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Biomass prediction of heterogeneous temperate grasslands using an sfm approach based on UAV imaging / Esther Grüner in Agronomy, 9 (2019) 

Public Citation [article]  inAgronomy > 9 (2019) . - 54 Titre : Biomass prediction of heterogeneous temperate grasslands using an sfm approach based on UAV imaging Type de document : Imprimé Auteurs : Esther Grüner ; Thomas Astor ; Michael Wachendorf Année de publication : 2019 Article en page(s) : 54 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Télédétection Résumé : An early and precise yield estimation in intensive managed grassland is mandatory for economic management decisions. RGB (red, green, blue) cameras attached on an unmanned aerial vehicle (UAV) represent a promising non-destructive technology for the assessment of crop traits especially in large and remote areas. Photogrammetric structure from motion (SfM) processing of the UAV-based images into point clouds can be used to generate 3D spatial information about the canopy height (CH). The aim of this study was the development of prediction models for dry matter yield (DMY) in temperate grassland based on CH data generated by UAV RGB imagingover a whole growing season including four cuts. The multi-temporal study compared the remote sensing technique with two conventional methods, i.e., destructive biomass sampling and ruler height measurements in two legume-grass mixtures with red clover (Trifolium pratense L.) and lucerne (Medicago sativa L.) in combination with Italian ryegrass (Lolium multiflorum Lam.). To cover the full range of legume contribution occurring in a practical grassland, pure stands of legumes and grasses contained in each mixture were also investigated. The results showed, that yield prediction by SfM-based UAV RGB imaging provided similar accuracies across all treatments (R2 = 0.59–0.81) as the ruler height measurements (R2 = 0.58–0.78). Furthermore, results of yield prediction by UAV RGB imaging demonstrated an improved robustness when an increased CH variability occurred due to extreme weather conditions. It became apparent that morphological characteristics of clover-based canopies (R2 = 0.75) allow a better remotely sensed prediction of total annual yield than for lucerne-grass mixtures (R2 = 0.64), and that these crop-specific models cannot be easily transferred to other grassland types. Lien pérenne : DOI : 10.3390/agronomy9020054 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=151689 Grüner, Esther, Astor, Thomas, Wachendorf, Michael 2019 Biomass prediction of heterogeneous temperate grasslands using an sfm approach based on UAV imaging. Agronomy, 9: 54.

Documents numériques

Consultable Article (2019) URL

Workshop on Sward dynamics, N-flows and forage utilisation in legume-based systems - Proceedings of the 2nd COST 852 worshop held in Grado, Italy 10-12 November 2005 / Michael Wachendorf (2005)

Public Citation Titre : Workshop on Sward dynamics, N-flows and forage utilisation in legume-based systems - Proceedings of the 2nd COST 852 worshop held in Grado, Italy 10-12 November 2005 Type de document : Imprimé Auteurs : Michael Wachendorf ; Áslaug Helgadóttir (1953-) ; Giuseppe Parente Année de publication : 2005 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Agronomie générale [CBNPMP-Thématique] Cycles biogéochimiques (carbone, azote, phosphore,etc...) Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=79204 Wachendorf, Michael, Helgadóttir, Áslaug (1953-), Parente, Giuseppe , 2005. Workshop on Sward dynamics, N-flows and forage utilisation in legume-based systems - Proceedings of the 2nd COST 852 worshop held in Grado, Italy 10-12 November 2005. , .

A pour extrait

• Analyses of genetic change in grass-clover based systems over time / A. Ghesquiere (2005)
• Effect of plant community structure and soil type on indigenous soil microbes / Áslaug Helgadóttir (2005)
• Yield and chemical composition of spring vetch (Vicia sativa L.) cultivars of diverse geographic origin / V. Mihailovic (2005)
• Plant biomass in early secondary succession on ex-erable land in response to manipulation of plant species diversity and identity / I. Santa Regina (2005)
• Developing the role of Lotus species in UK grasslands / Rosemary Collins (2005)
• Biodiversity and plant mixtures in agriculture and ecology / Jan Lepš (2005)
• Breeding forage legumes for enhanced biodiversity / Michael T. Abberton (2005)
• Possibility of growing red clover (Trifolium pratense L.) on acid soil / S. Vasiljevic (2005)
• N flows and N efficiency in legumes based systems : a system overview / S.C. Jarvis (2005)
• The regulation of N fluxes in legume based systems, from plant to ecosystem scale / Jean-Francois Soussana (2005)
• Nitrogen status of white clover and grass mixtures in early spring / T. Gylfadottir (2005)
• Reducing the environmental impact of red clover (Trifolium pratense L.) : quantifying gentypic variation in leaching propensity / Athole Marshall (2005)
• Investigation of seed set in the populations of interspecific clover hybrids between Trifolium pratense L. x Trifoluim diffusum Ehrh. / G. Dabkevicieno (2005)
• Dynamics of white clover root nodules during simulated autumn, winter and spring / M.V. Uleberg (2005)
• Does late sowing improve establishment of red clover in Iceland? / Th. A. Kristjansdottir (2005)
• Effect of white clover companion and management on persistence and yield of contrasting varieties of Lotus corniculatus / L. Johansen (2005)

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
15917	SM	Livre	Bureaux	Restauration écologique	Consultable