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Keyword: lidar

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

Improved maps of disturbance and recovery across the United States

Events Posted on: October 06, 2020
In this webinar, RMRS research ecologist Sean Healey will discuss improved techniques for mapping forest disturbance and recovery across the United States with remotely sensed data. 

Where’s the biomass? A new approach for quantifying biomass and carbon in the western United States

Events Posted on: October 06, 2020
In this webinar, RMRS research forester Andy Hudak will discuss the Carbon Monitoring System, which draws upon the power of computer modeling, LiDAR, field data, and aerial photography to map forest and woodland biomass.

The Global Ecosystem Dynamics Investigation: High-resolution laser ranging of the Earth’s forests and topography

Publications Posted on: July 02, 2020
Obtaining accurate and widespread measurements of the vertical structure of the Earth’s forests has been a long-sought goal for the ecological community. Such observations are critical for accurately assessing the existing biomass of forests, and how changes in this biomass caused by human activities or variations in climate may impact atmospheric CO2 concentrations.

Reconstruction of the disturbance history of a temperate coniferous forest through stand-level analysis of airborne LiDAR data

Publications Posted on: May 15, 2020
Spatially explicit information about stand-level Time Since the last stand-replacing Disturbance (TSD) is fundamental for modelling many forest ecosystem processes, but most of the current satellite remote sensing mapping approaches are based on change detection and time series analysis, and can detect only disturbances that have occurred since the start of the optical satellite data record.

Carbon Monitoring System: Aboveground biomass estimates for the Pacific Northwest, Inland Northwest, and Great Basin

Tools Posted on: May 13, 2020
Calculating aboveground biomass in forests and woodlands from forest inventory plot measurements, LiDAR, aerial photography, or satellite imagery alone will not yield accurate estimates because each of these datasets have limitations in spatial coverage, temporal frequency, data collection methods or lack of quantifiable measurements.

Where’s the biomass? A new approach for quantifying biomass and carbon in the Western United States

Science Spotlights Posted on: May 08, 2020
The 2012 Forest Service Planning rule requires that National Forests incorporate into their forest management plans mitigation and adaptation strategies in response to climate change. The Carbon Monitoring System provides annual biomass maps spanning 2000-2016 that will be useful for developing carbon budgets for National Forests and identifying areas needing fuel treatments to reduce wildfire risk. The underlying foundation of this work is forest inventory and LiDAR data contributed by USFS managers and many other public and private stakeholders.

Fractal distribution of snow depth from LiDAR data

Publications Posted on: March 12, 2020
Snowpack properties vary dramatically over a wide range of spatial scales, from crystal microstructure to regional snow climates. The driving forces of wind, energy balance, and precipitation interact with topography and vegetation to dominate snow depth variability at horizontal scales from 1 to 1000 m.

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.

Statistical properties of hybrid estimators proposed for GEDI - NASA’s global ecosystem dynamics investigation

Publications Posted on: August 06, 2019
NASA’s Global Ecosystem Dynamics Investigation (GEDI) mission will collect waveform lidar data at a dense sample of ~25 m footprints along ground tracks paralleling the orbit of the International Space Station (ISS). GEDI’s primary science deliverable will be a 1 km grid of estimated mean aboveground biomass density (Mg ha-1), covering the latitudes overflown by ISS (51.6 ° S to 51.6 ° N).

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