Titel
Nitrogen processes in terrestrial ecosystems
Verfasser
Klaus Butterbach-Bahl (*)
Per Gundersen
Per Ambus
Jürgen Augustin
Claus Beier
Pascal Boeckx
Michael Dannenmann
Barbara Kitzler
Sophie Zechmeister-Boltenstern
Erscheinungsort
Cambridge
Verlag
Cambridge University Press
Erscheinungsjahr
2011
Material
Artikel aus einer ZeitschriftUnselbständiges Werk
Standardsignatur
16655
Datensatznummer
200175005
Quelle
The European nitrogen assessment : sources, effects and policy perspectives; S. 99-125
Abstract
Nitrogen cycling in terrestrial ecosystems is complex and includes microbial processes such as mineralization, nitrification and denitrification, plant pyhsiological processes (e.g. nitrogen uptake and assimilation) and physiochemical processes (leaching, volatilization). In order to understand the challanges nitrogen puts to the environment, a through understanding of all these processes is needed. This chapter provides an overview about processes relating to ecosystem nitrogen input and output and turnover. On the basis of examples and literature reviews, current knowlege on the effects of nitrogen on ecosystem functions is summarized, including plant and microbial processes, nitrate leaching and trace gas emissions. Nitrogen cycling and nitrogen stocks in terrestrial ecosystems significantly differ between different ecosystem types (arable, grassland, chrubland, forests).