"This USDA website will not be updated during a lapse in federal funding. Content on this website will not be current or maintained until funding issues have been resolved. However, if there is information that affects security, life, and property, this website will continue to update that information during a funding lapse."

Home » Products » Publications » Complex forest dynamics indicate potential for slowing carbon accumulation in the southeastern United States
 

Complex forest dynamics indicate potential for slowing carbon accumulation in the southeastern United States


Over the past century forest regrowth in Europe and North America expanded forest carbon (C) sinks and offset C emissions but future C accumulation is uncertain. Policy makers need insights into forest C dynamics as they anticipate emissions futures and goals. We used land use and forest inventory data to estimate how forest C dynamics have changed in the southeastern United States and attribute changes to land use, management, and disturbance causes. From 2007-2012, forests yielded a net sink of C because of net land use change (+6.48 Tg C yr -1 ) and net biomass accumulation (+75.4 Tg C yr -1 ). Forests disturbed by weather, insect/disease, and fire show dampened yet positive forest C changes (+1.56,+1.4,+5.48 Tg C yr -1 , respectively). Forest cutting caused net decreases in C(-76.7 TgC yr -1 ) but was offset by forest growth (+143.77 Tg C yr -1 ). Forest growth rates depend on age or stage of development and projected C stock changes indicate a gradual slowing of carbon accumulation with anticipated forest aging (a reduction of 9.5% over the next five years). Additionally, small shifts in land use transitions consistent with economic futures resulted in a 40.6% decrease in C accumulation.

2015

Coulston, John W.
Wear, David N.
Vose, James M.

Scientific Journal (JRNL)

Scientific Reports 5: 8002. 6 p.

Coulston, John W.; Wear, David N.; Vose, James M. 2015 Complex forest dynamics indicate potential for slowing carbon accumulation in the southeastern United States. Scientific Reports 5: 8002. 6 p.


Refine Search

 
Personal tools