Lodgepole Pine Clearcut Size Affects Minimum Temperatures Near the Soil Surface PDF Download
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Author: P. H. Cochran
Publisher:
ISBN:
Category : Clearcutting
Languages : en
Pages : 534
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Author: P. H. Cochran
Publisher:
ISBN:
Category : Clearcutting
Languages : en
Pages : 534
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Book Description
Author: P. H. Cochran
Publisher:
ISBN:
Category : Clearcutting
Languages : en
Pages : 9
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Author: P. H. Cochran
Publisher: Forgotten Books
ISBN: 9780265783283
Category :
Languages : en
Pages : 22
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Book Description
Excerpt from Lodgepole Pine Clearcut Size Affects Minimum Temperatures Near the Soil Surface The view factor is the fraction of radiation leaving a surface in all directions that is intercepted by another Of concern here is the View factor of a spot on a horizontal surface relative to the Open sky. The greater the View factor for a particular spot, the more closely the net radiation flux of that spot will resemble the net radiation flux of a similar surface in a completely Open area under the same meteorological conditions. View factors were calculated for circular Openings of various widths and for rectangular Openings Of various lengths and widths. View factors were also calculated for spots at various distances from the stand edge for very large clearcuts where the spots were influenced by only one stand edge. The equations used in these calcula tions and their derivations are given in the Appendix. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: P. H. Cochran
Publisher:
ISBN:
Category : Forest regeneration
Languages : en
Pages : 20
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A sequence of events is necessary for natural regeneration in the pumice soil region: Adequate seed must be probed and distributed over the area, germination must be favored by warm and moist surface soils, daily surface temperature variation must be moderate, seedlings must survive summer drought, and weather conditions must prevent severe frost heaving the fall after germination and the next spring. This sequence does not always occur within a reasonable time after cutting, and natural regeneration is often delayed. Four possibilities are open to the land manager: (1) declare as noncommercial some severe sites such as lodgepole pine/needlegrass and lodgepole pine/bitterbrush/needlegrass plant communities on flat or basin topography; (2) depend more on a planting program; (3) leave a light slash cover on the surface after shelterwood or narrow strip cutting; and (4) leave a shelterwood on the area after a more thorough slash treatment and be willing to wait much longer than 5 years for natural regeneration. Some problems now exist in obtaining good lodgepole planting stock. Also the slash cover does not guarantee success of natural regeneration and option 3 might turn into option 4.
Author: Owen P. Cramer
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 560
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Author: Walter G. Dahms
Publisher:
ISBN:
Category : Lodgepole pine
Languages : en
Pages : 20
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Author: Garwin T. Carlson
Publisher:
ISBN:
Category : Forest soils
Languages : en
Pages : 244
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Author:
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 890
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 668
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Author: J. Michael Geist
Publisher:
ISBN:
Category :
Languages : en
Pages : 704
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