Us Forest Type Map

Individual tree species parameter maps. The individual tree species parameter maps (itsp) were developed to support the national insect and disease risk map (nidrm) since insect and disease risk is often driven by the density of a given species. National report on forest resources forests in the south, where timber production is highest, have the lowest average age.

The northeast quadrant was published in 1937; This forest community classification scheme is based upon the relative abundance of tree species, which is indicative of the amount of available light, water, and soil nutrients each use. Sampson {the stability of aspen as a type, 1916) believes that aspen is a temporary type, replaced, slowly but surely, by conifers.

The northeast quadrant was published in 1937;

There are 28 national forest type groups. The map construction method is simple, consisting of estimating the volume, numbers of trees, or basal area of trees using forested. This forest community classification scheme is based upon the relative abundance of tree species, which is indicative of the amount of available light, water, and soil nutrients each use. Our maps motor vehicle use maps (mvum) identify roads, trails, and areas designated for motor vehicle use.