam- eter in centimeters , and the particles are assumed to be cylindrical in shape with negligible surface area on the ends . The average for needles of ...
... mean particle diameter data by σ = 4 / d ; ( 2 ) where , d is the mean particle diam- eter in centimeters , and the particles are assumed to be cylindrical in shape with negligible surface area on the ends . The average for needles of ...
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