Le gestionnaire forestier doit prévoir à long terme et organiser à court terme, à cet effet il doit avoir une connaissance aussi précise que possible des potentialités des massifs forestiers. La répartition des zones boisées et des peuplements en classes de productivité joue un rôle déterminant dans le choix des essences à favoriser ou à introduire...
Douglas-fir is presently one of the dominant species used in France for afforestation. It was widely introduced without knowing exactly its effects on soils and superficial waters. The aim of this research was to obtain quantitative data on the biogeochemical functioning of a Douglas-fir ecosystem, and to provide relevant information to forest mana...
Contexte – Les recherches examinées portent sur la dynamique des forêts tempérées, plus particulièrement sur la productivité forestière et sa modélisation, à partir d’observations quantitatives opérées à des échelles spatiotemporelles régionale à nationale et pluri-décennale à centennale, et à des niveaux d’organisation définis par l’espèce ligneus...
Rising atmospheric CO2 stimulates photosynthesis and productivity of forests, offsetting CO2 emissions1, 2. Elevated CO2 experiments in temperate planted forests yielded ~23% increases in productivity3 over the initial years. Whether similar CO2 stimulation occurs in mature evergreen broadleaved forests on low-phosphorus (P) soils is unknown, large...
Recent studies projecting future climate change impacts on forests mainly consider either the effects of climate change on productivity or on disturbances. However, productivity and disturbances are intrinsically linked because 1) disturbances directly affect forest productivity (e.g. via a reduction in leaf area, growing stock or resource-use effi...
Key message : In tree communities, tree size inequality reduces productivity and interacts with tree shade tolerance to modulate stand productivity, with a higher productivity in stands where shade-intolerant species dominate shade-tolerant species in size.[br/] Context Positive diversity–productivity relationships have been reported in different p...
Precise descriptions of forest productivity, biomass, and structure are essential for understanding ecosystem responses to climatic and anthropogenic changes. However, relations between these components are complex, in particular for tropical forests.[br/] We developed an approach to simulate carbon dynamics in the Amazon rainforest including aroun...
Climate change affects ecosystem functioning directly through impacts on plant physiology, resulting in changes of global productivity. However, climate change has also an indirect impact on ecosystems, through changes in the composition and diversity of plant communities. The relative importance of these direct and indirect effects has not been ev...
Precise descriptions of forest productivity, biomass, and structure are essential for understanding ecosystem responses to climatic and anthropogenic changes. However, relations between these components are complex, in particular for tropical forests.We developed an approach to simulate carbon dynamics in the Amazon rainforest including around 410 ...
