Research Questions

Research Questions
FACE Investigators
Ring Maps

The Aspen FACE Experiment has been designed to address the following questions:

Where is the missing carbon from global carbon models?  Is it being sequestered by forests?
Will more or less CO2 be sequestered by forest trees as CO2 levels rise?
Are forests net carbon sources or sinks? Do they change over time?
Is carbon sequestered by trees stored for long time periods in the soil?
Will elevated CO2 alleviate other stresses (e.g. ozone, drought, low fertility)?
Will our forests become more or less productive over time under elevated CO2?
How will elevated CO2 affect insect and disease interactions with trees?
How do CO2 and the greenhouse gas ozone interact?

The Northern Forest Ecosystem Experiment (NFEE) is funded by the US Forest Service. The Aspen FACE Experiment is funded principally by the U.S. Department of Energy's Office of Biological and Environmental Research. Additional support is from the USFS Global Change Program, Michigan Technological University, the Canadian Forest Service and the USFS Northern Research Station.
For more information on this project, contact Dr. Andrew J. Burton (Michigan Technological University) at (906) 487-2566 or, or Dr. Mark E. Kubiske (Northern Research Station) at (715) 362-1108 or
For questions or suggestions regarding this website, please contact Wendy Jones at
Last updated: November, 2012