Rangeland vegetation-cover products from NTSG at the University of Montana, aggregated to H3. Everything here is licensed CC0 1.0 Universal (public domain dedication) by the producers; please cite Allred et al. (2021), https://doi.org/10.1111/2041-210X.13564.
Two different upstream products live in this bucket, and they do not cover the same area.
Annual vs perennial. Annual forbs and grasses include invasive annuals such as cheatgrass; perennial forbs and grasses are the native perennial herbaceous cover that invasion tends to displace. The two are close to ecological opposites, so check which one you are reading.
The two extents differ. rap-afg-cover and rap-pfg-cover cover the conterminous United
States (6 h0 partitions). rap-arte and rap-iag come from a 10 m Sentinel-2 product published
only for UTM zones 10–13, so they cover the western US out to about 101° W (4 h0 partitions) and
have no data further east. An empty result east of that line is the product's extent, not a gap.
Suitability. The producers note these estimates are produced across a broad region but are primarily intended for rangeland ecosystems, and may be less reliable in other ecosystems such as forests and agricultural land.
Each collection has one row per H3 cell at resolution 10, holding the area-weighted mean percent
cover. Parent columns h9, h8 and h0 are present for rollups and joins; h8 is the resolution
shared with the rest of the catalog.
Compare the two vegetation-cover variables cell by cell:
These are single-band rasters, so they render as a raster source through TiTiler with a colormap.
There is no PMTiles layer and therefore no source-layer to set.
Swap the filename for rap-pfg-cover-cog.tif, rap-arte-cog.tif or rap-iag-cog.tif for the other
layers. Values are percent cover from 0 to 100, so rescale=0,100 is the right range for all four;
255 marks no data and renders transparent.
raw/ holds the staged upstream files these layers were built from. Upstream republishes each
annual edition in place at a stable URL with no dated archive, so the staged copies plus their
checksums are the citable record. Access dates, sizes and checksums are recorded in each
collection's STAC description.