Depth profiles of soil organic carbon isotopes across a lithosequence: implications for drivers of soil δ 13C vertical changes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F22%3A00562763" target="_blank" >RIV/60077344:_____/22:00562763 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.tandfonline.com/doi/full/10.1080/10256016.2022.2044806" target="_blank" >https://www.tandfonline.com/doi/full/10.1080/10256016.2022.2044806</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/10256016.2022.2044806" target="_blank" >10.1080/10256016.2022.2044806</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Depth profiles of soil organic carbon isotopes across a lithosequence: implications for drivers of soil δ 13C vertical changes

Popis výsledku v původním jazyce

To addresshow parent materials are affecting organic carbon dynamics in a soil profile, soils from a lithosequence comprising six parent lithologies under a rangeland ecosystem have been explored at three depth intervals for soil organic carbon (SOC) content and its 13C depth trends. Studied parent materials ranged from metamorphic (foliated: FM and non-foliated: NFM) to sedimentary (clastic carbonate: CCS) to plutonic (intermediate: IP, felsic: FP and intermediate felsic: IFP) geological contexts. The relationship between SOC concentration and its isotopic signatures to a depth of 50 cm in FM, NFM, FP and IFP profiles was well described by the kinetic fractionation of SOC during biodegradation. For CCS and IP lithologies, strong divergence from the Rayleigh equation was observed suggesting that the 13C enrichments in these soils resulted from both mixing different SOC pools and isotope fractionation related to the C mineralization. Results suggest that SOC across the lithosequence goes through different isotopic evolutions resulting from different 13C-enriched inputs and pedogenic properties as described by the extended Rayleigh equation (0 ≤ β C≤ 0.80). These are presumably caused by the bedrock lithology implying that parent material affects C storage and dynamics.

Název v anglickém jazyce

Depth profiles of soil organic carbon isotopes across a lithosequence: implications for drivers of soil δ 13C vertical changes

Popis výsledku anglicky

To addresshow parent materials are affecting organic carbon dynamics in a soil profile, soils from a lithosequence comprising six parent lithologies under a rangeland ecosystem have been explored at three depth intervals for soil organic carbon (SOC) content and its 13C depth trends. Studied parent materials ranged from metamorphic (foliated: FM and non-foliated: NFM) to sedimentary (clastic carbonate: CCS) to plutonic (intermediate: IP, felsic: FP and intermediate felsic: IFP) geological contexts. The relationship between SOC concentration and its isotopic signatures to a depth of 50 cm in FM, NFM, FP and IFP profiles was well described by the kinetic fractionation of SOC during biodegradation. For CCS and IP lithologies, strong divergence from the Rayleigh equation was observed suggesting that the 13C enrichments in these soils resulted from both mixing different SOC pools and isotope fractionation related to the C mineralization. Results suggest that SOC across the lithosequence goes through different isotopic evolutions resulting from different 13C-enriched inputs and pedogenic properties as described by the extended Rayleigh equation (0 ≤ β C≤ 0.80). These are presumably caused by the bedrock lithology implying that parent material affects C storage and dynamics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40104 - Soil science

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Isotopes in Environmental and Health Studies

ISSN

1025-6016

e-ISSN

1477-2639

Svazek periodika

58

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

21

Strana od-do

159-179

Kód UT WoS článku

000763809400001

EID výsledku v databázi Scopus

2-s2.0-85126057349