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Increases in the flux of carbon belowground stimulate nitrogen uptake and sustain the long-term enhancement of forest productivity under elevated CO2

Drake, John E. ; Gallet-Budynek, Anne ; Hofmockel, Kirsten S. ; Bernhardt, Emily S. ; Billings, Sharon A. ; Jackson, Robert B. ; Johnsen, Kurt S. ; Lichter, John ; McCarthy, Heather R. ; McCormack, M. Luke ; Moore, David J. P. ; Oren, Ram ; Palmroth, Sari ; Phillips, Richard P. ; Pippen, Jeffrey S. ; Pritchard, Seth G. ; Treseder, Kathleen K. ; Schlesinger, William H. ; DeLucia, Evan H. ; Finzi, Adrien C.

Ecology letters, 2011-04, Vol.14 (4), p.349-357 [Periódico revisado por pares]

Oxford, UK: Blackwell Publishing Ltd

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Título:
Increases in the flux of carbon belowground stimulate nitrogen uptake and sustain the long-term enhancement of forest productivity under elevated CO2
Autor: Drake, John E. ; Gallet-Budynek, Anne ; Hofmockel, Kirsten S. ; Bernhardt, Emily S. ; Billings, Sharon A. ; Jackson, Robert B. ; Johnsen, Kurt S. ; Lichter, John ; McCarthy, Heather R. ; McCormack, M. Luke ; Moore, David J. P. ; Oren, Ram ; Palmroth, Sari ; Phillips, Richard P. ; Pippen, Jeffrey S. ; Pritchard, Seth G. ; Treseder, Kathleen K. ; Schlesinger, William H. ; DeLucia, Evan H. ; Finzi, Adrien C.
Assuntos: Animal and plant ecology ; Animal, plant and microbial ecology ; Biological and medical sciences ; Biomass ; Carbon dioxide ; Carbon sequestration ; coupled biogeochemical cycles ; coupled climate-carbon cycle models ; elevated CO2 ; forest productivity ; Forestry ; Forests ; Fundamental and applied biological sciences. Psychology ; General aspects ; General forest ecology ; Generalities. Production, biomass. Quality of wood and forest products. General forest ecology ; Nitrogen ; Plant growth
É parte de: Ecology letters, 2011-04, Vol.14 (4), p.349-357
Notas: ArticleID:ELE1593
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Descrição: Ecology Letters (2011) 14: 349–357 The earth’s future climate state is highly dependent upon changes in terrestrial C storage in response to rising concentrations of atmospheric CO2. Here we show that consistently enhanced rates of net primary production (NPP) are sustained by a C‐cascade through the root‐microbe‐soil system; increases in the flux of C belowground under elevated CO2 stimulated microbial activity, accelerated the rate of soil organic matter decomposition and stimulated tree uptake of N bound to this SOM. This process set into motion a positive feedback maintaining greater C gain under elevated CO2 as a result of increases in canopy N content and higher photosynthetic N‐use efficiency. The ecosystem‐level consequence of the enhanced requirement for N and the exchange of plant C for N belowground is the dominance of C storage in tree biomass but the preclusion of a large C sink in the soil.
Editor: Oxford, UK: Blackwell Publishing Ltd
Idioma: Inglês

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Increases in the flux of carbon belowground stimulate nitrogen uptake and sustain the long-term enhancement of forest productivity under elevated CO2

Oxford, UK: Blackwell Publishing Ltd

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