Web of Science: 19 cites, Scopus: 18 cites, Google Scholar: cites,
Drought impacts on terrestrial primary production underestimated by satellite monitoring
Stocker, Benjamin (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Zscheischler, Jakob (Universität Bern. Centre for Climate Change Research)
Keenan, Trevor F. (University of California. Department of Environmental Science, Policy and Management)
Prentice, I. Colin (University College London. Department of Life Sciences)
Seneviratne, Sonia I. (Eidgenössische Technische Hochschule Zürich. Institut für Atmosphären-und Klimawissenschaft)
Peñuelas, Josep (Centre de Recerca Ecològica i Aplicacions Forestals)

Data: 2019
Resum: Satellite retrievals of information about the Earth's surface are widely used to monitor global terrestrial photosynthesis and primary production and to examine the ecological impacts of droughts. Methods for estimating photosynthesis from space commonly combine information on vegetation greenness, incoming radiation, temperature and atmospheric demand for water (vapour-pressure deficit), but do not account for the direct effects of low soil moisture. They instead rely on vapour-pressure deficit as a proxy for dryness, despite widespread evidence that soil moisture deficits have a direct impact on vegetation, independent of vapour-pressure deficit. Here, we use a globally distributed measurement network to assess the effect of soil moisture on photosynthesis, and identify a common bias in an ensemble of satellite-based estimates of photosynthesis that is governed by the magnitude of soil moisture effects on photosynthetic light-use efficiency. We develop methods to account for the influence of soil moisture and estimate that soil moisture effects reduce global annual photosynthesis by ~15%, increase interannual variability by more than 100% across 25% of the global vegetated land surface, and amplify the impacts of extreme events on primary production. These results demonstrate the importance of soil moisture effects for monitoring carbon-cycle variability and drought impacts on vegetation productivity from space.
Nota: Número d'acord de subvenció EC/H2020/701329
Nota: Número d'acord de subvenció EC/FP7/617518
Nota: Número d'acord de subvenció EC/FP7/610028
Nota: Número d'acord de subvenció MINECO/CGL2016-79835-P
Nota: Número d'acord de subvenció AGAUR/2017/SGR-1005
Drets: Tots els drets reservats
Llengua: Anglès.
Document: article ; recerca ; acceptedVersion
Matèria: Biogeochemistry ; Carbon cycle ; Ecology
Publicat a: Nature geoscience, Vol. 12, issue 4 (April 2019) , p. 264-270, ISSN 1752-0894

DOI: 10.1038/s41561-019-0318-6

38 p, 3.4 MB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
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 Registre creat el 2020-02-10, darrera modificació el 2020-03-13

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