Are the soil microbial biomass and basal respiration governed by the climatic regime?
Identifieur interne : 001244 ( Istex/Corpus ); précédent : 001243; suivant : 001245Are the soil microbial biomass and basal respiration governed by the climatic regime?
Auteurs : H. InsamSource :
- Soil Biology and Biochemistry [ 0038-0717 ] ; 1990.
Abstract
Soils in C equilibrium from various climatic regions were sampled to assess the influence of macroclimate on soil microbial biomass (Cmic) and basal respiration (CO2-evolution). Cmic was measured using the substrate-induced respiration technique. Cmic (μg Cmic g−1 soil d.m.) was significantly correlated with several climatic variables, among them mean annual temperature (TEMP). At 20° and 5°C TEMP. 50 and 500 μg Cmic g−1 soil were found, respectively. When Cmic was calculated based on organic C (Cmic-to-Corg ratio), a very high correlation with precipitation/evaporation as the climatic variable was found. Of the variance 73% could be explained with the quadratic function y = 64.1− 109.5 x + 55.7 x2, where y = Cmic-to-Corg ratio (mg Cmic g−1 Corg) and x = precipitation/evaporation. Soils from arid climates exhibited a high Cmic-to-Corg ratio (up to 50 mg Cmic g−1 Corg). in soils from climates with balanced precipitation and evaporation (P/E = 1), the Cmic-to-Corg ratio was lowest (15mg Cmic g−1 Corg). As P/E exceeds this, the Cmic-to-Corg ratio increased. Any deviation of the Cmic-to-Corg ratio from this regression line would indicate that a certain soil is not in C equilibrium but is losing or accumulating organic matter. In this study, for soils from a wide climatic range, the effects of pH, N or clay content on Cmic and the Cmic-to-Corg ratio were small.For basal respiration, too, a significant relationship with climatic variables was found. Soils from warmer climates exhibited a basal respiration of 0.3 mg CO2 g−1 soil h−1 compared to 0.1 mg for cooler climates. The metabolic quotient qCO2 (μg respiratory CO2-C g−1 Cmic h−1) increased with temperature.
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DOI: 10.1016/0038-0717(90)90189-7
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Insam</name><affiliation><mods:affiliation>Kananaskis Centre for Environmental Research, The University of Calgary, Calgary, Alberta, Canada T2N 1N4</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:D08853EB0AF3CB570482C7FB47EED43534F58283</idno><date when="1990" year="1990">1990</date><idno type="doi">10.1016/0038-0717(90)90189-7</idno><idno type="url">https://api-v5.istex.fr/document/D08853EB0AF3CB570482C7FB47EED43534F58283/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001244</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001244</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">Are the soil microbial biomass and basal respiration governed by the climatic regime?</title><author><name sortKey="Insam, H" sort="Insam, H" uniqKey="Insam H" first="H." last="Insam">H. Insam</name><affiliation><mods:affiliation>Kananaskis Centre for Environmental Research, The University of Calgary, Calgary, Alberta, Canada T2N 1N4</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Soil Biology and Biochemistry</title><title level="j" type="abbrev">SBB</title><idno type="ISSN">0038-0717</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1990">1990</date><biblScope unit="volume">22</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="525">525</biblScope><biblScope unit="page" to="532">532</biblScope></imprint><idno type="ISSN">0038-0717</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0038-0717</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Soils in C equilibrium from various climatic regions were sampled to assess the influence of macroclimate on soil microbial biomass (Cmic) and basal respiration (CO2-evolution). Cmic was measured using the substrate-induced respiration technique. Cmic (μg Cmic g−1 soil d.m.) was significantly correlated with several climatic variables, among them mean annual temperature (TEMP). At 20° and 5°C TEMP. 50 and 500 μg Cmic