Nitrogen limitation controls carbon partitioning.In a nitrogen fertilization experiment in an adjacent sweetgum stand, we found that the increased production of ephemeral roots under elevated [CO2] was most likely a mechanism for greater nitrogen acquisition in response to nitrogen limitation within the stand.
|
|
Publications.Iversen CM, Norby RJ. 2008. Nitrogen limitation in a sweetgum plantation: Implications for carbon allocation and storage. Canadian Journal of Forest Research 38: 1021-1032.
|
Related Publications.Finzi AC, Norby RJ, Calfapietra C, Gallet-Budynek A, Gielen B, Holmes WE, Hoosbeek MR, Iversen CM, Jackson RB, Kubiske MB, Ledford J, Liberloo M, Oren R, Polle A, Pritchard S, Zak DR, Schlesinger WH, Ceulemans R. 2007. Increases in nitrogen uptake rather than nitrogen-use efficiency support higher rates of temperate forest productivity under elevated CO2. Proceedings of the National Academy of Sciences, USA 104: 14014-14019.
Norby RJ, Iversen CM. 2006. Nitrogen uptake, distribution, turnover, and efficiency of use in a CO2-enriched sweetgum forest. Ecology 87: 5-14. |
Data Sets.See freely-available ORNL FACE data sets here: https://facedata.ornl.gov/ornl/.
|
This research was funded by the Office of Biological and Environmental Research in the U.S. Department of Energy's Office of Science.