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Keyword: thinning

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.

Short-term responses of overstory and understory vegetation to thinning treatments: a tale of two studies

Publications Posted on: September 30, 2013
The Density Management Study and Young Stand Th inning and Diversity Study were initiated to investigate whether alternative thinning treatments can accelerate the development of forests toward late-successional structures. An overview of overstory and understory vegetation responses indicates that the magnitude and direction of thinning eff ects initially varied among structural stand components.

Fuel treatments and fire severity: A meta-analysis

Publications Posted on: June 10, 2013
We employed meta-analysis and information theory to synthesize findings reported in the literature on the effects of fuel treatments on subsequent fire intensity and severity. Data were compiled from 19 publications that reported observed fire responses from 62 treated versus untreated contrasts. Effect sizes varied widely and the most informative grouping of studies distinguished three vegetation types and three types of fuel treatment.