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 46
Página 1
... established ( Sneeuwjagt 1974 ) . The objective of the study reported here was to evaluate the activity - created slash ( I ) model of the NFDRS . The results of the study would be used in development of fuel models for the 1978 version ...
... established ( Sneeuwjagt 1974 ) . The objective of the study reported here was to evaluate the activity - created slash ( I ) model of the NFDRS . The results of the study would be used in development of fuel models for the 1978 version ...
Página 9
... established between the bulk depth and the highest particle intersect depth based upon duplicate depth measure- ments taken at the same point using both techniques . A limited number of areas were sampled and may be very weak in ...
... established between the bulk depth and the highest particle intersect depth based upon duplicate depth measure- ments taken at the same point using both techniques . A limited number of areas were sampled and may be very weak in ...
Página 1
... established . Therefore , in 1976 , I began a sur- vey of regeneration on these clear- cuts and a study of the factors affecting its establishment . paper reports the results of the field survey conducted during 1976 and 1977 on the ...
... established . Therefore , in 1976 , I began a sur- vey of regeneration on these clear- cuts and a study of the factors affecting its establishment . paper reports the results of the field survey conducted during 1976 and 1977 on the ...
Página 5
... established before and after logging . An average of 53 percent of the milacre subplots were stocked in 28 plots in hemlock type compared with 59 percent in mixed conifer community ( table 2 ) . If total stocking is evaluated on the ...
... established before and after logging . An average of 53 percent of the milacre subplots were stocked in 28 plots in hemlock type compared with 59 percent in mixed conifer community ( table 2 ) . If total stocking is evaluated on the ...
Página 8
... establishing a new stand by planting or natural regeneration can be avoided . Species Composition of Regeneration The regeneration in both plant communities was composed of a mix- ture of species . In the mountain hemlock type , more ...
... establishing a new stand by planting or natural regeneration can be avoided . Species Composition of Regeneration The regeneration in both plant communities was composed of a mix- ture of species . In the mountain hemlock type , more ...
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