NLCD 2016 All Rangeland Cover | Multi-Resolution Land Characteristics (MRLC) Consortium

All Rangeland Components (18.8 GB)

Includes all nine components – Shrub, Sagebrush, Bare Ground, Herbaceous, Litter, Big Sagebrush, Annual Herbaceous and Shrub/Sagebrush heights.

Percent Shrub (2.33 GB)

The proportion of shrub canopy in each 30m pixel.

Shrub is a continuous field component encompassing all shrub species discriminated by the presence of woody stems and < 6-m in height.

Percent Sagebrush (1.64 GB)
The proportion of sagebrush canopy in each 30m pixel.

Sagebrush is a continuous field component encompassing almost all species of Sagebrush (Artemisia spp.) including Big Sagebrush (A tridentata spp.), Low Sagebrush (A arbuscular), Black Sagebrush (A nova), Three-tip Sagebrush (A triparta) and Silver Sagebrush (A cana). This component is nested within Shrub as a secondary component. Excludes the low stature prairie sage (A. frigida) and white sagebrush (A. ludoviciana).

Percent Bare Ground (2.74 GB)
The bare ground proportion in each 30m pixel..

Bare Ground is a continuous field component including exposed soil, sand and rocks.

Percent Herbaceous (2.39 GB)
The annual and perennial grass and forb proportion in each 30m pixel.

Herbaceous is a continuous field component consisting of grasses, forbs and cacti which were photosynthetically active at any point in the year of mapping

Percent Annual Herbaceous (0.95 GB)
The annual only grass and forb proportion in each in 30m pixel.

Annual Herbaceous is a continuous field component including grasses and forbs whose life history is complete in one growing season. This component is primarily dominated by annual invasive species including Cheatgrass (Bromus tectorum), Medusahead (Taeniatherum caput-medusae), Red Brome (Bromus rebens), or annual mustards such as Tumble Mustard (Sisymbrium altissimum) and Tansy Mustard (Descurainia pinnata). But may contain substantial native annual herbaceous vegetation at higher elevations and in California. This component is nested within Herbaceous as a secondary component.

Percent Litter (2.07 GB)
The dead plant material proportion in each 30m pixel.

Litter is a continuous field component including dead standing woody vegetation, detached plant organic matter and biological soil crusts.

Percent Big Sagebrush (1.45 MB)
The proportion of big sagebrush canopy in each 30m pixel.

Big Sagebrush is a continuous field component dominated by Big Sagebrush (A tridentata spp.) may include Three-tip Sagebrush (A triparta) and Silver Sagebrush (A cana). This component is nested within Shrub and Sagebrush as a secondary component.

Shrub Height (3.37 GB)
Average height of shrubs in centimeters.

Shrub Height is the average height of all Shrub in centimeters. This component only occurs where the Shrub component has a prediction.

Sagebrush Height (1.94 GB)
Average height of sagebrush in centimeters.

Sagebrush Height is the average height of all Sagebrush in centimeters. This component only occurs where the Sagebrush component has a prediction.

References

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RCMAP – Basemap (2016)

RCMAP – Basemap (2016) Data

Metadata

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NLCD 2021 Now Available

Published Jul 20, 2023

The U.S. Geological Survey (USGS), in association with the Multi-Resolution Land Characteristics (MRLC) Consortium, is pleased to announce the completion and release of the latest epoch of the National Land Cover Database (NLCD) for the conterminous U.S.—NLCD 2021. The MRLC, a consortium of federal agencies who coordinate and generate consistent and relevant land cover information at the national scale for a wide variety of environmental, land management, and modeling applications, have been providing the scientific community with detailed land cover products for more than 30 years. Over that time, NLCD has been one of the most widely used geospatial datasets in the U.S., serving as a basis for understanding the Nation’s landscapes in thousands of studies and applications, trusted by scientists, land managers, students, city planners, and many more as a definitive source of U.S. land cover.

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RCMAP 1985-2021 Fractional Component Time-Series Now Available

Published Dec 01, 2022

The U.S. Geological Survey (USGS), in collaboration with the MRLC consortium and Bureau of Land Management (BLM), is pleased to announce the availability of a new generation of Rangeland, Condition, Monitoring, Assessment, and Projection (RCMAP) fractional component data spanning a 1985-2021 time-series. The new time-series includes yearly cover predictions for 9 components: shrub, sagebrush, non-sagebrush shrub, herbaceous, annual herbaceous, perennial herbaceous, litter, bare ground, and new to this version, tree cover. Trends statistics of the new time-series will be available by Jan 2023. Data are available for download and on the rangelands viewer. The new generation of data update previously released 1985-2020 RCMAP data and are not designed to be backwards compatible (1985-2020 cover predictions are different between versions). While users are encouraged to use the newest generation of data, the previous versions of the time-series data are archived.

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Release of RCMAP Time-Series Trends Statistics

Published Aug 02, 2021

RCMAP has released temporal trends for the 1985-2020 fractional component cover time-series. Temporal patterns in each RCMAP component were evaluated with two approaches, 1) linear trends and 2) a structural change method using a temporal moving window to detect “breaks” and “stable states” in pixel values. The structural change method partitions the time-series into segments of similar slope values, with statistically significant break-points indicating perturbations to the prior trajectory. We provide the following statistics: 1) for each component, each year, the presence/absence of breaks, 2) the slope, p-value, and standard error of the segment occurring in each year, 3) the overall model R2 (quality of model fit to the temporal profile), and 4) an index, Total Change Intensity, reflecting the total amount of change occurring across components in that pixel.

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