Mechanical Properties of 23 Species of Eastern Hardwoods

Mechanical Properties of 23 Species of Eastern Hardwoods PDF

Author: B. A. Bendtsen

Publisher:

Published: 1975

Total Pages: 12

ISBN-13:

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Important mechanical properties of clear, straight-grained wood of 23 species are tabulated, along with coefficients of variation. These property estimates can be used to match up species with kind of material needed for a specific job, or to search for substitutes for a presently used species. Some of the species appear, with allowable properties, in two published plywood manuals. There are no similar hardwood lumber stress grades, but standard methods exist for generating them, should interest develop.

Stump-to-mill Timber Production Cost Equations for Cable Logging Eastern Hardwoods

Stump-to-mill Timber Production Cost Equations for Cable Logging Eastern Hardwoods PDF

Author: Chris B. LeDoux

Publisher:

Published: 1985

Total Pages: 12

ISBN-13:

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S2Logging cost simulators and data from logging cost studies have been assembled and converted into a series of equations that can be used to estimate the stump-to-mill cost of cable logging in mountainous terrain in the Eastern United States. These equations include the use of two small and four medium-size cable yarders and are appropriate for harvested trees ranging in diameter from 6 to 24 inches. Cost components can be determined easily with a hand calculator. A program that can be used with many desktop computers also is available that calculates the total stump-to-mill logging cost for specific logging conditions.S3.

Forest Management and Nutrient Cycling in Eastern Hardwoods

Forest Management and Nutrient Cycling in Eastern Hardwoods PDF

Author: James H. Patric

Publisher:

Published: 1975

Total Pages: 20

ISBN-13:

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The literature was reviewed for reports on nutrient cycling in the eastern deciduous forest, particularly with respect to nitrogen, and for effects of forest management on the nutrient cycle. Although most such research has dealt with conifers, a considerable body of literature relates to hardwoods. Usually, only those references that dealt quantitatively with nutrient cycling were cited. The nutrient content of the forest stand is a relatively small part of the total nutrient pool contained in soil. Under the present practices of harvesting stem wood on a 50- to 100-year rotation, nutrient deficiency as a result of crop removal seems unlikely on most forest land. The probability of nutrient deficiency increases as the trend continues toward shorter rotations and more complete utilization of branchwood, thinnings, culls, and brush presently left on the site to nourish forest regeneration after cutting. Nutrient deficiencies that develop as a result of product harvest can be resolved by modifying cutting practices or by fertilization, or both.

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