| Registro completo |
| Provedor de dados: |
Scientia Agricola
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| País: |
Brazil
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| Título: |
24-h variation in soil respiration after a long dry season in a Sudano-Sahelian region
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| Autores: |
Yemadje,Pierrot Lionel
Guibert,Hervé
Blavet,Didier
Olina,Jean-Paul
Chevallier,Tiphaine
Deleporte,Philippe
Bernoux,Martial
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| Data: |
2015-10-01
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| Ano: |
2015
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| Palavras-chave: |
Diel soil respiration
Soil temperature
Soil moisture
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| Resumo: |
Soil respiration is a major component of the global carbon cycle which links ecosystems and the atmosphere. To evaluate the reaction of soil respiration after wetting, during a dry period, soil respiration and associated environmental factors were measured over a 24-h period, during the dry season in North Cameroon after wetting the soil. Over 24-h, soil respiration rates followed a quadratic curve during the day coming close to linear at night, while soil temperature and moisture together explained at least 73 % of the variations during the 24-h observed. These soil respiration rates increased during the morning, peaked between 11h00 and 13h00 and then decreased gradually to the minimum around 06h00. These observations were used to propose a method for estimating mean daytime and nighttime soil respiration after wetting the soil. The method proposed in this study has the advantage of being based on a small number of measurements and is, therefore, easier to implement for monitoring 24-h soil respiration after the first rains following a long dry period.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000500452
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| Editor: |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
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| Relação: |
10.1590/0103-9016-2014-0412
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| Formato: |
text/html
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| Fonte: |
Scientia Agricola v.72 n.5 2015
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| Direitos: |
info:eu-repo/semantics/openAccess
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