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Pàgina inicial > Articles > Articles publicats > The role of climate, foliar stoichiometry and plant diversity on ecosystem carbon balance |
Data: | 2020 |
Resum: | Global change is affecting terrestrial carbon (C) balances. The effect of climate on ecosystem C balance has been largely explored, but the roles of other concurrently changing factors, such as diversity and nutrient availability, remain elusive. We used eddy-covariance C-flux measurements from 62 ecosystems from which we compiled information on climate, ecosystem type, stand age, species abundance and foliar concentrations of N and P of the main species, to assess their importance in the ecosystem C balance. Climate and productivity were the main determinants of ecosystem C balance and its stability. In P-rich sites, increasing N was related to increased gross primary production and respiration and vice versa, but reduced net C uptake. Our analyses did not provide evidence for a strong relation between ecosystem diversity and their productivity and stability. Nonetheless, these results suggest that nutrient imbalances and, potentially, diversity loss may alter future global C balance. |
Ajuts: | Ministerio de Economía y Competitividad CGL2016-79835-P European Commission 610028 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1005 |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Elemental composition ; Ecosystem functioning ; Nitrogen ; Phosphorus ; Nutrients ; Biodiversity |
Publicat a: | Global change biology, vol.26 12 (October 2020) p. 7067-7078, ISSN 1365-2486 |
Postprint 29 p, 1.5 MB |