Scaling-up LAI in coffee agroforestry systems in Costa Rica
Ecosystem Services (ES) provided by coffee plantations may differ according to agricultural practices (monoculture or agroforestry). The leaf area index (LAI) is assumed to be a good parameter to model ecosystem ES. We tested a method to measure leaf area index of coffee agroforestry plantations that display moderate shade or no shade, being valid for a large spatio-temporal scale, relying on a vegetation index (NDVI) derived from satellite imagery (Very High Resolution THRS and medium resolution MODIS). Time series (2001-2009) of LAI were obtained following two steps of calibration: a first calibration between the actual LAI measured in the field and the NDVI THRS image (R ² = 0.80) in order to obtain maps of LAI at high resolution; the second step between the high-resolution LAI map and NDVI from MODIS (R ² = 0.66). We studied the effects of environmental and agronomic factors on LAI. The seasonal dynamics of LAI (2.5 and 4 in the dry season in the wet season) was connected with variations in air humidity and solar radiation. We found that the LAI of some key months was correlated with coffee yield. The dynamic of LAI was also influenced by agricultural practices such as the pruning of coffee. This work is a first step towards spatial modeling of ecosystem services and production.
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Subjects: | U30 - Méthodes de recherche, F08 - Systèmes et modes de culture, K01 - Foresterie - Considérations générales, P01 - Conservation de la nature et ressources foncières, agroforesterie, Coffea, modélisation environnementale, http://aims.fao.org/aos/agrovoc/c_207, http://aims.fao.org/aos/agrovoc/c_1720, http://aims.fao.org/aos/agrovoc/c_9000056, http://aims.fao.org/aos/agrovoc/c_1920, |
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dig-cirad-fr-5601742024-01-28T19:15:49Z http://agritrop.cirad.fr/560174/ http://agritrop.cirad.fr/560174/ Scaling-up LAI in coffee agroforestry systems in Costa Rica. Taugourdeau Simon, Le Maire Guerric, Roupsard Olivier, Avelino Jacques, Gomez Delgado Federico, Jones Jeffrey R., Marsden Claire, Robelo A., Barquero Alejandra, Alpizar Edgardo, Rapidel Bruno, Vaast Philippe, Harmand Jean-Michel. 2011. In : Proceedings of the 23rd International Conference on Coffee Science; Bali, Indonesia, October 3-8, 2010 = Actes du 23ème Colloque scientifique international sur le café, Bali, Indonésie, 3-8 octobre 2010. ASIC. Paris : ASIC, 1046-1050. ISBN 978-2-900212-22-6 International Conference on Coffee Science. 23, Bali, Indonésie, 3 Octobre 2010/8 Octobre 2010. Scaling-up LAI in coffee agroforestry systems in Costa Rica Taugourdeau, Simon Le Maire, Guerric Roupsard, Olivier Avelino, Jacques Gomez Delgado, Federico Jones, Jeffrey R. Marsden, Claire Robelo, A. Barquero, Alejandra Alpizar, Edgardo Rapidel, Bruno Vaast, Philippe Harmand, Jean-Michel eng 2011 ASIC Proceedings of the 23rd International Conference on Coffee Science; Bali, Indonesia, October 3-8, 2010 U30 - Méthodes de recherche F08 - Systèmes et modes de culture K01 - Foresterie - Considérations générales P01 - Conservation de la nature et ressources foncières agroforesterie Coffea modélisation environnementale http://aims.fao.org/aos/agrovoc/c_207 http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_9000056 Costa Rica http://aims.fao.org/aos/agrovoc/c_1920 Ecosystem Services (ES) provided by coffee plantations may differ according to agricultural practices (monoculture or agroforestry). The leaf area index (LAI) is assumed to be a good parameter to model ecosystem ES. We tested a method to measure leaf area index of coffee agroforestry plantations that display moderate shade or no shade, being valid for a large spatio-temporal scale, relying on a vegetation index (NDVI) derived from satellite imagery (Very High Resolution THRS and medium resolution MODIS). Time series (2001-2009) of LAI were obtained following two steps of calibration: a first calibration between the actual LAI measured in the field and the NDVI THRS image (R ² = 0.80) in order to obtain maps of LAI at high resolution; the second step between the high-resolution LAI map and NDVI from MODIS (R ² = 0.66). We studied the effects of environmental and agronomic factors on LAI. The seasonal dynamics of LAI (2.5 and 4 in the dry season in the wet season) was connected with variations in air humidity and solar radiation. We found that the LAI of some key months was correlated with coffee yield. The dynamic of LAI was also influenced by agricultural practices such as the pruning of coffee. This work is a first step towards spatial modeling of ecosystem services and production. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/560174/1/document_560174.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=213440 |
