NDLI: Nitrogen turnover in fresh Douglas fir litter directly after additions of moisture and inorganic nitrogen

Content Provider	Springer Nature Link
Author	Raat, Klaasjan J. Tietema, Albert Verstraten, Jacobus M.
Copyright Year	2009
Abstract	The effects of wetting and drying and inorganic nitrogen (N) addition on carbon (C) and N turnover in fresh Douglas fir litter (Speuld forest, the Netherlands) were investigated. Litter was incubated for 9 days in the laboratory, receiving different moisture and N addition treatments. Following the additions, a series of reactions were observed of which most notable were a rapid retention of added ammonium and nitrate (NO3-) and a sudden increase in CO$_{2}$ respiration. For the rewetted-and-moist incubations, respiration levels remained elevated, N was net immobilized and nitrous oxide (N$_{2}$O) production increased throughout the experiment. About 80% of the NO3- produced was lost again as N$_{2}$O. In the rewetted-and-dried incubations, respiration decreased during the drying phase; no clear patterns in N mineralization were detected; and N$_{2}$O production remained at constant levels, but still resulted in gaseous loss for half of the NO3- net produced. The experiments thus revealed two important NO3- sinks in LF1 litter, namely rapid retention of added NO3- and gaseous loss as N$_{2}$O. The maximum NO3- loss via these sinks was estimated at 2 kg-N ha$^{-1}$ yr$^{-1}$, which is small compared to annual NO3- leaching at 90 cm soil depth (31 kg-N ha$^{-1}$ yr$^{-1}$).
Starting Page	115
Ending Page	126
Page Count	12
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	330
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-10-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Douglas fir Litter Drying and rewetting Nitrogen transformations Respiration Nitrous oxide Ecology Plant Physiology Soil Science & Conservation Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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