期刊
COMPTES RENDUS GEOSCIENCE
卷 345, 期 7-8, 页码 266-271出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crte.2013.06.001
关键词
Central Africa; Semi-deciduous tropical forest; Savanna; C-14; Paleoenvironments
资金
- C3A project [ANR 09-PEXT-0]
- IRD
- CNRS
- Ngaoundere University
- National Herbarium of Yaounde
In order to better understand the dynamics of the forest-savanna mosaic from central Cameroon, we analyzed C-13 and C-14 profiles of six oxisols: two under forests and four under savannas. The delta C-13 soil profiles collected in the forests indicate that these environments are stable at least since the mid-Holocene, whereas the areas currently covered by savannas were formerly occupied by more forested vegetations. The C-14 dating of organic matter indicate that the late extension of the savannas in central Cameroon date from the Late Holocene, starting from 4000-3500 C-14 yr BP. (C) 2013 Published by Elsevier Masson SAS on behalf of Academie des sciences.
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