AustralieFrV1, PascalFrancis, Corpus, bibRecord, 003029

Carbon and N turnover in moist sandy soil following short exposure to a range of high soil temperature regimes

Identifieur interne : 003029 ( PascalFrancis/Corpus ); précédent : 003028; suivant : 003030

Carbon and N turnover in moist sandy soil following short exposure to a range of high soil temperature regimes

Auteurs : J. Luxh I ; I. R. P. Fillery ; S. Recous ; L. S. Jensen

Source :

Australian journal of soil research [ 0004-9573 ] ; 2008.

RBID : Pascal:09-0081619

Descripteurs français

Pascal (Inist)
- Carbone, Turnover, Humidité sol, Exposition, Haute température, Température sol, Régime thermique, Science terre, Science du sol, Sol sableux, Texture.

English descriptors

KwdEn :
- Earth science, Soil science, Soil temperature, Turnover, carbon, exhibits, high temperature, sandy soils, soil moisture, textures, thermal regime.

Abstract

Laboratory experiments were undertaken to examine the effects of high soil temperatures on N biotransformations in sandy soils. Soils were incubated at 30°, 40°, 50°, and 60°C for 2 days, before all treatments were kept at 30°C for up to 41 days. Another laboratory experiment evaluated the effect of different cycles of exposure to 50° and 30°C, including frequency and duration of exposure to 50°C, to assess the sensitivity of N biotransformations to temporary increases in temperature in the high range. CO₂-C production, soil microbial biomass-C, gross N mineralisation, gross N immobilisation, and potential gross nitrification were measured. Gross N mineralisation and CO₂-C production increased with temperature (in the range 30°-50°C) and exhibited a Q₁₀-relationship close to 2. Between 50° and 60°C, Q₁₀ was closer to 2.8. The increase in gross N mineralisation and CO₂-C production after exposure to 50° and 60°C is attributed to the decomposition of dead microbial biomass by the viable microbial population but this flush in activity was short-lived. Immobilisation rate was always low and remained unaffected by the temperature regime, probably because the growth of the microbial biomass was inhibited at the higher temperatures. This imbalance between gross N mineralisation and immobilisation resulted in rapid increases in mineral N in soil. Two 6-h cycles of 50°C interspersed with 30°C were equally as effective as a single 48-h exposure at stimulating CO₂ production. Evidence of uncoupling CO₂ production and gross N mineralisation was observed in one study where soil was incubated at 50°C, but this response was not universal. The nitrification process was totally suppressed by exposure to temperature higher than 40°C, probably due to thermal denaturation of enzymes. The relevance of findings to field conditions is discussed.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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Format Inist (serveur)

NO :	PASCAL 09-0081619 INIST
ET :	Carbon and N turnover in moist sandy soil following short exposure to a range of high soil temperature regimes
AU :	LUXHØI (J.); FILLERY (I. R. P.); RECOUS (S.); JENSEN (L. S.)
AF :	Faculty of Life Sciences, The University of Copenhagen/1871 Frederiksberg/Danemark (1 aut., 4 aut.); INRA, UMR614 FARE/51000 Reims/France (1 aut., 3 aut.); CSIRO, Plant Industry, Private Bag 5, PO Wembley/WA 6913/Australie (2 aut., 3 aut.)
DT :	Publication en série; Niveau analytique
SO :	Australian journal of soil research; ISSN 0004-9573; Coden ASORAB; Australie; Da. 2008; Vol. 46; No. 8; Pp. 710-718; Bibl. 1 p.1/4
LA :	Anglais
EA :	Laboratory experiments were undertaken to examine the effects of high soil temperatures on N biotransformations in sandy soils. Soils were incubated at 30°, 40°, 50°, and 60°C for 2 days, before all treatments were kept at 30°C for up to 41 days. Another laboratory experiment evaluated the effect of different cycles of exposure to 50° and 30°C, including frequency and duration of exposure to 50°C, to assess the sensitivity of N biotransformations to temporary increases in temperature in the high range. CO₂-C production, soil microbial biomass-C, gross N mineralisation, gross N immobilisation, and potential gross nitrification were measured. Gross N mineralisation and CO₂-C production increased with temperature (in the range 30°-50°C) and exhibited a Q₁₀-relationship close to 2. Between 50° and 60°C, Q₁₀ was closer to 2.8. The increase in gross N mineralisation and CO₂-C production after exposure to 50° and 60°C is attributed to the decomposition of dead microbial biomass by the viable microbial population but this flush in activity was short-lived. Immobilisation rate was always low and remained unaffected by the temperature regime, probably because the growth of the microbial biomass was inhibited at the higher temperatures. This imbalance between gross N mineralisation and immobilisation resulted in rapid increases in mineral N in soil. Two 6-h cycles of 50°C interspersed with 30°C were equally as effective as a single 48-h exposure at stimulating CO₂ production. Evidence of uncoupling CO₂ production and gross N mineralisation was observed in one study where soil was incubated at 50°C, but this response was not universal. The nitrification process was totally suppressed by exposure to temperature higher than 40°C, probably due to thermal denaturation of enzymes. The relevance of findings to field conditions is discussed.
CC :	001E01P03; 002A32B03A2; 226C03
FD :	Carbone; Turnover; Humidité sol; Exposition; Haute température; Température sol; Régime thermique; Science terre; Science du sol; Sol sableux; Texture
FG :	Sol; Non métal; Elément groupe IVA; Propriété hydrique sol; Caractéristique sol; Propriété thermique; Condition thermique; Propriété physique; Environnement physique; Type de sol textural; Type de sol
ED :	carbon; Turnover; soil moisture; exhibits; high temperature; Soil temperature; thermal regime; Earth science; Soil science; sandy soils; textures
EG :	soils; Non metal; Group IVA element; Soil water properties; Property of soil; thermal properties; Thermal condition; physical properties; Physical environment
SD :	Carbono; Turnover; Humedad suelo; Alta temperatura; Temperatura suelo; Ciencia tierra; Ciencia del suelo; Textura
LO :	INIST-10723.354000184647770090
ID :	09-0081619

