@article{PAR00008682, title = {{M}ethods 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 ?}, author = {{C}hevallier, {T}iphaine and {B}lanchart, {E}ric and {T}oucet, {J}o{\¨e}le and {B}ernoux, {M}artial}, editor = {}, language = {{ENG}}, abstract = {{T}he additional mineralized soil organic carbon ({SOC}) after soil crushing is considered to be the amount of {SOC} protected within aggregates (>200 mu m). {T}his study investigated the effect of soil moisture in crushed and uncrushed soil samples on the calculated amounts of protected {SOC} in five tropical soils ({A}renosol, two {F}erralsols, {N}itisol, and {V}ertisol). {N}o 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 ({N}itisol and {V}ertisol). {C}rushing the soil increased soil respiration by 0.9 to 2.4 times. {S}oil 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 ({F}erralsol and {V}ertisol). {I}n these soils, the amount of protected {SOC} could be influenced by the method used to estimate it.}, keywords = {{C}arbon ; mineralization ; soil water}, booktitle = {}, journal = {{C}ommunications in {S}oil {S}cience and {P}lant {A}nalysis}, volume = {42}, numero = {13}, pages = {1522--1536}, ISSN = {0010-3624}, year = {2011}, DOI = {10.1080/00103624.2011.581723}, URL = {https://www.documentation.ird.fr/hor/{PAR}00008682}, }