g−1 soil were found, respectively. When Cmic was calculated based on organic C (Cmic-to-Corg ratio), a very high correlation with precipitation/evaporation as the climatic variable was found. Of the variance 73% could be explained with the quadratic function y = 64.1− 109.5 x + 55.7 x2, where y = Cmic-to-Corg ratio (mg Cmic g−1 Corg) and x = precipitation/evaporation. Soils from arid climates exhibited a high Cmic-to-Corg ratio (up to 50 mg Cmic g−1 Corg). in soils from climates with balanced precipitation and evaporation (P/E = 1), the Cmic-to-Corg ratio was lowest (15mg Cmic g−1 Corg). As P/E exceeds this, the Cmic-to-Corg ratio increased. Any deviation of the Cmic-to-Corg ratio from this regression line would indicate that a certain soil is not in C equilibrium but is losing or accumulating organic matter. In this study, for soils from a wide climatic range, the effects of pH, N or clay content on Cmic and the Cmic-to-Corg ratio were small.For basal respiration, too, a significant relationship with climatic variables was found. Soils from warmer climates exhibited a basal respiration of 0.3 mg CO2 g−1 soil h−1 compared to 0.1 mg for cooler climates. The metabolic quotient qCO2 (μg respiratory CO2-C g−1 Cmic h−1) increased with temperature.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>H. Insam</name><affiliations><json:string>Kananaskis Centre for Environmental Research, The University of Calgary, Calgary, Alberta, Canada T2N 1N4</json:string></affiliations></json:item></author><language><json:string>eng</json:string></language><originalGenre><json:string>Full-length article</json:string></originalGenre><abstract>Soils in C equilibrium from various climatic regions were sampled to assess the influence of macroclimate on soil microbial biomass (Cmic) and basal respiration (CO2-evolution). Cmic was measured using the substrate-induced respiration technique. Cmic (μg Cmic g−1 soil d.m.) was significantly correlated with several climatic variables, among them mean annual temperature (TEMP). At 20° and 5°C TEMP. 50 and 500 μg Cmic g−1 soil were found, respectively. When Cmic was calculated based on organic C (Cmic-to-Corg ratio), a very high correlation with precipitation/evaporation as the climatic variable was found. Of the variance 73% could be explained with the quadratic function y = 64.1− 109.5 x + 55.7 x2, where y = Cmic-to-Corg ratio (mg Cmic g−1 Corg) and x = precipitation/evaporation. Soils from arid climates exhibited a high Cmic-to-Corg ratio (up to 50 mg Cmic g−1 Corg). in soils from climates with balanced precipitation and evaporation (P/E = 1), the Cmic-to-Corg ratio was lowest (15mg Cmic g−1 Corg). As P/E exceeds this, the Cmic-to-Corg ratio increased. Any deviation of the Cmic-to-Corg ratio from this regression line would indicate that a certain soil is not in C equilibrium but is losing or accumulating organic matter. In this study, for soils from a wide climatic range, the effects of pH, N or clay content on Cmic and the Cmic-to-Corg ratio were small.For basal respiration, too, a significant relationship with climatic variables was found. Soils from warmer climates exhibited a basal respiration of 0.3 mg CO2 g−1 soil h−1 compared to 0.1 mg for cooler climates. 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Cmic was measured using the substrate-induced respiration technique. Cmic (μg Cmic g−1 soil d.m.) was significantly correlated with several climatic variables, among them mean annual temperature (TEMP). At 20° and 5°C TEMP. 50 and 500 μg Cmic g−1 soil were found, respectively. When Cmic was calculated based on organic C (Cmic-to-Corg ratio), a very high correlation with precipitation/evaporation as the climatic variable was found. Of the variance 73% could be explained with the quadratic function y = 64.1− 109.5 x + 55.7 x2, where y = Cmic-to-Corg ratio (mg Cmic g−1 Corg) and x = precipitation/evaporation. Soils from arid climates exhibited a high Cmic-to-Corg ratio (up to 50 mg Cmic g−1 Corg). in soils from climates with balanced precipitation and evaporation (P/E = 