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1. Identificação
Tipo de ReferênciaArtigo em Evento (Conference Proceedings)
Sitemtc-m21c.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34R/3RGJ6FP
Repositóriosid.inpe.br/mtc-m21c/2018/07.24.13.29   (acesso restrito)
Última Atualização2019:04.01.12.32.09 (UTC) simone
Repositório de Metadadossid.inpe.br/mtc-m21c/2018/07.24.13.29.23
Última Atualização dos Metadados2019:04.01.12.32.10 (UTC) simone
Chave SecundáriaINPE--PRE/
Chave de CitaçãoMottusAABHMMNORS:2018:ImDiCh
TítuloImplications of diurnal changes in leaf pri on remote measurements of light use efficiency
Ano2018
Data de Acesso11 maio 2024
Tipo SecundárioPRE CI
Número de Arquivos1
Tamanho251 KiB
2. Contextualização
Autor 1 Mottus, Matti
 2 Aalto, Juho
 3 Aragão, Luiz Eduardo Oliveira e Cruz de
 4 Back, Jaana
 5 Hernández-Clemente, Rocío
 6 Maeda, Eduardo Eiji
 7 Markiet, Vincent
 8 Nichol, Caroline J.
 9 Oliveira Júnior, Raimundo Cosme
10 Restrepo, Coupe-Natalia
11 Saleska, Scott R.
Grupo 1
 2
 3 DIDSR-CGOBT-INPE-MCTIC-GOV-BR
Afiliação 1 VTT Technical Research Centre of Finland Ltd
 2 University of Helsinki
 3 Instituto Nacional de Pesquisas Espaciais (INPE)
 4 University of Helsinki
 5 University of Swansea
 6 University of Helsinki
 7 VTT Technical Research Centre of Finland Ltd
 8 University of Edinburgh
 9 Brazilian Agricultural Research Corporation
10 University of Arizona
11 University of Arizona
Endereço de e-Mail do Autor 1
 2
 3 luiz.aragao@inpe.br
Nome do EventoInternational Geoscience and Remote Sensing Symposium (IGARSS)
Localização do EventoValencia
Data23-27 jul.
Título do LivroProceedings
Histórico (UTC)2018-07-24 13:31:22 :: simone -> administrator :: 2018
2019-01-18 02:41:40 :: administrator -> simone :: 2018
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
Palavras-ChavePhotochemical Reflectance Index
Light Use Efficiency
Boreal forest
Amazon rainforest
Pinus sylvestris
Betula Pendula
Manilkara elata1
ResumoThe spectral properties of plant leaves reflect the state of their photosynthetic apparatus and the surrounding environment. A well-known mechanism of photosynthetic downregulation, active on the time scale from minutes to hours, is caused by reversible changes in the xanthophyll cycle pigments. These changes affect leaf spectral absorption and are frequently quantified using the Photochemical Reflectance Index (PRI). This index can thus be used to monitor the photosynthetic status of the vegetation canopy, potentially from a large distance, and allows for a global satellite-based monitoring of photosynthesis. Such Earth observation satellites in nearpolar orbits usually cover the same geographical location at the same local solar time at regular intervals. To facilitate the interpretation of these instantaneous remote PRI measurements and scale them to longer timescales, we measured the daily course of leaf PRI in two evergreen biomes: European boreal forest and Amazon rainforest. The daily course of PRI was different for the two locations. In Amazon, PRI was driven by incident Photosynthetic Photon Flux Density (PPFD). In the boreal location, PRI and PPFD were decoupled and PRI indicated downregulation only in the afternoon. This downregulation was confirmed with carbon exchange measurements. The study demonstrates the utility of biome-specific daily PRI curves for scaling instantaneous remote measurements to daily values and comparing data acquired at different times of day.
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5. Fontes relacionadas
Unidades Imediatamente Superiores8JMKD3MGPCW/3ER446E
Acervo Hospedeirourlib.net/www/2017/11.22.19.04
6. Notas
Campos Vaziosarchivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn label lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject targetfile tertiarymark tertiarytype type url volume
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