107
Views
12
CrossRef citations to date
0
Altmetric
Original Articles

Nitrogen cycling in Pinus sylvestris stands exposed to different nitrogen inputs

, &
Pages 38-47 | Received 24 Feb 2003, Accepted 22 Oct 2003, Published online: 18 Feb 2007
 

Abstract

The objective of this study was to quantify the effects of high nitrogen (N) inputs on N cycling in a 35–45-yr-old Scots pine (Pinus sylvestris L.) forest. Nitrogen was added annually (single doses) as NH4NO3 in doses of 0 (N0), 30 (N1) and 90 (N2) kg N ha−1 yr−1. The only N input to the N0 plots was atmospheric deposition of 10 kg N ha−1 yr−1. The N cycle in these plots was tight, with almost complete retention of the incoming N. In the N1 plots the N retention was 83% after 9 yrs of N addition. The trees were the major sink, but the soil also contributed to the N retention. In the N2 plots the N retention was 63%, being mainly accounted for by accumulation in the soil. The leaching of N from the N2 stands was as high as 35 kg N ha−1 yr−1. The N2 system was N saturated.

Acknowledgments

This work was funded by the Research Council of Norway. Thanks to Arne O. Stuanes for valuable discussions and comments on the manuscript.

Notes

Vestgarden, L. S. 1 , Nilsen, P. 2 and Abrahamsen, G. 3 (1Norwegian Centre for Soil and Environmental Research, Frederik A. Dahls vei 20, NO-1432 Ås, Norway, 2Norwegian Forest Research Institute, Høgskoleveien 12, NO-1432 Ås, Norway, 3Department of Plant and Environmental Sciences, Agricultural University of Norway, P.O. Box 5028, NO-1432 Ås, Norway). Nitrogen cycling in Pinus sylvestris stands exposed to different nitrogen inputs.

Additional information

Notes on contributors

Live Semb Vestgarden

Vestgarden, L. S. 1 , Nilsen, P. 2 and Abrahamsen, G. 3 (1Norwegian Centre for Soil and Environmental Research, Frederik A. Dahls vei 20, NO-1432 Ås, Norway, 2Norwegian Forest Research Institute, Høgskoleveien 12, NO-1432 Ås, Norway, 3Department of Plant and Environmental Sciences, Agricultural University of Norway, P.O. Box 5028, NO-1432 Ås, Norway). Nitrogen cycling in Pinus sylvestris stands exposed to different nitrogen inputs.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.