This dataset contains polygons which represent the USGS quarter quadrangle map series.

This dataset contains polygons which represent the USGS quarter quadrangle map series.

Mapped polygons at 1:7.5 million scale contain many vegetation types. The map portrays the zonal vegetation within each mapped polygon. Zonal sites are areas where the...

The Alaska Arctic Tundra Vegetation Map (AATVM) is a geoecological map of the Arctic Tundra within Alaska. It includes areas north and west of the forest boundary and excludes...