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Introduction
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July 2015 - November 2018
January 2012 - December 2014
Publications
Publications (30)
Coordinated by Cirad in partnership with INRAE and IRD, the "4 for 1000" study in overseas France provides an unprecedented assessment of soil carbon stocks in overseas territories. The authors formulate operational and research recommendations to preserve these high stocks and respond to the major challenges facing agriculture in the face of clima...
Coordonnée par le Cirad en partenariat avec INRAE et l’IRD, l’étude « 4 pour 1000 » Outre-mer dresse un bilan inédit des stocks de carbone du sol des territoires ultramarins. Les auteurs formulent des recommandations opérationnelles et de recherche pour préserver ces stocks élevés et répondre aux grands enjeux actuels de l’agriculture face au chang...
Identifying the drivers of soil organic carbon (SOC) stock changes is of the utmost importance to contribute to global challenges like climate change, land degradation, biodiversity loss, or food security. Evaluating the impacts of land use and management practices in agriculture and forestry on SOC is still challenging. Merging datasets or making...
Pre-print open for comments until July 4, here : https://egusphere.copernicus.org/preprints/2022/egusphere-2022-115/
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Abstract :
Identifying the drivers of soil organic carbon (SOC) stock changes is of utmost importance to contribute to global challenges like climate change, land degradation, biodiversity loss or food...
DATA4C+ is a thesaurus classifying and defining land management practices in agriculture and forestry for soil carbon storage. DATA4C+ thesaurus is focussed on land management practices identified in the scientific literature as drivers of soil organic carbon (SOC) changes. DATA4C+ thesaurus aim was to fill the gap of lack of a comprehensive thesau...
Because of its multiple co-benefits, soil organic carbon is at the crossroads of several Sustainable Development Goals, but also of the United Nations Conventions on Climate, Biodiversity and Desertification. Launched during COP 25 in Paris, the 4 for 1000 Initiative is one of the major initiatives of this international agenda that involves multi-s...
Soil organic carbon (SOC) constitutes the largest terrestrial C stock, particularly in the Andosols of volcanic areas. Quantitative information on distribution of SOC stocks is needed to construct a baseline for studying temporal changes in SOC. The spatial variation of soil short-range-order minerals such as allophane usually explains the variabil...
Preprint in Soil Discussion:
Soil organic carbon (SOC) constitutes the largest terrestrial C stock, especially in the Andosols of volcanic areas. In Costa Rica, in a 1 km2 basin covered by coffee agroforestry, SOC stocks were measured by MIR spectrometry from surface down to 200-cm depth to 24 to 72 kgC m-2. Andic soil properties explained this hig...
The agricultural landscape of French Guiana (Amazonia) is expected to undergo substantial change as a result of rapid population growth in the region. Such changes in the landscape will lead to the conversion of tropical forests into land destined for agricultural use. Little information is available on the effect of different agricultural systems...
Organic carbon saturation in soils refers to the theoretical maximum soil organic carbon (SOC) that can be associated with and stabilized on fine silt plus clay particles (F < 20 μm). We reviewed the literature dealing with SOC distribution between soil fractions to evaluate carbon saturation for tropical soils and estimate the C storage potential...
L'application de la connaissance des services écosystémiques rendus par les sols passe par leur meilleure connaissance dans des contextes divers. La Guyane cherche à allier un développement local à un maintien des services environnementaux rendus par les écosystèmes. La déforestation, lorsque pratiquée hors de cahiers de charges bien établis, condu...
Discharge of wastewater leading to notable soil surface contamination is widely reported. But few works highlight the fast dynamics of soils and their morphological transformations that may result from such anthropogenic activities. Near Paris (France), sandy Luvisols were irrigated with urban wastewater since the 1890s. Within and outside the disc...
Fire-free forest conversion with organic inputs as an alternative to slash-and-burn could improve agroecosystem sustainability. In a diachronic experiment in French Guiana (Amazonia), we assessed changes in greenhouse gases fluxes at the soil-atmosphere interface as well as nitrogen and carbon fluxes in soil percolation water during 4 years.
Large inputs of woody debris to soil can improve the soil. We examined the fate of woody debris buried in soil after fire‐free forest conversion to cropland in F rench G uiana. We measured the mass loss of woody debris > 4 mm on five sampling dates for 4 years after deforestation. Composition of the organic matter of woody debris was analysed with...
The impact of deforestation on soil organic carbon (SOC) stocks is important in the context of climate change and agricultural soil use. Trends of SOC stock changes after agroecosystem establishment vary according to the spatial scale considered, and factors explaining these trends may differ sometimes according to meta-analyses. We have reviewed t...
Woody inputs in agroecosystems can enhance physiso-chemical properties of soil, however decomposition kinetics of these fresh inputs have been rarely studied in tropical humid regions. In Amazonia, this practice occurs for fire-free forest clearing, and could contribute to carbon storage in soil. In this study we aimed to assess the fate of woody d...
Fire-free forest conversion with organic inputs as an alternative to slash-and-burn could improve agro-ecosystem sustainability. We assessed soil carbon mass changes in a sandy-clayey and well-drained soil in French Guiana after forest clearing by the chop-and-mulch method and crop establishment. At the experimental site of Combi, native forest was...
Des structures cryogéniques organisées en réseaux polygonaux de 20 à 30 m ont été mises en évidence dans les sols de la plaine de Pierrelaye-Bessancourt. La présence de ces structures cryogéniques millénaires interroge sur les conditions hydrologiques locales qu’elles engendrent et le rôle de celles-ci sur le transfert des polluants accumulés dans...
