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Linking thermogravimetric data with soil organic carbon fractions

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F20%3APU137545" target="_blank" >RIV/00216305:26310/20:PU137545 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://www.sciencedirect.com/science/article/pii/S0016706119317458" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0016706119317458</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.geoderma.2019.114124" target="_blank" >10.1016/j.geoderma.2019.114124</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Linking thermogravimetric data with soil organic carbon fractions

  • Popis výsledku v původním jazyce

    Different soil fractionation approaches are frequently used to separate soil organic carbon (SOC) pools of different turnover time and shed light on soil carbon dynamics. However, these methods are laborious and time consuming. Thermogravimetry might be an alternative. Previous studies revealed relationships between soil organic matter (SOM), total nitrogen, clay content, and soil respiration and thermogravimetry (TG) data represented by TG indicators (mass loss in 10 degrees C intervals) and TG fractions (mass loss in larger temperature intervals). In this work, both TG indicators and fractions were correlated with the contents of SOC fractions representing different turnover times. The fractions we used were particulate organic carbon, dissolved organic carbon, organic C in the sand fraction and in stable aggregates, organic C attached to silt and clay particles and a chemically resistant fraction (< 63 mu m and not oxidizable by NaOCl). Fractionation and thermogravimetry was applied to 144 samples from arable and grassland top- and subsoils. The results revealed that both TG indicators and fractions or their combinations correlated with SOC fractions in grassland topsoils (R-2 between = 0.70-0.92, p < 0.001 except for the chemically resistant fraction), while the correlation with SOC fractions in arable soils were significantly lower (R-2 between 0.36 and 0.72, p < 0.001). No correlations were observed between TG data and SOC fractions in subsoils of arable and grassland soils. Importantly, most of the correlations were observed in soils in which carbon content correlated with TG indicator between 340 and 350 degrees C. This TG indicator can be used as a differentiator for the application of developed equations for modeling the functional SOC fractions of different turnover times in various types of soils. Thermogravimetry is not able to replace classical fractionation schemes. However, the results showed that thermogravimetry can be an additional tool to assess

  • Název v anglickém jazyce

    Linking thermogravimetric data with soil organic carbon fractions

  • Popis výsledku anglicky

    Different soil fractionation approaches are frequently used to separate soil organic carbon (SOC) pools of different turnover time and shed light on soil carbon dynamics. However, these methods are laborious and time consuming. Thermogravimetry might be an alternative. Previous studies revealed relationships between soil organic matter (SOM), total nitrogen, clay content, and soil respiration and thermogravimetry (TG) data represented by TG indicators (mass loss in 10 degrees C intervals) and TG fractions (mass loss in larger temperature intervals). In this work, both TG indicators and fractions were correlated with the contents of SOC fractions representing different turnover times. The fractions we used were particulate organic carbon, dissolved organic carbon, organic C in the sand fraction and in stable aggregates, organic C attached to silt and clay particles and a chemically resistant fraction (< 63 mu m and not oxidizable by NaOCl). Fractionation and thermogravimetry was applied to 144 samples from arable and grassland top- and subsoils. The results revealed that both TG indicators and fractions or their combinations correlated with SOC fractions in grassland topsoils (R-2 between = 0.70-0.92, p < 0.001 except for the chemically resistant fraction), while the correlation with SOC fractions in arable soils were significantly lower (R-2 between 0.36 and 0.72, p < 0.001). No correlations were observed between TG data and SOC fractions in subsoils of arable and grassland soils. Importantly, most of the correlations were observed in soils in which carbon content correlated with TG indicator between 340 and 350 degrees C. This TG indicator can be used as a differentiator for the application of developed equations for modeling the functional SOC fractions of different turnover times in various types of soils. Thermogravimetry is not able to replace classical fractionation schemes. However, the results showed that thermogravimetry can be an additional tool to assess

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    40104 - Soil science

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/LO1211" target="_blank" >LO1211: Centrum materiálového výzkumu na FCH VUT v Brně - udržitelnost a rozvoj</a><br>

  • Návaznosti

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Ostatní

  • Rok uplatnění

    2020

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název periodika

    GEODERMA

  • ISSN

    0016-7061

  • e-ISSN

    1872-6259

  • Svazek periodika

    362

  • Číslo periodika v rámci svazku

    114124

  • Stát vydavatele periodika

    NL - Nizozemsko

  • Počet stran výsledku

    8

  • Strana od-do

    1-8

  • Kód UT WoS článku

    000514019700008

  • EID výsledku v databázi Scopus