Departamento de Física and Millennium Institute for Research in Optics, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla, 487-3, Santiago, Chile.
Complex Systems Group, Facultad de Ingeniería y Ciencias Aplicadas, Universidad de los Andes, Avenida Monseñor álvaro del Portillo No 12.455, Las Condes, Santiago, Chile.
Sci Rep. 2020 Apr 1;10(1):5740. doi: 10.1038/s41598-020-62677-6.
Fragmentation followed by desertification in water-limited resources and/or nutrient-poor ecosystems is a major risk to the biological productivity of vegetation. By using the vegetation interaction-redistribution model, we analyse the interaction between localised vegetation patches. Here we show analytically and numerically that the interaction between two or more patches is always repulsive. As a consequence, only a single localised vegetation patch is stable, and other localised bounded states or clusters of them are unstable. Following this, we discuss the impact of the repulsive nature of the interaction on the formation and the selection of vegetation patterns in fragmented ecosystems.
在水资源有限和/或营养贫瘠的生态系统中，破碎化随后的沙漠化是植被生物生产力的主要风险。通过使用植被相互作用-再分配模型，我们分析了局部植被斑块之间的相互作用。在这里，我们通过分析和数值模拟表明，两个或多个斑块之间的相互作用总是排斥的。因此，只有一个局部的植被斑块是稳定的，而其他局部的有界状态或它们的集群是不稳定的。由此，我们讨论了相互作用的排斥性质对破碎化生态系统中植被模式的形成和选择的影响。
