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Keyword: forest inventory

Where’s the Biomass? A New Approach for Quantifying Biomass and Carbon in the Western United States

Documents and Media Posted on: October 13, 2020
A brand-new Carbon Monitoring System (CMS) developed by RMRS researchers promises to be a valuable resource to support the U.S. Forest Service’s Shared Stewardship Initiative’s goals and policy makers calculating carbon budgets. Document Type: Other Documents

Continental-scale tree-ring-based projection of Douglas-fir growth: Testing the limits of space-for-time substitution

Publications Posted on: July 02, 2020
A central challenge in global change research is the projection of the future behavior of a system based upon past observations. Tree-ring data have been used increasingly over the last decade to project tree growth and forest ecosystem vulnerability under future climate conditions. But how can the response of tree growth to past climate variation predict the future, when the future does not look like the past?

Trait velocities reveal that mortality has driven widespread coordinated shifts in forest hydraulic trait composition

Publications Posted on: June 20, 2020
Understanding the driving mechanisms behind existing patterns of vegetation hydraulic traits and community trait diversity is critical for advancing predictions of the terrestrial carbon cycle because hydraulic traits affect both ecosystem and Earth system responses to changing water availability.

Western larch regeneration responds more strongly to site and indirect climate factors than to direct climate factors

Publications Posted on: June 10, 2020
Substantial shifts in the distribution of western larch (Larix occidentalis Nutt.) are predicted during the coming decades in response to changing climatic conditions. However, it is unclear how the interplay between direct climate effects, such as warmer, drier conditions, and indirect climate effects, such as predicted increases in fire disturbance, will impact fire-adapted species such as western larch.

Logging utilization in Arizona and New Mexico, 2012-2017: Current and past trends

Publications Posted on: May 01, 2020
A study of commercial timber-harvesting sites in Arizona and New Mexico was conducted from 2012 to 2017 to estimate growing-stock removals, characterize current tree utilization and logging operations, and assist with estimating the amount of woody biomass left on-site after harvesting. Fifty-four sample logging sites were selected within major geographic regions proportional to regional five-year timber harvests.

Montana’s forest resources, 2006-2015

Publications Posted on: October 15, 2019
This report presents a summary of the most recent Forest Inventory and Analysis summary of Montana’s forests based on field data collected between 2006 and 2015. The report includes descriptive highlights and tables of area, numbers of trees, biomass, volume, growth, and mortality, as well as an industry report. Most sections and tables are organized by forest type or forest-type group, tree species group, diameter class, or owner group.

The stability of mean wood specific gravity across stand age in US forests despite species turnover

Publications Posted on: September 14, 2019
Research Highlights: Estimates using measurements from a sample of approximately 132,000 field plots imply that while the species composition of US forests varies substantially across different age groups, the specific gravity of wood in those forests does not.

Model-Assisted Survey Estimation (mase)

Tools Posted on: September 03, 2019
Having precise estimates of our forest characteristics is important if we want to assess the status of our forests, detect change, or monitor trends. New statistical estimators enable us to improve precision by merging forest inventory data with data from a variety of remote sensing instruments but often pose computational challenges.

New statistical estimation tool is a"mase"ing!

Science Spotlights Posted on: August 26, 2019
Having precise estimates of our forest characteristics is important if we want to assess the status of our forests, detect change, or monitor trends. New statistical estimators enable us to improve precision by merging forest inventory data with data from a variety of remote sensing instruments, but often pose computational challenges. This new tutorial and R software package makes both old and new survey estimation tools easily accessible.

Using forest inventory data with Landsat 8 imagery to map longleaf pine forest characteristics in Georgia, USA

Publications Posted on: August 19, 2019
This study improved on previous efforts to map longleaf pine (Pinus palustris) over large areas in the southeastern United States of America by developing new methods that integrate forest inventory data, aerial photography and Landsat 8 imagery to model forest characteristics.

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