Nitrogen nutrition of trees and temperate forests - the significance of nitrogen availability in pedosphere and atmosphere
Abstract: Nitrogen (N) is an essential nutrient that is highly abundant as N2 in the atmosphere and also as various mineral and organic forms in soils. However, soil N bioavailability often limits the net primary productivity of unperturbed temperate forests with low atmospheric N input. This is because most soil N is part of polymeric organic matter, which requires microbial depolymerization and mineralization to render bioavailable N forms such as monomeric organic or mineral N. Despite this N limitation, many unfertilized forest ecosystems on marginal soil show relatively high productivity and N uptake comparable to agricultural systems. The present review article addresses the question of how this high N demand is met in temperate forest ecosystems. For this purpose, current knowledge on the distribution and fluxes of N in marginal forest soil and the regulation of N acquisition and distribution in trees are summarized. The related processes and fluxes under N limitation are compared with those of forests exposed to high N loads, where chronic atmospheric N deposition has relieved N limitation and caused N saturation. We conclude that soil microbial biomass is of decisive importance for nutrient retention and provision to trees both in high and low N ecosystems
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Anmerkungen
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Forests. 6, 8 (2015), 2820-2835, DOI 10.3390/f6082820, issn: 1999-4907
IN COPYRIGHT http://rightsstatements.org/page/InC/1.0 rs
- Klassifikation
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Biowissenschaften, Biologie
- Ereignis
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Veröffentlichung
- (wo)
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Freiburg
- (wer)
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Universität
- (wann)
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2015
- Urheber
- DOI
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10.3390/f6082820
- URN
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urn:nbn:de:bsz:25-freidok-132410
- Rechteinformation
-
Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
-
25.03.2025, 13:49 MEZ
Datenpartner
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Beteiligte
- Rennenberg, Heinz
- Dannenmann, Michael
- Albert-Ludwigs-Universität Freiburg. Professur für Baumphysiologie
- Albert-Ludwigs-Universität Freiburg. Institut für Forstwissenschaften
- Albert-Ludwigs-Universität Freiburg. Fakultät für Umwelt und Natürliche Ressourcen
- Albert-Ludwigs-Universität Freiburg
- Universität
Entstanden
- 2015
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