Vegetation spots and stripes: Dissipative structures in arid landscapes
Vegetation spots and stripes: Dissipative structures in arid landscapes
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DOI：
10.1002/qua.10878
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发表时间：
2004-05-20
影响因子：
2.2
通讯作者：
Lefever, R
中科院分区：
文献类型：
--
作者：
Lejeune, O;Tlidi, M;Lefever, R
在许多地区观察到的大规模植被格局是由于存在促进和竞争的相互作用，影响植物的共同发展。为了形成这种模式，竞争性的相互作用必须比促进性的相互作用范围更广。干旱影响图案的对称性。当它增加时，人们首先发现由稀疏植被的斑点构成的图案，然后转变为稀疏和较厚植被的条纹交替，最后变成由裸露地面分隔的植被斑点图案。下面介绍的模型和非线性分析解释了观察结果。(C)2004 Wiley Periodicals，Inc.
The large-scale vegetation patterns observed in many and regions are due to the existence of facilitative and competitive interactions that affect the communal development of plants. For the patterns to form, it is necessary that competitive interactions be of longer range than facilitative interactions. Aridity affects the pattern's symmetry properties. As it increases, one first finds patterns constituted of spots of sparser vegetation, which then transform into an alternation of stripes of sparser and thicker vegetation, and finally into a pattern of vegetation spots separated by bare ground. The model and nonlinear analysis presented below explains the observations. (C) 2004 Wiley Periodicals, Inc.