Green Vegetation Fraction Maps for Six US Tidal Marshes

2013 to 2015 maps show the fraction of green vegetation in six US tidal marsh regions at 30-meter resolution. The dataset was derived from high-resolution 1-meter classifications of National Agriculture Imagery Program (NAIP) imagery. It is hosted by ORNL_CLOUD and appears on multiple platforms, including NASA Earthdata and Data.gov.

Use Cases

• Assessing wetland health and productivity by analyzing green vegetation fraction within marsh pixels.
• Monitoring changes in marsh extent and vegetation cover for coastal resilience studies.
• Calibrating or validating broader-scale satellite-derived vegetation indices (e.g., NDVI) with high-resolution 1m classification data.
• Modeling carbon storage potential in tidal marshes based on vegetation density estimates.

Strengths

• Provides high-resolution 1m classification data as a source for the 30m fractional maps.
• Covers six distinct and ecologically important estuarine regions across the conterminous United States.
• Derived from standardized National Agriculture Imagery Program (NAIP) images for the 2013-2015 period.

Limitations

• Specific column names, row counts, and dataset size are not provided by any source.
• Conflicting last updated dates exist: one source lists 2015-08-27, while others list 2026-03-13 (likely a metadata refresh).
• The license is ambiguously listed as 'other-license-specified'; users must investigate specific terms.

Provenance

Source

ORNL_CLOUD

Collection Method

Derived from a 1m classification of 2013-2015 NAIP images, calculating class percentages within Landsat pixel extents.

Time Range

2013 to 2015

Freshness

2026-03 13 01:39:19.811216

Geography

Six estuarine regions of the conterminous US: Cape Cod, MA; Chesapeake Bay, MD; Everglades, FL; Mississippi Delta, LA; San Francisco Bay, CA; and Puget Sound, WA.