Tree dieback and related changes in nitrogen dynamics modify the concentrations and proportions of cations on soil sorption complex

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F19%3A43899099" target="_blank" >RIV/60076658:12310/19:43899099 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60077344:_____/19:00504987

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S1470160X18308045?token=3AAFE782383EB225344CB12483619824BE8C03EC81BDFBA1BB24E2700F57AC162A06E8FE127CE77DB2F09B3833A85127" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S1470160X18308045?token=3AAFE782383EB225344CB12483619824BE8C03EC81BDFBA1BB24E2700F57AC162A06E8FE127CE77DB2F09B3833A85127</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ecolind.2018.10.032" target="_blank" >10.1016/j.ecolind.2018.10.032</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tree dieback and related changes in nitrogen dynamics modify the concentrations and proportions of cations on soil sorption complex

Popis výsledku v původním jazyce

The soil sorption complex in an unmanaged mountain forest (Plane Lake catchment, Czech Republic) changed substantially during the decade following forest dieback in 2004-2008, when a bark beetle outbreak killed &gt; 90% of mature Norway spruce stands. All downfallen biomass remained in the catchment. Leaching of Ca2+, Mg2+, K+, H+ and ionic Al from the catchment increased after tree dieback and was predominantly coupled with nitrate export. However, the proportions and amounts of individual cations retained on the soil sorption complex and their contribution to leaching differed in time. The average concentration of exchangeable nonacidic cations (base cations and NH4+) doubled from 119 to 247 mu eq g(-1) in the upper similar to 20 cm of soil because their release from dead biomass exceeded losses via leaching and tree uptake. The surplus of non-acidic cations replaced almost 50% of the exchangeable acidity (Al3+ and H+), which was leached out from the soil sorption complex to receiving waters. It was mainly exchangeable Ca2+ that drove the increase of soil base saturation and the decrease of exchangeable acidity. Its concentration continually rose, as well as its contribution to the nonacidic cations (up to 85%). Besides, exchangeable NH4+ played an important role in the first 4 years following dieback, when its proportion increased to similar to 10-20%. K+ only significantly contributed in the first two years. Consequently, tree dieback substantially increased soil base saturation with cations released from dead biomass and thus accelerated soil recovery from long-term acidification. Described changes in soil chemistry represent natural conditions and the uppermost limit of an ecosystem response to all possible management practices based on biomass removal in similar mountain forest areas.

Název v anglickém jazyce

Tree dieback and related changes in nitrogen dynamics modify the concentrations and proportions of cations on soil sorption complex

Popis výsledku anglicky

The soil sorption complex in an unmanaged mountain forest (Plane Lake catchment, Czech Republic) changed substantially during the decade following forest dieback in 2004-2008, when a bark beetle outbreak killed &gt; 90% of mature Norway spruce stands. All downfallen biomass remained in the catchment. Leaching of Ca2+, Mg2+, K+, H+ and ionic Al from the catchment increased after tree dieback and was predominantly coupled with nitrate export. However, the proportions and amounts of individual cations retained on the soil sorption complex and their contribution to leaching differed in time. The average concentration of exchangeable nonacidic cations (base cations and NH4+) doubled from 119 to 247 mu eq g(-1) in the upper similar to 20 cm of soil because their release from dead biomass exceeded losses via leaching and tree uptake. The surplus of non-acidic cations replaced almost 50% of the exchangeable acidity (Al3+ and H+), which was leached out from the soil sorption complex to receiving waters. It was mainly exchangeable Ca2+ that drove the increase of soil base saturation and the decrease of exchangeable acidity. Its concentration continually rose, as well as its contribution to the nonacidic cations (up to 85%). Besides, exchangeable NH4+ played an important role in the first 4 years following dieback, when its proportion increased to similar to 10-20%. K+ only significantly contributed in the first two years. Consequently, tree dieback substantially increased soil base saturation with cations released from dead biomass and thus accelerated soil recovery from long-term acidification. Described changes in soil chemistry represent natural conditions and the uppermost limit of an ecosystem response to all possible management practices based on biomass removal in similar mountain forest areas.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Ecological Indicators

ISSN

1470-160X

e-ISSN

—

Svazek periodika

97

Číslo periodika v rámci svazku

FEB 2019

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

319-328

Kód UT WoS článku

000464891000033

EID výsledku v databázi Scopus

2-s2.0-85055083763