1), the Cmic-to-Corg ratio was lowest (15mg Cmic g−1 Corg). As P/E exceeds this, the Cmic-to-Corg ratio increased. Any deviation of the Cmic-to-Corg ratio from this regression line would indicate that a certain soil is not in C equilibrium but is losing or accumulating organic matter. In this study, for soils from a wide climatic range, the effects of pH, N or clay content on Cmic and the Cmic-to-Corg ratio were small.For basal respiration, too, a significant relationship with climatic variables was found. Soils from warmer climates exhibited a basal respiration of 0.3 mg CO2 g−1 soil h−1 compared to 0.1 mg for cooler climates. The metabolic quotient qCO2 (μg respiratory CO2-C g−1 Cmic h−1) increased with temperature.</p></abstract></profileDesc><revisionDesc><change when="1990">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api-v5.istex.fr/document/D08853EB0AF3CB570482C7FB47EED43534F58283/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>SBB</jid><aid>90901897</aid><ce:pii>0038-0717(90)90189-7</ce:pii><ce:doi>10.1016/0038-0717(90)90189-7</ce:doi><ce:copyright type="unknown" year="1990"></ce:copyright></item-info><head><ce:title>Are the soil microbial biomass and basal respiration governed by the climatic regime?</ce:title><ce:author-group><ce:author><ce:given-name>H.</ce:given-name><ce:surname>Insam</ce:surname><ce:cross-ref refid="FN1"><ce:sup>∗</ce:sup></ce:cross-ref></ce:author><ce:affiliation><ce:textfn>Kananaskis Centre for Environmental Research, The University of Calgary, Calgary, Alberta, Canada T2N 1N4</ce:textfn></ce:affiliation><ce:footnote id="FN1"><ce:label>∗</ce:label><ce:note-para>Present address: Institut für Bodenbiologie, Bundesforschungsanstalt für Landwirtschaft, Bundesallee 50, 3300 Braunschweig, B.R.D.</ce:note-para></ce:footnote></ce:author-group><ce:date-accepted day="15" month="10" year="1989"></ce:date-accepted><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>Soils in C equilibrium from various climatic regions were sampled to assess the influence of macroclimate on soil microbial biomass (C<ce:inf>mic</ce:inf>) and basal respiration (CO<ce:inf>2</ce:inf>-evolution). C<ce:inf>mic</ce:inf> was measured using the substrate-induced respiration technique. C<ce:inf>mic</ce:inf> (μg C<ce:inf>mic</ce:inf> g<ce:sup>−1</ce:sup> soil d.m.) was significantly correlated with several climatic variables, among them mean annual temperature (TEMP). At 20° and 5°C TEMP. 50 and 500 μg C<ce:inf>mic</ce:inf> g<ce:sup>−1</ce:sup> soil were found, respectively. When C<ce:inf>mic</ce:inf> was calculated based on organic C (C<ce:inf>mic</ce:inf>-to-C<ce:inf>org</ce:inf> ratio), a very high correlation with precipitation/evaporation as the climatic variable was found. Of the variance 73% could be explained with the quadratic function <ce:italic>y</ce:italic> = 64.1− 109.5 <ce:italic>x</ce:italic> + 55.7 <ce:italic>x</ce:italic><ce:sup>2</ce:sup>, where <ce:italic>y</ce:italic> = C<ce:inf>mic</ce:inf>-to-C<ce:inf>org</ce:inf> ratio (mg C<ce:inf>mic</ce:inf> g<ce:sup>−1</ce:sup> C<ce:inf>org</ce:inf>) and <ce:italic>x</ce:italic> = precipitation/evaporation. Soils from arid climates exhibited a high C<ce:inf>mic</ce:inf>-to-C<ce:inf>org</ce:inf> ratio (up to 50 mg C<ce:inf>mic</ce:inf> g<ce:sup>−1</ce:sup> C<ce:inf>org</ce:inf>). in soils from climates with balanced precipitation and evaporation (P/E = 1), the C<ce:inf>mic</ce:inf>-to-C<ce:inf>org</ce:inf> ratio was lowest (15mg C<ce:inf>mic</ce:inf> g<ce:sup>−1</ce:sup> C<ce:inf>org</ce:inf>). As P/E exceeds this, the C<ce:inf>mic</ce:inf>-to-C<ce:inf>org</ce:inf> ratio increased. Any deviation of the C<ce:inf>mic</ce:inf>-to-C<ce:inf>org</ce:inf> ratio from this regression line would indicate that a certain soil is not in C equilibrium but is losing or accumulating organic matter. In this study, for soils from a wide climatic range, the effects of pH, N or clay content on C<ce:inf>mic</ce:inf> and the C<ce:inf>mic</ce:inf>-to-C<ce:inf>org</ce:inf> ratio were small.