Nitrogen availability in Norway spruce forest floor - the effect of forest defoliation induced by bark beetle infestation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F10%3A00011889" target="_blank" >RIV/60076658:12310/10:00011889 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60077344:_____/10:00360305

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Nitrogen availability in Norway spruce forest floor - the effect of forest defoliation induced by bark beetle infestation

Popis výsledku v původním jazyce

The objective was to evaluate whether lower nitrogen (N) immobilization by spruce trees (Picea abies) or higher microbial N mineralization in the soil is the main mechanism changing the soil N balance after forest defoliation caused by bark beetle. We measured in situ mineral N availability using ion exchangers, net N mineralization (N-miner, ammonification and nitrification) and N content in microbial biomass (N-microb) in the forest floor of infested and control plots in an unmanaged area of The Bohemian Forest National Park. In situ N availability already increased before the defoliation culminated, which affirms the primary effect of reduced N immobilization by vegetation. N mineralization was enhanced after maximum forest defoliation (2 vs. 30 mug N g(-1) d(-1)). The contribution of N-miner to in situ N availability was supported by the correlations found between in situ mineral N availability and N-miner/N-microb and N-miner/C-miner ratios. The influence of litter input with low

Název v anglickém jazyce

Nitrogen availability in Norway spruce forest floor - the effect of forest defoliation induced by bark beetle infestation

Popis výsledku anglicky

The objective was to evaluate whether lower nitrogen (N) immobilization by spruce trees (Picea abies) or higher microbial N mineralization in the soil is the main mechanism changing the soil N balance after forest defoliation caused by bark beetle. We measured in situ mineral N availability using ion exchangers, net N mineralization (N-miner, ammonification and nitrification) and N content in microbial biomass (N-microb) in the forest floor of infested and control plots in an unmanaged area of The Bohemian Forest National Park. In situ N availability already increased before the defoliation culminated, which affirms the primary effect of reduced N immobilization by vegetation. N mineralization was enhanced after maximum forest defoliation (2 vs. 30 mug N g(-1) d(-1)). The contribution of N-miner to in situ N availability was supported by the correlations found between in situ mineral N availability and N-miner/N-microb and N-miner/C-miner ratios. The influence of litter input with low

Druh

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

CEP obor

DF - Pedologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Boreal Environment Research

ISSN

1239-6095

e-ISSN

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Svazek periodika

15

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

FI - Finská republika

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

000286086900003

EID výsledku v databázi Scopus

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