Zobrazeno 1 - 10
of 146
pro vyhledávání: '"Paul S. Johnson"'
Autor:
Uselding, Paul
Publikováno v:
The Journal of Economic History, 1977 Jun 01. 37(2), 533-534.
Externí odkaz:
https://www.jstor.org/stable/2118811
Autor:
Paul Uselding
Publikováno v:
The Journal of Economic History. 37:533-534
The third edition of The Ecology and Silviculture of Oaks is an updated and expanded edition that explores oak forests as responsive ecosystems. New chapters emphasize the importance of fire in sustaining and managing oak forests, the effects of a ch
Autor:
Dan Williams, Paul S. Johnson
Publikováno v:
Survey Practice. 3:1-10
Publikováno v:
Southern Journal of Applied Forestry. 33:182-187
Tree biology, environmental site conditions, relative monetary costs, management options, and the competitive struggle between planted trees and other vegetation were integrated when underplanting northern red oak (Quercus rubra L.) seedlings in Bost
Autor:
John M. Kabrick, Martin A. Spetich, Daniel C. Dey, Paul S. Johnson, David L. Graney, Dale R. Weigel
Publikováno v:
New Forests. 37:123-135
Research on oak (Quercus L.) regeneration has generally consisted of small- scale studies of treatments designed to favor oak, including consideration of site quality and topographic effects on oak regeneration. However, these experiments have not co
Publikováno v:
Canadian Journal of Forest Research. 30:1060-1070
We studied the age and diameter structure on one section (259 ha) of a 63 000-ha privately owned forest in the Ozark Highlands of Missouri. The forest has been managed using a partial cutting strategy since 1954. Because a majority of the trees preda
Autor:
Paul S. Johnson, David R. Larsen
Publikováno v:
Forest Ecology and Management. 106:1-7
The regeneration requirements of oaks (Quercus spp.) differ among species. Oaks differ in their ability to produce seed, germinate and, as for reproduction, to endure shade, drought, and other stresses. Under the low to moderate shade that characteri
Publikováno v:
Northern Journal of Applied Forestry. 15:28-32
Estimates of regeneration or growing stock in young oak forests may be too high unless criteria are established that define explicitly acceptable growing stock. In young hardwood stands, crown class can be used to identify acceptable growing stock be
Publikováno v:
Canadian Journal of Forest Research. 26:573-583
This paper describes a method for modeling the regeneration of even-aged oak stands in the Ozark Highlands of southern Missouri. The approach is based on (i) a growth model that is applicable to both oak sprouts and advance reproduction and (ii) a me