Consulta: creatorFacets:"Chevallier,Tiphaine"
Registros recuperados: 2
Data/hora: 13/06/2024 21:36:19

24-h variation in soil respiration after a long dry season in a Sudano-Sahelian region
Provedor de dados: 63
Autores: Yemadje,Pierrot Lionel; Guibert,Hervé; Blavet,Didier; Olina,Jean-Paul; Chevallier,Tiphaine; Deleporte,Philippe; Bernoux,Martial.
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...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diel soil respiration; Soil temperature; Soil moisture.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000500452

Texture and organic carbon contents do not impact amount of carbon protected in Malagasy soils
Provedor de dados: 63
Autores: Razafimbelo,Tantely; Chevallier,Tiphaine; Albrecht,Alain; Chapuis-Lardy,Lydie; Rakotondrasolo,Fela Nirina; Michellon,Roger; Rabeharisoa,Lilia; Bernoux,Martial.
Soil organic carbon (SOC) is usually said to be well correlated with soil texture and soil aggregation. These relations generally suggest a physical and physicochemical protection of SOC within soil aggregates and on soil fine particles, respectively. Because there are few experimental evidences of these relations on tropical soils, we tested the relations of soil variables (SOC and soil aggregate contents, and soil texture) with the amount of SOC physically protected in aggregates on a set of 15 Malagasy soils. The soil texture, the SOC and water stable macroaggregate (MA) contents and the amount of SOC physically protected inside aggregates, calculated as the difference of C mineralized by crushed and intact aggregates, were characterized. The relation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macroaggregate; Tropical soils; Soil structure; Carbon stabilization.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000300009