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Keyword: thinning

Thinning from below in a 60-year-old western white pine stand

Publications Posted on: August 14, 2015
Thirty-year results from a test of thinning a 60-year-old western white pine stand indicate that thinning does not appreciably change total volume growth, but it does improve the quality of the final product by increasing diameter growth and improving stand composition. This test was established in 1919 on the Priest River Experimental Forest, Idaho, to test three degrees of thinning from below in a 60- year-old stand of western white pine.

Effect of cultural treatments on regeneration of native woodlands on the Northern Great Plains

Publications Posted on: August 12, 2015
Two cultural treatments were evaluated over a 6-year post-treatment period to determine their effect on regeneration of native woodlands in southwestern North Dakota. Cultural treatments included livestock exclusion and the combination of felling and removal of low-vigor trees and transplanting of woody plants. Shrub density varied by species when grazed and ungrazed treatments were compared.

Snow accumulation in thinned lodgepole pine stands, Montana, USA

Publications Posted on: July 28, 2015
Alternative silvicultural treatments such as thinning can be used to restore forested watersheds and reduce wildfire hazards, but the hydrologic effects of these treatments are not well defined.

Growth of ponderosa pine thinned to different stocking levels in the western United States

Publications Posted on: May 07, 2015
Growth of ponderosa pine was studied by the western Forest and Range Experiment Stations of the USDA Forest Service in response to increasing demands for better and more precise estimates of yields possible through intensive management. We summarized results of 15 to 20 years of growth after thinning each of five stands to a wide range of stocking levels.

Wood properties of immature ponderosa pine after thinning

Publications Posted on: May 07, 2015
Trees from growing stock levels of 20, 60, and 100 in sapling and pole stands were sampled at three vertical positions -zero, 25, and 50 percent of total height above the 1-foot stump. Wood grown during the 10-year period after initial thinning was compared for growth and wood properties.

Erosion rates from forests and rangelands following fuel management

Publications Posted on: March 24, 2015
In both forest and rangelands, fuel reduction operations are now common practices. Mechanical thinning followed by prescribed fire is common in forests, while fire is frequently applied to rangelands. Studies at different scales (50 sq m to 389 ha) measure the erosion from fuel management. This presentation compares runoff and erosion from these studies.

Efficacy of diameter-limit thinning treatments to reduce tree mortality from mountain pine beetles in a Wyoming forest

Projects Posted on: December 04, 2014
Mountain pine beetle, Dendroctonus ponderosae Hopkins, is the most significant disturbance agent in pine forests of western North America. Silvicultural treatments that reduce the number of susceptible host trees and alter age class distribution and species composition are considered viable options for reducing stand susceptibility to mountain pine beetle-caused mortality.

A comment on “Management for mountain pine beetle outbreak suppression: Does relevant science support current policy?"

Publications Posted on: September 19, 2014
There are two general approaches for reducing the negative impacts of mountain pine beetle, Dendroctonus ponderosae Hopkins, on forests. Direct control involves short-term tactics designed to address current infestations by manipulating mountain pine beetle populations, and includes the use of fire, insecticides, semiochemicals, sanitation harvests, or a combination of these treatments.

Managing for water-use efficient wood production in Eucalyptus globulus plantations

Publications Posted on: September 18, 2014
This paper tests the hypothesis that thinning and nitrogen fertiliser can increase the mass of wood produced per volume of water used (evapotranspiration) by plantations of Eucalyptus globulus. We have called this plantation water productivity (PWPWOOD) and argue that, for a given genotype, this term integrates the effects of management, site and climate on both production and evapotranspiration.

The once and future forest: Consequences of mountain pine beetle treatment decisions

Publications Posted on: June 27, 2014
Entomologists and silviculturists have long recommended management of stand basal area and/or mean tree diameter to mitigate the risk of mountain pine beetle (MPB) (Dendroctonus ponderosae Hopkins) outbreaks while simultaneously reducing wildfire risk.

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