diameter distribution host:www.na.fs.fed.us

Listing 1 - 10 from 53 for diameter distribution

Tsuga canadensis (L
... fall within tree height because of the small wings. Additional distribution may occur from drifting on crusted snow. Some seeds ... consistently have a stocking of older age classes and larger diameter trees that provided shelter during the regeneration period (17,33, ... in stands predominantly hemlock (50 percent or more); a stand structure (diameter distribution) of 35 percent poles 13 to 25 cm (5 to ...
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Prunus serotina Ehrh
... mammals, such as foxes and bears, also distribute seeds in their droppings. Bird and mammal distribution often accounts for a surprising abundance of advance cherry seedlings in stands lacking cherry ... Those individuals that drop to lower crown levels decline in growth and soon die. Thus, diameter distribution of black cherry in even-aged stands follows the bell-shaped curve typical of intolerant ...
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Abies concolor (Gord
... susceptible to ozone damage. Although fir grows faster than associated species in southern California, diameter growth is affected by oxidant damage as much as that of Ponderosa pine (43). ... Experiment Station, Berkeley, CA. 14 p. Griffin, James R., and William B. Critchfield. 1972. The distribution of forest trees in California. Reprinted with Supplement, 1976. USDA Forest Service, Research Paper ...
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Abies grandis (Dougl
... seedling establishment, the overstory should be removed to encourage rapid growth in height and diameter. Under uneven-aged management, grand fir regenerates adequately and commonly outgrows the more ... . 359-365. B. C. Ministry of Forests, Vancouver, B. C. Steinhoff, R. J. 1978. Distribution, ecology, silvicultural characteristics, and genetics of the Abies grandis-Abies concolor complex. In ...
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Abies lasiocarpa (Hook
... and Canada. Washington, DC, Society of American Foresters. 148 p. Alexander, Robert R. 1985. Diameter and basal area distributions in old-growth spruce-fir stands on the Fraser Experimental ... of Agriculture, Technical Bulletin 1169. Washington, DC. 168 p. Kirkwood, J. E. 1922. Forest distribution on the northern Rocky Mountains. Montana State University Bulletin 247. Missoula. 180 p. Larsen, ...
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Abies magnifica A
... On at least some sites, however, saplings and poles have large-diameter, carrot-like taproots extending more than 1 m (3 ft) deep ... kill trees up to at least 94 cm (37 in) in diameter at breast height (23). Direct control is difficult and expensive. ... ):177-185. Griffin, James R., and William B. Critchfield. 1972. The distribution of forest trees in California. USDA Forest Service, Research Paper PSW- ...
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Abies procera Rehd
... Pass or latitudes 44° and 48° N. Most of its distribution is within the Cascade Range, particularly on the western slopes and ... and Pacific silver fir. It has a greater volume for a given diameter and height than any of its associates and dominates such stands ... Forest Resources, Seattle. Franklin, Jerry F. 1964. Some notes on the distribution and ecology of noble fir. Northwest Science 38(l):1-13. ...
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Chamaecyparis thyoides (L
... forests, however, have always been of minor importance because the scarcity of suitable sites makes distribution of the species within the coastal belt exceedingly patchy. White-cedar is most important commercially ... . until trees are 40 to 50 years old. After 50 years, height growth slows, while diameter growth continues at about the same rate for an additional 50 years. Height growth essentially ...
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Larix laricina (Du Roi) K
... near the Alaska-Yukon border. - The native range of tamarack. Climate Because of its wide distribution, tamarack grows under extremely varied climatic conditions. Average January temperatures range from -30° to - ... tallest seedlings and heaviest root weights (26). Under drought conditions, leader length and stem diameter were significantly reduced by soil moisture tensions of 15.2 bar (15 atm), but ...
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Larix lyallii Parl
... restricted by low soil temperatures and high acidity. Throughout its distribution, alpine larch commonly grows on slopes covered with granite or quartzite ... or scarce on nearby limestone or dolomite (4,21). This distribution contrasts markedly with that of several other cold-climate conifers, ... 175 51 20 500 225 99 39 - 450 The largest diameter shown is not attained on "average" sites. Although from ...
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