</ce:simple-para><ce:simple-para>For basal respiration, too, a significant relationship with climatic variables was found. Soils from warmer climates exhibited a basal respiration of 0.3 mg CO<ce:inf>2</ce:inf> g<ce:sup>−1</ce:sup> soil h<ce:sup>−1</ce:sup> compared to 0.1 mg for cooler climates. The metabolic quotient qCO<ce:inf>2</ce:inf> (μg respiratory CO<ce:inf>2</ce:inf>-C g<ce:sup>−1</ce:sup> C<ce:inf>mic</ce:inf> h<ce:sup>−1</ce:sup>) increased with temperature.</ce:simple-para></ce:abstract-sec></ce:abstract></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Are the soil microbial biomass and basal respiration governed by the climatic regime?</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Are the soil microbial biomass and basal respiration governed by the climatic regime?</title></titleInfo><name type="personal"><namePart type="given">H.</namePart><namePart type="family">Insam</namePart><affiliation>Kananaskis Centre for Environmental Research, The University of Calgary, Calgary, Alberta, Canada T2N 1N4</affiliation><description>Present address: Institut für Bodenbiologie, Bundesforschungsanstalt für Landwirtschaft, Bundesallee 50, 3300 Braunschweig, B.R.D.</description><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1990</dateIssued><copyrightDate encoding="w3cdtf">1990</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">Soils in C equilibrium from various climatic regions were sampled to assess the influence of macroclimate on soil microbial biomass (Cmic) and basal respiration (CO2-evolution). Cmic was measured using the substrate-induced respiration technique. Cmic (μg Cmic g−1 soil d.m.) was significantly correlated with several climatic variables, among them mean annual temperature (TEMP). At 20° and 5°C TEMP. 50 and 500 μg Cmic g−1 soil were found, respectively. When Cmic was calculated based on organic C (Cmic-to-Corg ratio), a very high correlation with precipitation/evaporation as the climatic variable was found. Of the variance 73% could be explained with the quadratic function y = 64.1− 109.5 x + 55.7 x2, where y = Cmic-to-Corg ratio (mg Cmic g−1 Corg) and x = precipitation/evaporation. Soils from arid climates exhibited a high Cmic-to-Corg ratio (up to 50 mg Cmic g−1 Corg). in soils from climates with balanced precipitation and evaporation (P/E = 1), the Cmic-to-Corg ratio was lowest (15mg Cmic g−1 Corg). As P/E exceeds this, the Cmic-to-Corg ratio increased. Any deviation of the Cmic-to-Corg ratio from this regression line would indicate that a certain soil is not in C equilibrium but is losing or accumulating organic matter. In this study, for soils from a wide climatic range, the effects of pH, N or clay content on Cmic and the Cmic-to-Corg ratio were small.For basal respiration, too, a significant relationship with climatic variables was found. Soils from warmer climates exhibited a basal respiration of 0.3 mg CO2 g−1 soil h−1 compared to 0.1 mg for cooler climates. The metabolic quotient qCO2 (μg respiratory CO2-C g−1 Cmic h−1) increased with temperature.</abstract><relatedItem type="host"><titleInfo><title>Soil Biology and Biochemistry</title></titleInfo><titleInfo type="abbreviated"><title>SBB</title></titleInfo><genre type="journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">1990</dateIssued></originInfo><identifier type="ISSN">0038-0717</identifier><identifier type="PII">S0038-0717(00)X0262-3</identifier><part><date>1990</date><detail type="volume"><number>22</number><caption>vol.</caption></detail><detail type="issue"><number>4</number><caption>no.</caption></detail><extent unit="issue pages"><start>433</start><end>577</end></extent><extent unit="pages"><start>525</start><end>532</end></extent></part></relatedItem><identifier type="istex">D08853EB0AF3CB570482C7FB47EED43534F58283</identifier><identifier type="DOI">10.1016/0038-0717(90)90189-7</identifier><identifier type="PII">0038-0717(90)90189-7</identifier><recordInfo><recordContentSource>ELSEVIER</recordContentSource></recordInfo></mods></metadata></istex></record>Pour manipuler ce document sous Unix (Dilib)
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