RATP: a model for simulating the spatial distribution of radiation absorption, transpiration and photosynthesis within canopies: application to an isolated tree crown

Sinoquet, Hervé; Roux, Xavier Le; Adam, Boris; Améglio, Thierry; Daudet, F.A.

doi:10.1046/j.1365-3040.2001.00694.x

Cited by 194 publications

(175 citation statements)

References 51 publications

(65 reference statements)

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“…intercepting surfaces, especially the spatial distribution of leaf area density). The canopy can be described as a multi-layered medium [82], a collection of crowns modelled by geometric shapes [76] or a matrix of 3D cells [123]. In the latter case the space occupied by vegetation is divided into horizontal layers and vertical slices, the intersection of which makes cubic cells.…”

Section: Representation Of Canopy Architecture For Simulating Tree-enmentioning

confidence: 99%

“…[82,134]), or to describe the spatial variations at an intracanopy scale (e.g. [31,123]). Thus all quoted models explicitly include radiation transfer, leaf photosynthesis and/or energy balance calculations.…”

Section: Scalar Transfermentioning

confidence: 99%

“…[31,82]). In Sinoquet et al's model [123], the horizontal attenuation of wind speed in an isolated crown is approximated by an empirical relationship (see [29]). On the other hand, scalar transfer has never been included in structuralfunctional tree models.…”

Section: Current Representations Of Tree Foliage/environment Interactmentioning

confidence: 99%

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Short term interactions between tree foliage and the aerial environment: An overview of modelling approaches available for tree structure-function models

Sinoquet

Roux

2000

Ann. For. Sci.

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-Functional-structural tree models represent tree/aboveground environment interactions. Actually, plant architecture and function induce large variations in environmental variables within the canopy, while these variations themselves induce a range of responses at the organ scale which modulate plant function and architecture dynamics. This paper gives an overview of (i) processes involved in the short-term interactions between the tree foliage and the aboveground environment and (ii) associated modelling approaches. Then, it is shown that detailed models of tree foliage/aboveground environment interactions can be used to test simplifying assumptions such as the constancy of light or water use efficiency recently used in several functional-structural tree models. We conclude that a good knowledge of basic processes involved in these short-term interactions is available. The point is now to compare models focusing on tree-atmosphere exchanges, and to use these models to test assumptions and derive summary submodels for tree functional-structural models.microclimate / radiation / wind / photosynthesis / transpiration / acclimation / modelling / integration Résumé -Interactions à court terme entre le feuillage de l'arbre et son environnement aérien : une revue des approches de modélisation disponibles pour les modèles d'arbre structure-fonction. Les modèles d'arbres structure -fonction représentent les interactions entre l'arbre et son environnement aérien. En effet, la présence et le fonctionnement de la plante induisent de grandes variations des variables climatiques dans le couvert, et ces variations du microclimat peuvent elles mêmes moduler les réponses de la plante à l'échelle de l'organe (et donc son fonctionnement et son développement). Cet article présente une revue critique des méca-nismes impliqués à court terme dans les interactions entre le feuillage de l'arbre et son environnement microclimatique, ainsi que les approches proposées pour leur modélisation. Il est ensuite montré que des modèles détaillant les interactions entre l'arbre et son environnement aérien peuvent servir à tester des hypothèses simplificatrices du fonctionnement de l'arbre, comme la constance de l'efficience d'utilisation de la lumière ou de l'eau. Nous concluons que les processus impliqués dans ces interactions sont assez bien connus. Il faut maintenant comparer les modèles de simulation des échanges plante-atmosphère, et développer des modèles simples qui puissent être intégrés dans les modèles dynamiques structure-fonction.

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Section: Representation Of Canopy Architecture For Simulating Tree-enmentioning

confidence: 99%

Section: Scalar Transfermentioning

confidence: 99%

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Short term interactions between tree foliage and the aerial environment: An overview of modelling approaches available for tree structure-function models

Sinoquet

Roux

2000

Ann. For. Sci.

