Changes in canopy processes following whole-forest canopy nitrogen fertilization of a mature spruce-hemlock forest

Author

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• Gaige, E.
• Dail, D.B.
• Hollinger, D.Y.
• Davidson, E.A.
• Fernandez, I.J.
• Sievering, H.
• White, A.
• Halteman, W.

Year Published

2007

Source

Ecosystems. 10: 1133-1147.

Abstract

Most experimental additions of nitrogen to forest ecosystems apply the N to the forest floor, bypassing important processes taking place in the canopy, including canopy retention of N and/or conversion of N from one form to another. To quantify these processes, we carried out a large-scale experiment and determined the fate of nitrogen applied directly to a mature coniferous forest canopy in central Maine (18-20 kg N ha^-1 y^-1 as NH₄NO₃ applied as a mist using a helicopter).

Citation

Gaige, E.; Dail, D.B.; Hollinger, D.Y.; Davidson, E.A.; Fernandez, I.J.; Sievering, H.; White, A.; Halteman, W. 2007. Changes in canopy processes nitrogen fertilization of a mature spruce-hemlock forest. Ecosystems. 10: 1133-1147.

Last updated on: July 31, 2009

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https://www.nrs.fs.fed.us/pubs/3763