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Keyword: maps

The aquatic eDNAtlas project

Projects Posted on: February 08, 2018
The website provides: 1) A large list of supporting science behind eDNA sampling. 2) The recommended field protocol for eDNA sampling and the equipment loan program administered by the NGC. 3) A systematically-spaced sampling grid for all flowing waters of the U.S. in a downloadable format that includes unique database identifiers and geographic coordinates for all sampling sites. Available for download in an Geodatabase or available by ArcGIS Online map. This sampling grid can be used to determine your field collection sites to contribute. 4) The lab results of eDNA sampling at those sites where project partners have agreed to share data.

National forest climate change maps: your guide to the future

Projects Posted on: April 17, 2017
The National Forest Climate Change Maps project was developed to meet the need of National Forest managers for information on projected climate changes at a scale relevant to decision making processes, including Forest Plans.  The maps use state-of-the-art science and are available for every National Forest in the contiguous United States with relevant data coverage. Currently, the map sets include variables related to precipitation, air temperature, snow (including April 1 snow-water equivalent (SWE) and snow residence time), and stream flow.

A 25-year history of forest disturbance and cause in the United States

Science Spotlights Posted on: September 09, 2015
Understanding trends in forest disturbance caused by fire, harvest, stress, weather, and conversion is important for many forest management decisions as well as scientific investigations. After a decade of collaborative work between the Forest Service, NASA, University of Maryland and other partners, the North American Forest Dynamics (NAFD) project has processed historic Landsat data. This effort provides a comprehensive annual, wall-to-wall analysis of U.S. disturbance history over the last 25 years. Substantial progress has been made to also identify specific causal agents through time, and nationwide datasets will soon be available for exploring spatial and temporal patterns in U.S. forests.

Monitoring vegetation greenness with satellite data

Publications Posted on: June 27, 2013
Vegetation greenness can be monitored at 1-km resolution for the conterminous United States through data obtained from the Advanced Very High Resolution Radiometer on the NOAA-11 weather satellites. The data are used to calculate biweekly composites of the Normalized Difference Vegetation Index.

A primer on evaluation and use of natural resource information for corporate data bases

Publications Posted on: February 28, 2013
This primer provides resource inventory specialists with information on how to evaluate existing natural resource information and how to use it in preparing new resource inventortes. Subjects covered indude determining information needs, finding existing lnformation, determining its utility, evaluating Its suitability and quality, and incorporating It into new geographic information systems.

Reserved and roadless forests

Publications Posted on: November 20, 2009
Some 74 million acres of forest land, or 10 percent of all U.S. forest land, are permanently reserved from wood product utilization through statute or administrative designation. A large part of these lands is in wilderness areas, national parks, and national monuments.

Forest soils

Publications Posted on: November 20, 2009
Productive soils are the foundation of sustainable forests throughout the United States. Forest soils are generally subjected to fewer disturbances than agricultural soils, particularly those that are tilled, so forest soils tend to have better preserved A-horizons than agricultural soils.

Timber growth, mortality, and change

Publications Posted on: November 20, 2009
The previous section discussed trends in timber volume. Changes in volume often result from land-use change; that is, land entering or removed from the timber base. On those acres remaining forested, tree growth and mortality are the primary factors for volume change. Annual rates of growth and mortality often differ by species group, ownership, and geographic region.

Mapping forest resources of the United States

Publications Posted on: November 20, 2009
In this chapter, we present a collection of maps designed to portray the composition, structure, ownership, utilization, and spatial patterns of forest resources across the United States. This collection is the first comprehensive compilation of national-scale, forestry-related maps. These maps complement the information presented in the preceding chapters, but the maps and chapters are not directly dependent upon one another.

Timber growth, mortality, and change

Publications Posted on: September 30, 2009
Forest/> resource statistics from the 2000 Resources Planning Act (RPA) Assessment were updated to provide current information on the Nation's forests.