Lund et al. FIA crews gather field observations at approximately 1.5 mile intervals and have been doing so at approximately 10 year intervals since the 1970's. Crews revisit and permanently mark forested locations at 3 mile intervals at the intersection of a cardinal direction grid with additional plots on National Forest land. Regional forest fragmentation effects on bottomland hardwood community types and resource values. Attribute accuracy is described , where present, with each attribute defined in the Entity and Attribute Section.
Point features present.
Included are 6935 plots with field-verified photo interpretation, and 2500 plots field verified as forested with additional observations. A description of each of the variables follows. St. James 33 E. Baton Rouge 95 St. John Bapt. Lake 157 Shelby 97 Lauderdale 167 Tipton YEAR Survey year. Selected year indicating when most of the State's data were collected.