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Upscaling Gross Primary Production from Leaf to Canopy for Potato Crop (Solanum tuberosum L.)

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Año de publicación 2022
Idioma Inglés
Publicado por Climate (MDPI)

Descripción: Abstract: Estimating gross primary production (GPP) is important to understand the land–atmosphere CO2 exchange for major agroecosystems. Eddy covariance (EC) measurements provide accurate and reliable information about GPP, but flux measurements are often not available. Upscaling strategies gain importance as an alternative to the limitations of the use of the EC. Although the potato provides an important agroecosystem for worldwide carbon balance, there are currently no studies on potato GPP upscaling processes. This study reports two GPP scaling-up approaches from the detailed leaflevel characterization of gas exchange of potatoes. Multilayer and big leaf approaches were applied for extrapolating chamber and biometric measurements from leaf to canopy. Measurements of leaf area index and photosynthesis were performed from planting to the end of the canopy life cycle using an LP-80 ceptometer and an IRGA Li-Cor 6800, respectively. The results were compared to concurrent measurements of surface–atmosphere GPP from the EC measurements. Big-leaf models were able to simulate the general trend of GPP during the growth cycle, but they overestimated the GPP during the maximum LAI phase. Multilayer models correctly reproduced the behavior of potato GPP and closely predicted both: the daily magnitude and half-hourly variation in GPP when compared to EC measurements. Upscaling is a reliable alternative, but a good treatment of LAI and the photosynthetic light-response curves are decisive factors to achieve better GPP estimates. The results improved the knowledge of the biophysical control in the carbon fluxes of the potato crop.
Citación recomendada (normas APA)
: Fabio Ernesto; Castaño-Marín Martínez Maldonado, "Upscaling Gross Primary Production from Leaf to Canopy for Potato Crop (Solanum tuberosum L.)", Colombia:Climate (MDPI), 2022. Consultado en línea en la Biblioteca Digital de Bogotá (https://www.bibliotecadigitaldebogota.gov.co/resources/3711759/), el día 2025-08-05.

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Derechos de uso Derechos reservados
Fuente Biblioteca Virtual Banco de la República
Términos y condiciones de uso Más información aquí
Año de publicación 2022
Formato PDF
Cobertura Colombia

Upscaling Gross Primary Production from Leaf to Canopy for Potato Crop (Solanum tuberosum L.)

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