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 9
... equation to be both accurate and precise enough to reduce the highest par- ticle intersect depths to bulk depths . The 67 - percent levels of the two fuel type bulk depths were derived using equations ( 1 ) and ( 3 ) . Use of the 67 ...
... equation to be both accurate and precise enough to reduce the highest par- ticle intersect depths to bulk depths . The 67 - percent levels of the two fuel type bulk depths were derived using equations ( 1 ) and ( 3 ) . Use of the 67 ...
Page 11
... equation has an R2 of 0.80 and a standard error of estimate of 0.08 . Equation 4 yields an My value of 0.182 for the clearcut model and 0.203 for the partial cut model . Use of the new Mx values would re- duce spread predictions by 2 to ...
... equation has an R2 of 0.80 and a standard error of estimate of 0.08 . Equation 4 yields an My value of 0.182 for the clearcut model and 0.203 for the partial cut model . Use of the new Mx values would re- duce spread predictions by 2 to ...
Page
... Equations . Blue Mountains Regeneration Stocking and Density Species Composition of Regeneration Dominant Species . . Relation of Present Stocking to Environmental Factors Prediction Equations CONCLUSIONS AND RECOMMENDATIONS LITERATURE ...
... Equations . Blue Mountains Regeneration Stocking and Density Species Composition of Regeneration Dominant Species . . Relation of Present Stocking to Environmental Factors Prediction Equations CONCLUSIONS AND RECOMMENDATIONS LITERATURE ...
Page 4
... equations of the form Y = bo + b1x1 + b2X2 + .... bnXn to the data . Dependent ( Y ) variables used were stocking percentage of the various species and origins , and independent ( X ) variables were the environmental factors given in ...
... equations of the form Y = bo + b1x1 + b2X2 + .... bnXn to the data . Dependent ( Y ) variables used were stocking percentage of the various species and origins , and independent ( X ) variables were the environmental factors given in ...
Page 11
... equations . In the mountain hemlock clearcuts , both grass and forbs have a consistent negative relationship to ... equation may be opposite of its effect in the single variable correlation . If we keep these inconsistencies in mind ...
... equations . In the mountain hemlock clearcuts , both grass and forbs have a consistent negative relationship to ... equation may be opposite of its effect in the single variable correlation . If we keep these inconsistencies in mind ...
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