Isotopic evidence for nitrogen mobility in peat bogs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10282863" target="_blank" >RIV/00216208:11320/14:10282863 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00025798:_____/14:00000239

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.gca.2014.02.021" target="_blank" >http://dx.doi.org/10.1016/j.gca.2014.02.021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.gca.2014.02.021" target="_blank" >10.1016/j.gca.2014.02.021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Isotopic evidence for nitrogen mobility in peat bogs

Popis výsledku v původním jazyce

Elevated nitrogen (N) input may reduce carbon (C) storage in peat. Under low atmospheric deposition, most N is bound in the moss layer. Under high N inputs, Sphagnum is not able to prevent penetration of dissolved N to deeper peat. Nitrogen may become available to the roots of invading vascular plants. The concurrent oxygenation of deeper peat layers, along with higher supply of labile organic C, may enhance microbial decomposition and lead to peat thinning. The resulting higher emissions of greenhousegases may accelerate global warming. Seepage of N to deeper peat has never been quantified. Here we present evidence for post-depositional mobility of atmogenic N in peat, based on natural-abundance N isotope ratios. We conducted a reciprocal peat transplant experiment between two Sphagnum-dominated peat bogs in the Czech Republic (Central Europe), differing in anthropogenic N inputs. The northern site VJ received as much as 33 kg N ha(-1) yr(-1) via spruce canopy throughfall. The southe

Název v anglickém jazyce

Isotopic evidence for nitrogen mobility in peat bogs

Popis výsledku anglicky

Elevated nitrogen (N) input may reduce carbon (C) storage in peat. Under low atmospheric deposition, most N is bound in the moss layer. Under high N inputs, Sphagnum is not able to prevent penetration of dissolved N to deeper peat. Nitrogen may become available to the roots of invading vascular plants. The concurrent oxygenation of deeper peat layers, along with higher supply of labile organic C, may enhance microbial decomposition and lead to peat thinning. The resulting higher emissions of greenhousegases may accelerate global warming. Seepage of N to deeper peat has never been quantified. Here we present evidence for post-depositional mobility of atmogenic N in peat, based on natural-abundance N isotope ratios. We conducted a reciprocal peat transplant experiment between two Sphagnum-dominated peat bogs in the Czech Republic (Central Europe), differing in anthropogenic N inputs. The northern site VJ received as much as 33 kg N ha(-1) yr(-1) via spruce canopy throughfall. The southe

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DD - Geochemie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP504%2F12%2F1782" target="_blank" >GAP504/12/1782: Vztah mezi atmosférickou depozicí dusíku a akumulací dusíku v ombrotrofních mokřadech: Izotopová studie za užití 210Pb a 15N</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geochimica et Cosmochimica Acta

ISSN

0016-7037

e-ISSN

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Svazek periodika

133

Číslo periodika v rámci svazku

Neuveden.

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

351-361

Kód UT WoS článku

000334833600021

EID výsledku v databázi Scopus

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