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“…In our project, we need models of trees in the context of urban climatology. The cooling effect of individual trees can be simulated with ecophysiological models, such as the model RATP (Sinoquet et al, 2001). Based on the exact geometry of a tree, this kind of microclimate model is able to simulate the level of evapotranspiration produced by the tree (Bournez et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

From TLS Point Clouds to 3d Models of Trees: A Comparison of Existing Algorithms for 3d Tree Reconstruction

Bournez

Landes

Saudreau

et al. 2017

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:3D models of tree geometry are important for numerous studies, such as for urban planning or agricultural studies. In climatology, tree models can be necessary for simulating the cooling effect of trees by estimating their evapotranspiration. The literature shows that the more accurate the 3D structure of a tree is, the more accurate microclimate models are. This is the reason why, since 2013, we have been developing an algorithm for the reconstruction of trees from terrestrial laser scanner (TLS) data, which we call TreeArchitecture. Meanwhile, new promising algorithms dedicated to tree reconstruction have emerged in the literature. In this paper, we assess the capacity of our algorithm and of two others -PlantScan3D and SimpleTree-to reconstruct the 3D structure of trees. The aim of this reconstruction is to be able to characterize the geometric complexity of trees, with different heights, sizes and shapes of branches. Based on a specific surveying workflow with a TLS, we have acquired dense point clouds of six different urban trees, with specific architectures, before reconstructing them with each algorithm. Finally, qualitative and quantitative assessments of the models are performed using reference tree reconstructions and field measurements. Based on this assessment, the advantages and the limits of every reconstruction algorithm are highlighted. Anyway, very satisfying results can be reached for 3D reconstructions of tree topology as well as of tree volume.

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“…Dr Sinoquet was an exceptional scientist. At the forefront of his many contributions, he devised one of the first integrated models of plant function, coupling radiation, absorption, transpiration and photosynthesis (Sinoquet et al 2001), which was subsequently used by many other research groups. In parallel, to address the difficult questions raised by the quantitative assessment of FSPM models, Dr Sinoquet designed original methods for digitising tree architecture (Sinoquet and Rivet 1997) and for automatically estimating leaf areas in trees from photographs (Phattaralerphong and Sinoquet 2005).…”

mentioning

confidence: 99%

Foreword: Studying plants with functional - structural models

Hanan¹,

Prusinkiewicz²

2008

Functional Plant Biol.

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Abstract. Functional-structural plant models (FSPM) explore the manifold relations between a plant's structure and the processes that underlie its growth and development. Here we introduce selected papers presented at the 5th International Workshop on Functional-Structural Plant Models, held in Napier, New Zealand, 2007. The papers range from the microscopic scale of meristems to the macroscopic scales of whole plants and plant communities, and cover a wide range of plants, from algae to trees. The topics include examples of comprehensive functional-structural models, models of key processes such as partitioning of resources, software for modelling plants and plant environment, data acquisition techniques and applications of functional-structural plant models.Additional keywords: light, modular plant architecture, plant modelling, resource acquisition and partitioning, simulation.A plant is a decentralised system, every leaf operating as a photosynthetic factory, each apical meristem and root tip a potential site of new construction, connected by transport systems for distribution of water, carbon and nutrients to the locations where they are most needed. The broad range of physiological processes essential for the plant's survival is coordinated by signals acting over short and long distances, under genetic control. These processes, and the resulting spatio-temporal structure of plants, are further affected by plant environment: light powering the system, the availability of water and minerals, interaction with neighbouring plants and other organisms, and other abiotic and biotic influences. The same factors are also a source of evolutionary pressures on the plant. Computational modelling, driven and validated by field or laboratory experiments, plays an increasingly important role in the analysis and understanding of individual processes and structures, and their integration into a comprehensive view of entire plants. The resulting knowledge and models have potential value in applied plant sciences, where they can assist in the refinement of agricultural, horticultural, and forestry practice.The state of the art in plant modelling was showcased at The series explores relations between plant structure and the processes that underlie its growth and form. In a feedback loop, the structure provides material support for the various functions, but also results from them. The initial focus of the series, functional-structural modelling of trees at the architectural level, was subsequently extended to herbaceous plants and to both the microscopic scale of molecular-level processes and the macroscopic scale of plant communities. The whole gamut of scales and a wide range of plants, from algae to trees, was represented in the 59 oral presentations and 50 posters featured at FSPM07.This special issue of Functional Plant Biology contains 29 papers selected from those presented at FSPM07. As computational modelling inherently depends on appropriate software, the opening papers by Hemmerling et al. (2008) and Pradal et al. ...

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RATP: a model for simulating the spatial distribution of radiation absorption, transpiration and photosynthesis within canopies: application to an isolated tree crown

Cited by 194 publications

References 51 publications

Short term interactions between tree foliage and the aerial environment: An overview of modelling approaches available for tree structure-function models

Short term interactions between tree foliage and the aerial environment: An overview of modelling approaches available for tree structure-function models

From TLS Point Clouds to 3d Models of Trees: A Comparison of Existing Algorithms for 3d Tree Reconstruction

Foreword: Studying plants with functional - structural models

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