Energy, water vapor and carbon fluxes in Andean agroecosystems: conceptualization and methodological standardization

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dc.creatorAngela María Castano Marín
dc.creatorNestor Miguel Riñao Herrera
dc.creatorAndrés Javier Peña Quiñones
dc.creatorVíctor Hugo Ramirez Builes
dc.creatorArley Valencia Salazar
dc.creatorApolinar Figueroa Casas
dc.creatorGerardo Antonio Góez Vinasco
dc.date2017
dc.date.accessioned2026-07-07T02:34:42Z
dc.descriptionThis paper presents the conceptualization, methodological adjustment and experimental application of the micrometeorological technique eddy covariance - EC, to measure energy, water vapor and CO 2 fluxes in two coffee agroecosystems: the first under full sunlight, and the second under shade, both with equatorial Andean hillslope conditions. With a footprint and fetch calculation, the required distance from the edge of the field in the prevailing wind direction to the EC tower is three times higher under shade than full sun. The shaded agroecosystem reached maximum average carbon fixation rates of 21.26 ± 2.469 molCO 2 .m -2 s -1 ( α = 0.05) (61% higher than under 100% sunlight) which gives a high carbon sink capacity to the association of coffee plants with shading Pigeon peas ( Cajanus cajan L). The average evapotranspiration rate was 2.33 ± 0.0102 mm.d -1 ( α = 0.05) and 2.08 ± 0.00732 mm.d -1 under shade and 100% sunlight, respectively. The proportion of net radiation that reached the soil was 2% under shade and 4% under 100% sunlight. Likewise, the soil energy loss during the night was lower under shade, indicating less day-night temperature range in the latter agroecosystem. The methodological adjustment and the results of this first work using EC in Colombian coffee plantations, contribute to the development of reliable research regarding gas and energy exchanges between the atmosphere and ecosystems in conditions of the equatorial Andean hillslope.
dc.formatapplication/pdf
dc.identifier0120-2812
dc.identifierhttps://www.redalyc.org/articulo.oa?id=169949139005
dc.identifierhttps://www.redalyc.org/journal/1699/169949139005/
dc.identifierhttps://www.redalyc.org/journal/1699/169949139005/html/
dc.identifierhttps://www.redalyc.org/journal/1699/169949139005/169949139005.epub
dc.identifierhttps://www.redalyc.org/journal/1699/169949139005/movil
dc.identifier.urihttp://hdl.handle.net/123456789/420000
dc.languageen
dc.publisherUniversidad Nacional de Colombia
dc.relationhttp://www.redalyc.org/revista.oa?id=1699
dc.rightsActa Agronómica
dc.sourceActa Agronómica (Colombia) Num.1 Vol.66
dc.subjectAgrociencias
dc.titleEnergy, water vapor and carbon fluxes in Andean agroecosystems: conceptualization and methodological standardization
dc.typeartículo científico

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Acta Agronómica - Universidad Nacional de Colombia