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Agricultural lands occupy 37% of the earth's land surface. Agriculture accounts for 52 and 84% of global anthropogenic methane and nitrous oxide emissions. Agricultural soils may also act as a sink or source for CO2, but the net flux is small. Many agricultural practices can potentially mitigate greenhouse gas (GHG) emissions, the most prominent of which(More)
The terrestrial biosphere is a key component of the global carbon cycle and its carbon balance is strongly influenced by climate. Continuing environmental changes are thought to increase global terrestrial carbon uptake. But evidence is mounting that climate extremes such as droughts or storms can lead to a decrease in regional ecosystem carbon stocks and(More)
Extreme droughts, heat waves, frosts, precipitation, wind storms and other climate extremes may impact the structure, composition and functioning of terrestrial ecosystems, and thus carbon cycling and its feedbacks to the climate system. Yet, the interconnected avenues through which climate extremes drive ecological and physiological processes and alter the(More)
The most widely applied soil carbon models partition the soil organic carbon into two or more kinetically defined conceptual pools. The initial distribution of soil organic matter between these pools influences the simulations. Like many other soil organic carbon models, the DAYCENT model is initialised by assuming equilibrium at the beginning of the(More)
Biogeosciences Discussions This discussion paper is/has been under review for the journal Biogeosciences (BG). Please refer to the corresponding final paper in BG if available. Abstract Globally, terrestrial ecosystems have absorbed about 30 % of anthropogenic emissions over the period 2000–2007 and inter-hemispheric gradients indicate that a significant(More)
Remerciements Si j'ai réussi à soutenir ma thèse en deux ans et demi, c'est en partie grâce à toi, Benoît, car tu as su me motiver pour croire à ce petit challenge. Je te remercie pour ta confiance, ta disponibilité, tes conseils et ton énergie positive. C'est un véritable plaisir de travailler avec toi et j'espère que nous pourrons continuer à collaborer(More)
The overall objective of the project is the analysis of likely impacts of global change (CO 2 increase, N deposition, climate change and relevant socioeconomic trends) on forests in Europe. Changes in growth and productivity of forest species may influence the competitive relationships among the species, the species composition of unmanaged forests, and the(More)
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