Links to Exploration step

Pascal:09-0081619

Le document en format XML

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<front><div type="abstract" xml:lang="en">Laboratory experiments were undertaken to examine the effects of high soil temperatures on N biotransformations in sandy soils. Soils were incubated at 30°, 40°, 50°, and 60°C for 2 days, before all treatments were kept at 30°C for up to 41 days. Another laboratory experiment evaluated the effect of different cycles of exposure to 50° and 30°C, including frequency and duration of exposure to 50°C, to assess the sensitivity of N biotransformations to temporary increases in temperature in the high range. CO<sub>2</sub>
-C production, soil microbial biomass-C, gross N mineralisation, gross N immobilisation, and potential gross nitrification were measured. Gross N mineralisation and CO<sub>2</sub>
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-relationship close to 2. Between 50° and 60°C, Q<sub>10</sub>
 was closer to 2.8. The increase in gross N mineralisation and CO<sub>2</sub>
-C production after exposure to 50° and 60°C is attributed to the decomposition of dead microbial biomass by the viable microbial population but this flush in activity was short-lived. Immobilisation rate was always low and remained unaffected by the temperature regime, probably because the growth of the microbial biomass was inhibited at the higher temperatures. This imbalance between gross N mineralisation and immobilisation resulted in rapid increases in mineral N in soil. Two 6-h cycles of 50°C interspersed with 30°C were equally as effective as a single 48-h exposure at stimulating CO<sub>2</sub>
 production. Evidence of uncoupling CO<sub>2</sub>
 production and gross N mineralisation was observed in one study where soil was incubated at 50°C, but this response was not universal. The nitrification process was totally suppressed by exposure to temperature higher than 40°C, probably due to thermal denaturation of enzymes. The relevance of findings to field conditions is discussed.</div>
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<fA61><s0>A</s0>
</fA61>
<fA64 i1="01" i2="1"><s0>Australian journal of soil research</s0>
</fA64>
<fA66 i1="01"><s0>AUS</s0>
</fA66>
<fC01 i1="01" l="ENG"><s0>Laboratory experiments were undertaken to examine the effects of high soil temperatures on N biotransformations in sandy soils. Soils were incubated at 30°, 40°, 50°, and 60°C for 2 days, before all treatments were kept at 30°C for up to 41 days. Another laboratory experiment evaluated the effect of different cycles of exposure to 50° and 30°C, including frequency and duration of exposure to 50°C, to assess the sensitivity of N biotransformations to temporary increases in temperature in the high range. CO<sub>2</sub>
-C production, soil microbial biomass-C, gross N mineralisation, gross N immobilisation, and potential gross nitrification were measured. Gross N mineralisation and CO<sub>2</sub>
-C production increased with temperature (in the range 30°-50°C) and exhibited a Q<sub>10</sub>
-relationship close to 2. Between 50° and 60°C, Q<sub>10</sub>
 was closer to 2.8. The increase in gross N mineralisation and CO<sub>2</sub>
-C production after exposure to 50° and 60°C is attributed to the decomposition of dead microbial biomass by the viable microbial population but this flush in activity was short-lived. Immobilisation rate was always low and remained unaffected by the temperature regime, probably because the growth of the microbial biomass was inhibited at the higher temperatures. This imbalance between gross N mineralisation and immobilisation resulted in rapid increases in mineral N in soil. Two 6-h cycles of 50°C interspersed with 30°C were equally as effective as a single 48-h exposure at stimulating CO<sub>2</sub>
 production. Evidence of uncoupling CO<sub>2</sub>
 production and gross N mineralisation was observed in one study where soil was incubated at 50°C, but this response was not universal. The nitrification process was totally suppressed by exposure to temperature higher than 40°C, probably due to thermal denaturation of enzymes. The relevance of findings to field conditions is discussed.</s0>
</fC01>
<fC02 i1="01" i2="2"><s0>001E01P03</s0>
</fC02>
<fC02 i1="02" i2="X"><s0>002A32B03A2</s0>