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U30 - Méthodes de recherche F08 - Systèmes et modes de culture K01 - Foresterie - Considérations générales P01 - Conservation de la nature et ressources foncières agroforesterie Coffea modélisation environnementale http://aims.fao.org/aos/agrovoc/c_207 http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_9000056 http://aims.fao.org/aos/agrovoc/c_1920 U30 - Méthodes de recherche F08 - Systèmes et modes de culture K01 - Foresterie - Considérations générales P01 - Conservation de la nature et ressources foncières agroforesterie Coffea modélisation environnementale http://aims.fao.org/aos/agrovoc/c_207 http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_9000056 http://aims.fao.org/aos/agrovoc/c_1920 |
spellingShingle |
U30 - Méthodes de recherche F08 - Systèmes et modes de culture K01 - Foresterie - Considérations générales P01 - Conservation de la nature et ressources foncières agroforesterie Coffea modélisation environnementale http://aims.fao.org/aos/agrovoc/c_207 http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_9000056 http://aims.fao.org/aos/agrovoc/c_1920 U30 - Méthodes de recherche F08 - Systèmes et modes de culture K01 - Foresterie - Considérations générales P01 - Conservation de la nature et ressources foncières agroforesterie Coffea modélisation environnementale http://aims.fao.org/aos/agrovoc/c_207 http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_9000056 http://aims.fao.org/aos/agrovoc/c_1920 Taugourdeau, Simon Le Maire, Guerric Roupsard, Olivier Avelino, Jacques Gomez Delgado, Federico Jones, Jeffrey R. Marsden, Claire Robelo, A. Barquero, Alejandra Alpizar, Edgardo Rapidel, Bruno Vaast, Philippe Harmand, Jean-Michel Scaling-up LAI in coffee agroforestry systems in Costa Rica |
description |
Ecosystem Services (ES) provided by coffee plantations may differ according to agricultural practices (monoculture or agroforestry). The leaf area index (LAI) is assumed to be a good parameter to model ecosystem ES. We tested a method to measure leaf area index of coffee agroforestry plantations that display moderate shade or no shade, being valid for a large spatio-temporal scale, relying on a vegetation index (NDVI) derived from satellite imagery (Very High Resolution THRS and medium resolution MODIS). Time series (2001-2009) of LAI were obtained following two steps of calibration: a first calibration between the actual LAI measured in the field and the NDVI THRS image (R ² = 0.80) in order to obtain maps of LAI at high resolution; the second step between the high-resolution LAI map and NDVI from MODIS (R ² = 0.66). We studied the effects of environmental and agronomic factors on LAI. The seasonal dynamics of LAI (2.5 and 4 in the dry season in the wet season) was connected with variations in air humidity and solar radiation. We found that the LAI of some key months was correlated with coffee yield. The dynamic of LAI was also influenced by agricultural practices such as the pruning of coffee. This work is a first step towards spatial modeling of ecosystem services and production. |
format |
conference_item |
topic_facet |
U30 - Méthodes de recherche F08 - Systèmes et modes de culture K01 - Foresterie - Considérations générales P01 - Conservation de la nature et ressources foncières agroforesterie Coffea modélisation environnementale http://aims.fao.org/aos/agrovoc/c_207 http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_9000056 http://aims.fao.org/aos/agrovoc/c_1920 |
author |
Taugourdeau, Simon Le Maire, Guerric Roupsard, Olivier Avelino, Jacques Gomez Delgado, Federico Jones, Jeffrey R. Marsden, Claire Robelo, A. Barquero, Alejandra Alpizar, Edgardo Rapidel, Bruno Vaast, Philippe Harmand, Jean-Michel |
author_facet |
Taugourdeau, Simon Le Maire, Guerric Roupsard, Olivier Avelino, Jacques Gomez Delgado, Federico Jones, Jeffrey R. Marsden, Claire Robelo, A. Barquero, Alejandra Alpizar, Edgardo Rapidel, Bruno Vaast, Philippe Harmand, Jean-Michel |
author_sort |
Taugourdeau, Simon |
title |
Scaling-up LAI in coffee agroforestry systems in Costa Rica |
title_short |
Scaling-up LAI in coffee agroforestry systems in Costa Rica |
title_full |
Scaling-up LAI in coffee agroforestry systems in Costa Rica |
title_fullStr |
Scaling-up LAI in coffee agroforestry systems in Costa Rica |
title_full_unstemmed |
Scaling-up LAI in coffee agroforestry systems in Costa Rica |
title_sort |
scaling-up lai in coffee agroforestry systems in costa rica |
publisher |
ASIC |
url |
http://agritrop.cirad.fr/560174/ http://agritrop.cirad.fr/560174/1/document_560174.pdf |
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