United States Department of Agriculture
Traces the history of USDA Forest Service fire reports, examines the most recent report, Form 5100-29, and discusses the reliability of information recorded on the 5100-29, factors influencing data accuracy, and reactions of the Ranger District personnel to wildfire reporting.
Documents the biomass in 12 typical stands of puckerbrush and evaluates the feasibility of several potential systems to harvest these stands. Identifies areas of needed development for economically viable harvesting systems.
Reports height and diameter growth of tamarack seed sources planted in northern Wisconsin and makes recommendations for selecting the highest-yielding sources.
Shows pictorially the relations between exterior defect indicators and their underlying defects for old-growth sugar maple in the Lake States.
Compares the 1978 National Fire-Danger Rating System and its 20 fuel models, along with other danger rating systems, with observed fire behavior and rates the strengths and weaknesses of models and systems.
Includes 627 items constituting virtually all the technical literature dealing with the ecology, silviculture, and timber products of Juglans. Material is arranged in alphabetical order by author. An index lists the items by subject matters.
Quaking aspen clones expanded over more area, and regenerated greater sucker stem densities and biomass than did bigtooth aspen clones. However, sucker height growth was similar between the two species.
Examines aspects of precipitation-hours per unit time. Presents nationwide patterns of mean precipitation-hours per month as well as precipitation-hours per precipitation-day.
A 6-year exposure test of three styles of siding made from nine hardwoods and given three treatments showed that full-length yellow-poplar vertical tongue-and-groove siding dip-treated in a water-repellent preservative performed best.
Describes the financial performance of red pine on site index 60, 70, and 80 lands by using new yield evidence and up-to-date cost and revenue assumptions. Best combinations of initial stocking, residual basal area after thinning, an rotation age are identified for two different financial criteria: soil expectation value and internal rate of return.
Presents Wisconsin timber resource statistics that were updated by the tree growth projection subsystem of the Forest Resources Evaluation Program (FREP).
Fertilization of poor site black spruce on organic soil with various rates of nitrogen and phosphorus increased height and diameter growth from 2 to 4 times. The growth response declined with time but was still apparent 16 years after fertilization. Shrub biomass and coverage, and nutrient levels of spruce foliage were strongly affected by fertilization.
Presents equations for estimating biomass of six components on five species of shrubs common to northeastern Minnesota. Regression analysis is used to compare the performance of three estimators of biomass.
Describes a network of short-rotation, Populus research and demonstration plantations that has been established across a 5-state region in the north-central U.S. to identify suitable hybrid poplar clones for large-scale biomass plantations in the region. Reports 6-year results.
Examines the d.b.h.-age and stockability relationships in aspen stands of varying ages and densities. Accounts for the curvilinear trend in the self-thinning relationship in young aspen stands.
Describes and presents the results of performance testing for an experimental machine that produces chunky wood particles. These wood chunks can be used by the flakeboard industry or as energy wood.
Summarizes recent efforts that have completed the grouse restoration program in Missouri. Presents information on grouse abundance and trends from short- and long-term monitoring at release sites. Reviews ruffed rouse hunting in Missouri, and examines two case studies of grouse response to habitat management.
Analyzes trends in favorable and unfavorable attitudes toward the Recreational Fee Demonstration Program (RFDP) in the national forests, updating an earlier study using computer content analysis of the public debate. About 65 percent of the attitudes toward the RFDP were favorable, comparable to the findings of survey research.
Analyzes previous visits to a forest and the associated experiences, as well as the expectations of those who had not previously visited a forest. Recommends educational programs that focus on the urban forest.
Tests the feasibility and economics of compacting hardwood tops with a prototype shearing and bunching device prior to skidding. Presents productivity levels and costs associated with compacting, skidding, and chipping hardwood tops.