</fC02>
<fC02 i1="03" i2="2"><s0>226C03</s0>
</fC02>
<fC03 i1="01" i2="2" l="FRE"><s0>Carbone</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="2" l="ENG"><s0>carbon</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="2" l="SPA"><s0>Carbono</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Turnover</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG"><s0>Turnover</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Turnover</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="2" l="FRE"><s0>Humidité sol</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="2" l="ENG"><s0>soil moisture</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="2" l="SPA"><s0>Humedad suelo</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="2" l="FRE"><s0>Exposition</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="2" l="ENG"><s0>exhibits</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="2" l="FRE"><s0>Haute température</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="2" l="ENG"><s0>high temperature</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="2" l="SPA"><s0>Alta temperatura</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Température sol</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Soil temperature</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Temperatura suelo</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="2" l="FRE"><s0>Régime thermique</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="2" l="ENG"><s0>thermal regime</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Science terre</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Earth science</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Ciencia tierra</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Science du sol</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Soil science</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Ciencia del suelo</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="2" l="FRE"><s0>Sol sableux</s0>
<s2>NT</s2>
<s5>24</s5>
</fC03>
<fC03 i1="10" i2="2" l="ENG"><s0>sandy soils</s0>
<s2>NT</s2>
<s5>24</s5>
</fC03>
<fC03 i1="11" i2="2" l="FRE"><s0>Texture</s0>
<s5>28</s5>
</fC03>
<fC03 i1="11" i2="2" l="ENG"><s0>textures</s0>
<s5>28</s5>
</fC03>
<fC03 i1="11" i2="2" l="SPA"><s0>Textura</s0>
<s5>28</s5>
</fC03>
<fC07 i1="01" i2="2" l="FRE"><s0>Sol</s0>
<s2>NT</s2>
</fC07>
<fC07 i1="01" i2="2" l="ENG"><s0>soils</s0>
<s2>NT</s2>
</fC07>
<fC07 i1="01" i2="2" l="SPA"><s0>Suelo</s0>
<s2>NT</s2>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Non métal</s0>
<s2>NC</s2>
<s5>33</s5>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>Non metal</s0>
<s2>NC</s2>
<s5>33</s5>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>No metal</s0>
<s2>NC</s2>
<s5>33</s5>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Elément groupe IVA</s0>
<s2>NC</s2>
<s5>34</s5>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Group IVA element</s0>
<s2>NC</s2>
<s5>34</s5>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Elemento grupo IVA</s0>
<s2>NC</s2>
<s5>34</s5>
</fC07>
<fC07 i1="04" i2="X" l="FRE"><s0>Propriété hydrique sol</s0>
<s5>35</s5>
</fC07>
<fC07 i1="04" i2="X" l="ENG"><s0>Soil water properties</s0>
<s5>35</s5>
</fC07>
<fC07 i1="04" i2="X" l="SPA"><s0>Propiedad hídrica</s0>
<s5>35</s5>
</fC07>
<fC07 i1="05" i2="X" l="FRE"><s0>Caractéristique sol</s0>
<s5>36</s5>
</fC07>
<fC07 i1="05" i2="X" l="ENG"><s0>Property of soil</s0>
<s5>36</s5>
</fC07>
<fC07 i1="05" i2="X" l="SPA"><s0>Característica suelo</s0>
<s5>36</s5>
</fC07>
<fC07 i1="06" i2="2" l="FRE"><s0>Propriété thermique</s0>
<s5>37</s5>
</fC07>
<fC07 i1="06" i2="2" l="ENG"><s0>thermal properties</s0>
<s5>37</s5>
</fC07>
<fC07 i1="06" i2="2" l="SPA"><s0>Propiedad térmica</s0>
<s5>37</s5>
</fC07>
<fC07 i1="07" i2="X" l="FRE"><s0>Condition thermique</s0>
<s5>38</s5>
</fC07>
<fC07 i1="07" i2="X" l="ENG"><s0>Thermal condition</s0>
<s5>38</s5>
</fC07>
<fC07 i1="07" i2="X" l="SPA"><s0>Condición térmica</s0>
<s5>38</s5>
</fC07>
<fC07 i1="08" i2="2" l="FRE"><s0>Propriété physique</s0>
<s5>64</s5>
</fC07>
<fC07 i1="08" i2="2" l="ENG"><s0>physical properties</s0>
<s5>64</s5>
</fC07>
<fC07 i1="08" i2="2" l="SPA"><s0>Propiedad física</s0>
<s5>64</s5>
</fC07>
<fC07 i1="09" i2="X" l="FRE"><s0>Environnement physique</s0>
<s5>65</s5>
