Forests of Oklahoma, 2014
This resource update provides an overview of forest resources in Oklahoma based on an inventory conducted by the U.S. Forest Service, Forest Inventory and Analysis (FIA) program at the Southern Research Station, in cooperation with Oklahoma Forestry Services. Estimates are based on field data collected using the FIA annualized sample design and are updated yearly, creating a moving average. Where appropriate, the estimates presented in this update compare data from the 2014 measurement year with data reported in 2013 (table 1). The Oklahoma sample plot population in 2014 consists of 7,535 plots for all units, collected across a 5 year cycle in the east (units 1, 2) and a 10-year cycle for the central and west (units 3-7), for a total of 4,959 plots for all units. Growth, removals, and mortality estimates are based solely on units 1 and 2. Prior to 2010, only units 1 and 2 were surveyed; however, all of Oklahoma’s forest land is currently being sampled.