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Title: Leaf shapes and venation patterns
Authors: Reis, A. Heitor
Editors: Rocha, L. A. O.
Lorente, Sylvie
Bejan, Adrian
Keywords: leaf shapes
venation patterns
water ascent
Constructal Law
Issue Date: 2012
Publisher: Springer science, USA
Citation: “Leaf Shapes and Venation Patterns”, Ch. 3 in Constructal Law and the Unifying Principle of Design, Springer, N. York.(2012).
Abstract: We present an analysis of leaf shapes and venation patterns based on a new assumption of the way how water flows in plants, together with the assumption that leaf shapes and leaf venation patterns have evolved in time such as to provide easier and easier access to its internal currents (Constructal Law). Then, by minimizing the global resistance to flow we anticipate the number of veins in relation to leaf shape (slenderness and vein insertion angle) and prevalent environmental conditions (represented by the potential for leaf water intake from the atmosphere). We also anticipate that leaves in dry climates will be slender and shorter, and with more veins as compared with those of plants adapted to wet environments. We finish by showing some cases in which the theory describes the characteristic of real leaves closely.
ISBN: 978-1-4614-5048-1
Type: bookPart
Appears in Collections:CGE - Publicações - Capítulos de Livros

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