Treesearch

A sensitive precipitation collector and automated pH-monitoring system are described. This system provides for continuous monitoring and recording of the pH of precipitation. Discrete or composite rainwater samples are manually obtainable for chemical analyses. The system can easily be adapted to accommodate a flow-through specific conductance probe and monitoring components.

A study of residue on five woods landings in West Virginia showed that short lengths, poor quality, and low volumes are obstacles to utilization of this material. Short lengths and dirt accumulation would also pose serious problems for conversion to chips. Some local use for firewood and specialty products is possible.

Seeds in samaras separated in n-pentane have been stored successfully for 5½ years. The seeds in the separated samaras germinated equally as well as the unseparated controls, indicating that there was no detrimental effect from the n-pentane.

Current information about wood and bark residues lacks the consistency needed to enable complete understanding and comparison from source to source. To make information about wood and bark residues more useful for production and marketing decisions, the Forest Products Marketing Laboratory of the USDA Forest Service and the Tennessee Valley Authority prepared this glossary of terms and standards for measuring wood and bark mill residues. The International System of Units (SI) is recommended as standard practice for workers in this field. Related conversion factors and principles for the...

An Appalachian hardwood timber stand that contained 6,700 board feet per acre of sawtimber was harvested by clearcutting. After the merchantable sawlogs were removed, this stand contained 69.3 tons per acre of green wood residue. Thirty-three and one-third tons of residue were from tops of merchantable sawtimber; 36 tons were from residual trees. Treetop residue yielded 1,800 board feet of marketable sawed products and 26 tons of chippable wood. The residual trees yielded 3,000 board feet of sawed products and 25.6 tons of chippable wood. The overall weight of residue was about 1.8 times...

A survey of 8- and 12-year-old hardwood stump sprouts was made in north-central West Virginia. Species surveyed were yellow-poplar, black cherry, red oak, red maple, and basswood. Of the stumps cut 12 years ago, 66 percent produced at least one dominant or codominant sprout that originated at groundline and was free from forks in the lower 25 feet of the bole. The abundance and quality of these stump sprouts indicated that many of them can be considered as potential sawlog crop trees.

Hikers, horseback riders, bicycle riders, and motorcycle riders were interviewed on randomly selected trails in Ohio to better understand who they are and why they use trails. Bicycle riders were found to be the most active trail users; bicycle and motorcycle riders were younger than hikers and horseback riders. The majority of hikers and horseback riders preferred single-use trails. People used trails for the enjoyment of nature.

An equation for predicting logging-residue volume per acre for Appalachian hardwoods was developed from data collected on 20 timber sales in national forests in West Virginia and Virginia. The independent variables of type-of-cut, products removed, basal area per acre, and stand age explained 95 percent of the variation in residue volume per acre. A "yield" table was then prepared to show probable residue volumes for four cutting practices, and various levels of basal area and stand age.

Compatibility indexes show how Ohio trail users feel about meeting each other on the trail. All four of the major types of trail users-hikers, horseback riders, bicycle riders, and motorcycle riders-enjoy meeting their own kind. But they also feel antagonism toward the faster, more mechanized trail users; e.g., everyone likes hikers, but few like motorcycle riders. Separating the average indexes into their components gives important information for trail planners, builders, and managers attempting to optimize the enjoyment of trails.

A statistical-analytical report of a mail canvass of the owners of privately owned commercial forest land in the three Southern New England States-Connecticut, Massachusetts, and Rhode Island. The study was conducted in conjunction with the second forest survey of Southern New England by the USDA Forest Service. Trends in forest-land ownership and the attitudes and intentions of owners regarding reasons for owning forest land, timber management, timber harvesting, recreational use, etc., are discussed.