%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture non répertoriées par l'AERES
%A Chevallier, Tiphaine
%A Blanchart, Eric
%A Girardin, C.
%A Mariotti, A.
%A Albrecht, Alain
%A Feller, Christian
%T The role of biological activity (roots, earthworms) in medium-term C dynamics in vertisol under a Digitaria decumbens (Gramineae) pasture
%D 2001
%L fdi:010023845
%G ENG
%J Applied Soil Ecology
%@ 0929-1393
%K VERTISOL ; LOMBRIC ; HERBACEE ; MATIERE ORGANIQUE ; CARBONE ORGANIQUE ; ISOTOPE ; BIOMASSE ; BIOLOGIE DU SOL ; RACINE ; ETUDE EXPERIMENTALE ; ETUDE COMPARATIVE
%K MARTINIQUE
%P 11-21
%R 10.1016/S0929-1393(00)00102-5
%U https://www.documentation.ird.fr/hor/fdi:010023845
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/b_fdi_57-58/010023845.pdf
%V 16
%W Horizon (IRD)
%X The natural abundance of 13C was used to estimate the turnover of the soil organic matter in vertisol re-grassed with #Digitaria decumbens$ (C4 plant) following intensive market gardening (C3 plants). In addition, the experimental design allowed us to determine the respective roles of roots and earthworms (#Polypheretima elongata$) in soil C stock restoration in #D. decumbens$ pasture. The C stock increased from 31 to 37 Mg C/ha in 5 years and the delta13C increased from -18.1% in market gardening soil to -15.5% in the 5-year-old pasture soil in the upper 20 cm. Below the 20 cm soil layer, the C stock and the delta13C did not change significantly in 5 years. The net gain of 6 Mg C/ha was the balance of a loss of 5 Mg C/ha derived from market gardening and a gain of 11 Mg C/ha derived #D. decumbens$. Effects of earthworms on the C dynamics were not dicernible. (Résumé d'auteur)
%$ 074FAUSOL02 ; 068PROSOL