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The boundless carbon cycle
The terrestrial biosphere is assumed to take up most of the carbon on land. However, it is becoming clear that inland waters process large amounts of organic carbon and must be considered in…
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Terrestrial Gross Carbon Dioxide Uptake: Global Distribution and Covariation with Climate
TLDR
Estimates of spatially distributed GPP and its covariation with climate can help improve coupled climate–carbon cycle process models.
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Reduction of forest soil respiration in response to nitrogen deposition
The use of fossil fuels and fertilizers has increased the amount of biologically reactive nitrogen in the atmosphere over the past century. As a consequence, forests in industrialized regions have…
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Old-growth forests as global carbon sinks
TLDR
The results demonstrate that old-growth forests can continue to accumulate carbon, contrary to the long-standing view that they are carbon neutral, and suggest that 15 per cent of the global forest area, which is currently not considered when offsetting increasing atmospheric carbon dioxide concentrations, provides at least 10 per cent the global net ecosystem productivity.
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Anthropogenic perturbation of the carbon fluxes from land to ocean
A substantial amount of the atmospheric carbon taken up on land through photosynthesis and chemical weathering is transported laterally along the aquatic continuum from upland terrestrial ecosystems…
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CO2 balance of boreal, temperate, and tropical forests derived from a global database
Terrestrial ecosystems sequester 2.1 Pg of atmospheric carbon annually. A large amount of the terrestrial sink is realized by forests. However, considerable uncertainties remain regarding the fate of…
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Influence of spring and autumn phenological transitions on forest ecosystem productivity
TLDR
Investigation of relationships between phenology and productivity in temperate and boreal forests finds the productivity of evergreen needleleaf forests is less sensitive to phenology than is productivity of deciduous broadleaf forests, which has implications for how climate change may drive shifts in competition within mixed-species stands.
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Net carbon dioxide losses of northern ecosystems in response to autumn warming
TLDR
Simulation and observations indicate that northern terrestrial ecosystems may currently lose carbon dioxide in response to autumn warming, with a sensitivity of about 0.2 PgC °C-1, offsetting 90% of the increased carbon dioxide uptake during spring.
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Importance of methane and nitrous oxide for Europe's terrestrial greenhouse-gas balance
Climate change negotiations aim to reduce net greenhouse-gas emissions by encouraging direct reductions of emissions and crediting countries for their terrestrial greenhouse-gas sinks. Ecosystem…
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Contrasting response of European forest and grassland energy exchange to heatwaves
Recent European heatwaves have raised interest in the impact of land cover conditions on temperature extremes. At present, it is believed that such extremes are enhanced by stronger surface heating…
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