各向同性环境条件下植被螺旋和弧线的观测与建模：干旱景观中的耗散结构
Observation and modelling of vegetation spirals and arcs in isotropic environmental conditions: dissipative structures in arid landscapes.
作者信息
Tlidi M, Clerc M G, Escaff D, Couteron P, Messaoudi M, Khaffou M, Makhoute A
机构信息
Département de Physique, Faculté des Sciences, Université Libre de Bruxelles (U.L.B.), CP. 231, Campus Plaine, Bruxelles, 1050 Belgium
Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile.
出版信息
Philos Trans A Math Phys Eng Sci. 2018 Nov 12;376(2135):20180026. doi: 10.1098/rsta.2018.0026.
We report for the first time on the formation of spirals like vegetation patterns in isotropic and uniform environmental conditions. The vegetation spirals are not waves and they do not rotate. They belong to the class of dissipative structures found out of equilibrium. Isolated or interacting spirals and arcs observed in South America (Bolivia) and North Africa (Morocco) are interpreted as a result of curvature instability that affects the circular shape of localized patches. The biomass exhibits a dynamical behaviour with arcs that transform into spirals. Interpretation of observations and of the predictions provided by the theory is illustrated by recent measurements of peculiar plant morphology (the alfa plant, or L.) originated from northwestern Africa and the southern part of the Iberian Peninsula.This article is part of the theme issue 'Dissipative structures in matter out of equilibrium: from chemistry, photonics and biology (part 2)'.
我们首次报道了在各向同性和均匀环境条件下形成的类似植被图案的螺旋结构。植被螺旋不是波，也不旋转。它们属于在非平衡状态下发现的耗散结构类别。在南美洲（玻利维亚）和北非（摩洛哥）观察到的孤立或相互作用的螺旋和弧线，被解释为曲率不稳定性影响局部斑块圆形形状的结果。生物量表现出一种动态行为，弧线会转变为螺旋。对观测结果和理论预测的解释通过最近对源自非洲西北部和伊比利亚半岛南部的特殊植物形态（阿尔法植物，即 ）的测量得到了说明。本文是主题为“非平衡物质中的耗散结构：从化学、光子学到生物学（第2部分）”的一部分。
Zotero 插件