Site Index and Height Growth Curves for Managed, Even-aged Stands of White Or Grand Fir East of the Cascades in Oregon and Washington, Volumes 246-260Collin 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 - Browse - 21 pages |
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Page 8
... included in the fuel loads for the 1 - hour size class since the NFDRS considers " average - bad " con- ditions . Because many slash units are not treated until after the very flammable " red slash " stage , adding the needle component ...
... included in the fuel loads for the 1 - hour size class since the NFDRS considers " average - bad " con- ditions . Because many slash units are not treated until after the very flammable " red slash " stage , adding the needle component ...
Page 9
... included in most of the collected inventory data . A Because the vertical distribution of logging slash is not uniform ( Brown 1970b , Bevins 1975 ) , use of the highest particle intersect depth tends to overestimate the fuel bed depth ...
... included in most of the collected inventory data . A Because the vertical distribution of logging slash is not uniform ( Brown 1970b , Bevins 1975 ) , use of the highest particle intersect depth tends to overestimate the fuel bed depth ...
Page 10
... included as a specific parameter in the two proposed slash models with a value of 20 000 j / g . Particle density . --The sensitivity analysis indicates that the fuel particle density would have to drop from 0.513 g / cm3 to 0.330 g ...
... included as a specific parameter in the two proposed slash models with a value of 20 000 j / g . Particle density . --The sensitivity analysis indicates that the fuel particle density would have to drop from 0.513 g / cm3 to 0.330 g ...
Page 14
... included in the 1977 version of the NFDRS . Table 11 demonstrates that if the low , moderate , and high danger spread rates are normalized against the extreme spread rate , three models produce the same danger index at each level . For ...
... included in the 1977 version of the NFDRS . Table 11 demonstrates that if the low , moderate , and high danger spread rates are normalized against the extreme spread rate , three models produce the same danger index at each level . For ...
Page 15
... included in the NFDRS as it will produce danger indices similar to those of the clearcut model . The alternative recommendation is to increase fuel model spread rate predictions by using the weighted characteristic fuel load to deter ...
... included in the NFDRS as it will produce danger indices similar to those of the clearcut model . The alternative recommendation is to increase fuel model spread rate predictions by using the weighted characteristic fuel load to deter ...
Common terms and phrases
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