Nitrogen deposition to and cycling in a deciduous forest.

摘要: The project described here seeks to answer questions regarding the role increased nitrogen (N) deposition is playing in enhanced carbon (C) sequestration temperate mid-latitude forests, using detailed measurements from an AmeriFlux tower southern Indiana (Morgan-Monroe State Forest, or MMSF). indicate average atmosphere-surface N flux of approximately 6 mg-N m-2 day-1 during 2000 growing season, with 40% coming dry ammonia (NH3), nitric acid (HNO3), and particle-bound N. Wet throughfall significant canopy uptake (particularly NH4