adjacent to atmospheric boundary layer area of sedge- and forb-dominated herbaceous vegetation nlcd2011 sedge/herbaceous This class is in need of refinement, particularly in linking to other entities in the ontology. However, it is suitable for use in annotating remotely sensed land types. According to the NLCD 2011, at least 80% of these areas are covered by sedge or forbs. Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition. The NLCD description also notes that land covered by sedge tundra and sedge tussock tundra are subsumed in this category. The original definition notes that this is intended as an "Alaska only" category. NLCD:72 An area of a planet's surface which is primarily covered by sedges or forbs, possibly interpersed with grasses or grass-like plants. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction. bush area