Thermodynamic stability of ecosystems
Thermodynamic stability of ecosystems
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DOI：
10.1016/j.jtbi.2005.04.019
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发表时间：
2005-12-07
影响因子：
2
通讯作者：
Michaelian, K
中科院分区：
文献类型：
--
作者：
Michaelian, K
从非平衡热力学角度研究生态系统在宏观进化轨迹停滞期间的稳定性。物种个体被视为开放热力学系统中熵产生和熵交换的单位。在经典不可逆热力学理论的框架内，在外部约束恒定的条件下，这样的系统会自然地向全局稳定的热力学稳态演化。因此，有人提出，生态稳态或停滞是热力学稳态的特例，而通过自然选择的群落稳定性演化是非平衡热力学指令的表现。此外，有人认为，导致生态系统演替的停滞标点可能是外部约束通过热力学临界点的变化引起的非平衡“相变”的表现。 (c) 2005 Elsevier Ltd. 保留所有权利。
The stability of ecosystems during periods of stasis in their macro-evolutionary trajectory is studied from a non-equilibrium thermodynamic perspective. Individuals of the species are considered as units of entropy production and entropy exchange in an open thermodynamic system. Within the framework of the classical theory of irreversible thermodynamics, and under the condition of constant external constraints, such a system will naturally evolve toward a globally stable thermodynamic stationary state. It is thus suggested that the ecological steady state, or stasis, is a particular case of the thermodynamic stationary state, and that the evolution of community stability through natural selection is a manifestation of non-equilibrium thermodynamic directives. Furthermore, it is argued that punctuation of stasis leading to ecosystem succession, may be a manifestation of non-equilibrium "phase transitions" brought on by a change of external constraints through a thermodynamic critical point. (c) 2005 Elsevier Ltd. All rights reserved.