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RESEARCH PRODUCT

Factors influencing carbon decomposition of topsoils from the Brazilian Amazon Basin

Th. ChonéCarlos Clemente CerriLydie-stella KoutikaG. BurtinFrancis Andreux

subject

chemistry.chemical_classificationTopsoil[SDV]Life Sciences [q-bio]Soil biologySoil ScienceSoil scienceRainforestMicrobiologyTexture (geology)Soil qualityCarbon cyclechemistry[SDE]Environmental SciencesEnvironmental scienceOrganic matterPrecipitationAgronomy and Crop Science

description

The influence of texture and local climate, especially precipitation, on C decomposition was evaluated in topsoils under forest and pastures at different sites located in the western, central, and eastern Brazilian Amazon Basin. Independent of the geographical location and vegetation cover, C decomposition was lower in topsoils of fine texture with a sand/clay ratio of less than 1, compared to topsoils of coarse a texture with a sand/clay ratio ranging from 2 to 8. In the former, the low sand/clay ratio appears to reduce C decomposition. In the latter, besides the effect of the high sand/clay ratio, the local climate, especially the annual precipitation, seems to play an important role in controlling C decomposition.

yearjournalcountryeditionlanguage
1999-02-08Biology and Fertility of Soils
https://doi.org/10.1007/s003740050517