The 90-ha block of the stand is even-aged (planted in 1983) and was established from seedlings following clear-cut and burn at the site. Loblolly pine trees from a Piedmont provenance were planted at 2m x 2.4m (6' x 8') spacing, and natural regeneration added a large number of additional species. Density of co-dominant pines in the study portion of the stand is approximately 1600 trees ha-1 and total tree density of dominant and subcanopy hardwood trees is 3700 trees ha-1. The subcanopy and understory are diverse with more than 50 species (mostly woody) but dominated by sweetgum (Liquidambar styraciflua), elm (Ulmus alata), red maple (Acer rubrum), dogwood (Cornus florida) and oak-hickory species. Soil pH is around 6.0, and nitrogen (~1.1% N) and phosphorus (~0.3% P) in the pine foliage tend to be at the middle range for mid-rotation loblolly pine in the region. The site index is between 21 and 22 m at age 25.
A table of the exact locations of the research towers, with maps.
A text file listing all the trees and their coordinates.
A text file summarizing the tree species in each ring.
Ring maps, showing trees and monitoring equipment.
Full soil profile from the FACE site.