Per citar aquest document: https://ddd.uab.cat/record/166920
Scopus: 2 cites, Web of Science: 0 cites,
A remotely sensed pigment index reveals photosynthetic phenology in evergreen conifers
Gamon, John A. (University of Nebraska-Lincoln. Center for Advanced Land Management Information Technologies.)
Huemmrich, K. Fred (Goddard Space Flight Center)
Wong, Christopher Y.S. (University of Toronto. Department of Biology)
Ensminger, Ingo (University of Toronto. Department of Biology)
Garrity, Steven (Decagon Devices, Inc.)
Hollinger, David Y. (United States. Forest Service. Northern Research Station)
Noormets, Asko (North Carolina State University. Departament of Forestry and Environmental Resources)
Peñuelas, Josep. (Centre de Recerca Ecològica i Aplicacions Forestals)

Data: 2016
Resum: In evergreen conifers, where the foliage amount changes little with season, accurate detection of the underlying “photosynthetic phenology” from satellite remote sensing has been difficult, presenting challenges for global models of ecosystem carbon uptake. Here, we report a close correspondence between seasonally changing foliar pigment levels, expressed as chlorophyll/carotenoid ratios, and evergreen photosynthetic activity, leading to a “chlorophyll/carotenoid index” (CCI) that tracks evergreen photosynthesis at multiple spatial scales. When calculated from NASA’s Moderate Resolution Imaging Spectroradiometer satellite sensor, the CCI closely follows the seasonal patterns of daily gross primary productivity of evergreen conifer stands measured by eddy covariance. This discovery provides a way of monitoring evergreen photosynthetic activity from optical remote sensing, and indicates an important regulatory role for carotenoid pigments in evergreen photosynthesis. Improved methods of monitoring photosynthesis from space can improve our understanding of the global carbon budget in a warming world of changing vegetation phenology.
Nota: Número d'acord de subvenció EC/FP7/610028
Drets: Tots els drets reservats.
Llengua: Anglès
Document: article ; recerca ; acceptedVersion
Matèria: Carotenoid pigments ; Evergreen conifers ; Gross primary productivity (GPP) ; Chlorophyll:Carotenoid Index (CCI)
Publicat a: Proceedings of the National Academy of Sciences, Vol. 113, Issue 46 (November 2016) , p. 13087-13092, ISSN 0027-8424

DOI: 10.1073/pnas.1606162113
PMID: 27803333


Disponible a partir de: 30-11-2017
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El registre apareix a les col·leccions:
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
Articles > Articles de recerca
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 Registre creat el 2016-11-21, darrera modificació el 2016-12-19



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