Publications des scientifiques de l'IRD

Chevallier Tiphaine, Blanchart Eric, Toucet Joële, Bernoux Martial. (2011). Methods to estimate the protection of soil organic carbon within macroaggregates, 1 : does soil water status affect the estimated amount of soil organic carbon protected inside macroaggregates ?. Communications in Soil Science and Plant Analysis, 42 (13), p. 1522-1536. ISSN 0010-3624.

Titre du document
Methods to estimate the protection of soil organic carbon within macroaggregates, 1 : does soil water status affect the estimated amount of soil organic carbon protected inside macroaggregates ?
Année de publication
2011
Type de document
Article référencé dans le Web of Science WOS:000299733900004
Auteurs
Chevallier Tiphaine, Blanchart Eric, Toucet Joële, Bernoux Martial
Source
Communications in Soil Science and Plant Analysis, 2011, 42 (13), p. 1522-1536 ISSN 0010-3624
The additional mineralized soil organic carbon (SOC) after soil crushing is considered to be the amount of SOC protected within aggregates (>200 mu m). This study investigated the effect of soil moisture in crushed and uncrushed soil samples on the calculated amounts of protected SOC in five tropical soils (Arenosol, two Ferralsols, Nitisol, and Vertisol). No differences in soil moisture optimum were observed between crushed and uncrushed soil samples, except in clayey soils with high SOC contents and high SOC mineralization rates (Nitisol and Vertisol). Crushing the soil increased soil respiration by 0.9 to 2.4 times. Soil moisture seemed to be a confounding factor in estimation of the SOC-protected amount only in soil with a high amount of protected SOC or with a low macroaggregate stability (Ferralsol and Vertisol). In these soils, the amount of protected SOC could be influenced by the method used to estimate it.
Plan de classement
Pédologie [068]
Localisation
Fonds IRD [F B010080692]
Identifiant IRD
PAR00008682
Contact