You are here

Keyword: Abies concolor

GENGYM: A variable density stand table projection system calibrated for mixed conifer and ponderosa pine stands in the Southwest

Publications Posted on: February 26, 2019
A computerized growth and yield model based on a variable density stand table projection system using 1-inch-wide diameter classes has been developed for projecting expected stand conditions in southwestern mixed conifer and ponderosa pine stands, including the effects of dwarf mistletoe. Stand management options include both even-aged and uneven-aged cutting methods.

Canopy fuel and tree biomass data from the Interior West

Datasets Posted on: March 27, 2015
This data set contains destructively sampled canopy fuel and tree biomass data from five study sites in the Interior West.

Profile models for estimating log end diameters in the Rocky Mountain Region

Publications Posted on: January 23, 2012
The segmented polynomial stem profile model of Max and Burkhart was applied to seven tree species in the Rocky Mountain Region of the Forest Service. Errors were reduced over the entire data set by use of second-stage models that adjust for transformation bias and explained weak patterns in the residual diameter predictions.

Forest thinning and subsequent bark beetle-caused mortality in Northeastern California

Publications Posted on: November 08, 2010
The Warner Mountains of northeastern California on the Modoc National Forest experienced a high incidence of tree mortality (2001-2007) that was associated with drought and bark beetle (Coleoptera: Curculionidae, Scolytinae) attack. Various silvicultural thinning treatments were implemented prior to this period of tree mortality to reduce stand density and increase residual tree growth and vigor.

Classification of the forest vegetation on the National Forests of Arizona and New Mexico

Publications Posted on: July 07, 2010
Forest vegetation classified by habitat types and community types in Arizona and New Mexico are tabulated. Eleven series and 123 habitat and community types are identified; however, these habitat types and community types have been grouped into a lesser number of categories having similar characteristics or synonymous names.

Abies concolor growth responses to vegetation changes following shrub removal, northern Sierra Nevada, California

Publications Posted on: November 30, 2007
Conifer productivity in western North America is often severely inhibited by competing vegetation. Abies concolor [Gord. and Glendl.] Lindl. (white fir) is an important species over much of this area, yet little information is available on response of A. concolor to vegetation management treatments. We revisited two sites in the northern Sierra Nevada to assess the responses of naturally regenerated A.

Site index curves for white fir in the southwestern United States developed using a guide curve method

Publications Posted on: July 06, 2006
Site index curves for white fir (Abies concolor) in Arizona, New Mexico, and southwestern Colorado were developed using height-age measurements and an estimated guide curve and 95% confidence intervals for individual predictions. The curves were developed using height-age data for 1,048 white firs from 263 study sites distributed across eight national forests.