</fC07>
<fC07 i1="09" i2="X" l="ENG"><s0>Physical environment</s0>
<s5>65</s5>
</fC07>
<fC07 i1="09" i2="X" l="SPA"><s0>Medio ambiente físico</s0>
<s5>65</s5>
</fC07>
<fC07 i1="10" i2="2" l="FRE"><s0>Type de sol textural</s0>
<s4>INC</s4>
<s5>68</s5>
</fC07>
<fC07 i1="11" i2="2" l="FRE"><s0>Type de sol</s0>
<s4>INC</s4>
<s5>69</s5>
</fC07>
<fN21><s1>061</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
</standard>
<server><NO>PASCAL 09-0081619 INIST</NO>
<ET>Carbon and N turnover in moist sandy soil following short exposure to a range of high soil temperature regimes</ET>
<AU>LUXHØI (J.); FILLERY (I. R. P.); RECOUS (S.); JENSEN (L. S.)</AU>
<AF>Faculty of Life Sciences, The University of Copenhagen/1871 Frederiksberg/Danemark (1 aut., 4 aut.); INRA, UMR614 FARE/51000 Reims/France (1 aut., 3 aut.); CSIRO, Plant Industry, Private Bag 5, PO Wembley/WA 6913/Australie (2 aut., 3 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Australian journal of soil research; ISSN 0004-9573; Coden ASORAB; Australie; Da. 2008; Vol. 46; No. 8; Pp. 710-718; Bibl. 1 p.1/4</SO>
<LA>Anglais</LA>
<EA>Laboratory experiments were undertaken to examine the effects of high soil temperatures on N biotransformations in sandy soils. Soils were incubated at 30°, 40°, 50°, and 60°C for 2 days, before all treatments were kept at 30°C for up to 41 days. Another laboratory experiment evaluated the effect of different cycles of exposure to 50° and 30°C, including frequency and duration of exposure to 50°C, to assess the sensitivity of N biotransformations to temporary increases in temperature in the high range. CO<sub>2</sub>
-C production, soil microbial biomass-C, gross N mineralisation, gross N immobilisation, and potential gross nitrification were measured. Gross N mineralisation and CO<sub>2</sub>
-C production increased with temperature (in the range 30°-50°C) and exhibited a Q<sub>10</sub>
-relationship close to 2. Between 50° and 60°C, Q<sub>10</sub>
 was closer to 2.8. The increase in gross N mineralisation and CO<sub>2</sub>
-C production after exposure to 50° and 60°C is attributed to the decomposition of dead microbial biomass by the viable microbial population but this flush in activity was short-lived. Immobilisation rate was always low and remained unaffected by the temperature regime, probably because the growth of the microbial biomass was inhibited at the higher temperatures. This imbalance between gross N mineralisation and immobilisation resulted in rapid increases in mineral N in soil. Two 6-h cycles of 50°C interspersed with 30°C were equally as effective as a single 48-h exposure at stimulating CO<sub>2</sub>
 production. Evidence of uncoupling CO<sub>2</sub>
 production and gross N mineralisation was observed in one study where soil was incubated at 50°C, but this response was not universal. The nitrification process was totally suppressed by exposure to temperature higher than 40°C, probably due to thermal denaturation of enzymes. The relevance of findings to field conditions is discussed.</EA>
<CC>001E01P03; 002A32B03A2; 226C03</CC>
<FD>Carbone; Turnover; Humidité sol; Exposition; Haute température; Température sol; Régime thermique; Science terre; Science du sol; Sol sableux; Texture</FD>
<FG>Sol; Non métal; Elément groupe IVA; Propriété hydrique sol; Caractéristique sol; Propriété thermique; Condition thermique; Propriété physique; Environnement physique; Type de sol textural; Type de sol</FG>
<ED>carbon; Turnover; soil moisture; exhibits; high temperature; Soil temperature; thermal regime; Earth science; Soil science; sandy soils; textures</ED>
<EG>soils; Non metal; Group IVA element; Soil water properties; Property of soil; thermal properties; Thermal condition; physical properties; Physical environment</EG>
<SD>Carbono; Turnover; Humedad suelo; Alta temperatura; Temperatura suelo; Ciencia tierra; Ciencia del suelo; Textura</SD>
<LO>INIST-10723.354000184647770090</LO>
<ID>09-0081619</ID>
</server>
</inist>
</record>

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Carbon and N turnover in moist sandy soil following short exposure to a range of high soil temperature regimes

Carbon and N turnover in moist sandy soil following short exposure to a range of high soil temperature regimes

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