Forests of Illinois, 2016

This update provides an overview of forest resources in Illinois following an inventory by the U.S. Forest Service, Forest Inventory and Analysis program, Northern Research Station. Estimates are derived from field data collected using an annualized sample design and are updated yearly. Estimates of current variables such as area, volume, and biomass are based on 5,991 plots measured in 2011-2016. Change variables such as net growth, removals, and mortality are based on 5,915 plots measured in 2006-2011 and resampled in 2011-2016. See Bechtold and Patterson (2005), O'Connell et al. (2014), Gormanson et al. (2017) for more details.