Optimizing Nitrogen Management in Food and Energy Production and Environmental Protection: 2nd International Nitrogen Conference 2001View this Special Issue
Research Article | Open Access
Sara C. Pryor, Rebecca J. Barthelmie, Margaret Carreiro, Melissa L. Davis, Anne Hartley, Bjame Jensen, Andrew Oliphant, Melissa J. C. Randolph, Justin T. Schoof, "Nitrogen Deposition to and Cycling in a Deciduous Forest", The Scientific World Journal, vol. 1, Article ID 912020, 10 pages, 2001. https://doi.org/10.1100/tsw.2001.372
Nitrogen Deposition to and Cycling in a Deciduous Forest
The project described here seeks to answer questions regarding the role increased nitrogen (N) deposition is playing in enhanced carbon (C) sequestration in temperate mid-latitude forests, using detailed measurements from an AmeriFlux tower in southern Indiana (Morgan-Monroe State Forest, or MMSF). The measurements indicate an average atmosphere-surface N flux of approximately 6 mg-N m-2 day-1 during the 2000 growing season, with approximately 40% coming from dry deposition of ammonia (NH3), nitric acid (HNO3), and particle-bound N. Wet deposition and throughfall measurements indicate significant canopy uptake of N (particularly NH4+) at the site, leading to a net canopy exchange (NCE) of –6 kg-N ha-1 for the growing season. These data are used in combination with data on the aboveground C:N ratio, litterfall flux, and soil net N mineralization rates to indicate the level of potential perturbation of C sequestration at this site.