捕捉土壤微生物群落鲁棒性与可塑性的简单度量
Simple measures to capture the robustness and the plasticity of soil microbial communities
AI总结：
本文基于种群分布提出两种简单度量，揭示土壤微生物群落在种群平衡上具有鲁棒性，而在物种组成上表现出可塑性与适应性。
摘要：
已知土壤微生物群落对诸如营养输入等扰动具有鲁棒性，这似乎构成了土壤改良的障碍。另一方面，其可适应的一面也已被报道。在此，我们基于种群分布提出了针对土壤微生物群落这些看似矛盾的特征——鲁棒性与可塑性——的简单度量。第一个度量是种群平衡的相似性，即分布函数的形状，研究发现其对营养输入表现出恢复力。另一个度量是按种群排序衡量的物种组成相似性，它在种群平衡恢复期间表现出可适应的响应。这些结果清楚地表明，土壤微生物系统在其种群平衡方面是鲁棒的（或稳态的），而物种组成则相当具有可塑性和适应性。
英文摘要：
Soil microbial communities are known to be robust against perturbations such as nutrition inputs, which appears as an obstacle for the soil improvement. On the other hand, its adaptable aspect has been also reported. Here we propose simple measures for these seemingly contradicting features of soil microbial communities, robustness and plasticity, based on the distribution of the populations. The first measure is the similarity in the population balance, i.e. the shape of the distribution function, which is found to show resilience against the nutrition inputs. The other is the similarity in the composition of the species measured by the rank order of the population, which shows an adaptable response during the population balance is recovering. These results clearly show that the soil microbial system is robust (or, homeostatic) in its population balance, while the composition of the species is rather plastic and adaptable.
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