Treesearch

A number of Appalachian hardwood trees are ranked according to the following silvical characteristics: shade tolerands, development of epicormic branching, susceptibility to frost damage, diameter growth rate, and seed dormancy.

In a study of hardwood regeneration, experimental plots were treated to produce residual densities of 40, 60, 80, and 100 square feet of basal area per acre with 30, 45, and 60 percent sawtimber. After 9 years, numbers of stems and percent stocking were estimated for each species and they were rated for reproductive potential under different residual densities. Data from a 3-year-old patch cutting are given for comparison.

Provides a practical method of estimating subregional removals of timber and demonstrates its application to a typical problem. Stepwise multiple regression analysis is used to develop equations for estimating removals of softwood, hardwood, and all timber from selected characteristics of socioeconomic structure.

An automated rough mill layout has been designed for manufacturing interior furniture parts. Designed to reduce human decisions and mistakes that can be costly when converting lumber into parts, the mill is based on a manufacturing sequence in which lumber is first gangsaw-ripped into standard-width strips before being crosscut to remove defects and cut to specific lengths. It is also expected to reduce manpower requirements, provide coordinated materials handling, provide better production control, and ensure consistently good yields. Standardization to one or a few widths permits maximum...