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 71
Página 8
... annual height growth of 1 to 2 feet were not uncommon on vigorous full - crowned true firs and hemlocks . Of course , not all advance reproduction is sufficiently vigorous to respond to release quickly ; but if adequate numbers of ...
... annual height growth of 1 to 2 feet were not uncommon on vigorous full - crowned true firs and hemlocks . Of course , not all advance reproduction is sufficiently vigorous to respond to release quickly ; but if adequate numbers of ...
Página 9
... annually in height . the other hand , most of the natural fir regeneration was less than 4 feet tall and growing in the shade of the pines . Relation of Present Stocking to Environmental Factors The influence of 9 Dominant Species.
... annually in height . the other hand , most of the natural fir regeneration was less than 4 feet tall and growing in the shade of the pines . Relation of Present Stocking to Environmental Factors The influence of 9 Dominant Species.
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... Annual Yield . . . Seasonal Streamflow Instantaneous Peak Flow DISCUSSION Water Yield Peak Flow Relation to Mass Erosion SUMMARY • ACKNOWLEDGMENTS LITERATURE CITED 1 113 3 47 8 8 10 11 13 13 15 19 20 20 20 R. DENNIS HARR is Research ...
... Annual Yield . . . Seasonal Streamflow Instantaneous Peak Flow DISCUSSION Water Yield Peak Flow Relation to Mass Erosion SUMMARY • ACKNOWLEDGMENTS LITERATURE CITED 1 113 3 47 8 8 10 11 13 13 15 19 20 20 20 R. DENNIS HARR is Research ...
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... annual and seasonal yields and instantaneous peak flows were determined on three small , experimental watersheds following three silvicultural methods of timber harvest . Changes are related to changes in forest hydrologic system ...
... annual and seasonal yields and instantaneous peak flows were determined on three small , experimental watersheds following three silvicultural methods of timber harvest . Changes are related to changes in forest hydrologic system ...
Página 1
... annual yield , seasonal yield , and peak streamflow after timber harvest . This report describes changes in streamflow following the first of three phases of timber harvest . Water quality changes will be described in a subsequent ...
... annual yield , seasonal yield , and peak streamflow after timber harvest . This report describes changes in streamflow following the first of three phases of timber harvest . Water quality changes will be described in a subsequent ...
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