Center for Ecological Research, Northeast Forestry University, Harbin, 150040, China.
Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin, 150040, China.
Nat Commun. 2020 Jun 17;11(1):3072. doi: 10.1038/s41467-020-16881-7.
Biodiversity on the Earth is changing at an unprecedented rate due to a variety of global change factors (GCFs). However, the effects of GCFs on microbial diversity is unclear despite that soil microorganisms play a critical role in biogeochemical cycling. Here, we synthesize 1235 GCF observations worldwide and show that microbial rare species are more sensitive to GCFs than common species, while GCFs do not always lead to a reduction in microbial diversity. GCFs-induced shifts in microbial alpha diversity can be predominately explained by the changed soil pH. In addition, GCF impacts on soil functionality are explained by microbial community structure and biomass rather than the alpha diversity. Altogether, our findings of GCF impacts on microbial diversity are fundamentally different from previous knowledge for well-studied plant and animal communities, and are crucial to policy-making for the conservation of microbial diversity hotspots under global changes.
由于各种全球变化因素 (GCF) 的影响，地球上的生物多样性正以前所未有的速度发生变化。然而，尽管土壤微生物在生物地球化学循环中起着关键作用，但 GCF 对微生物多样性的影响尚不清楚。在这里，我们综合了全球范围内 1235 个 GCF 观测结果，表明微生物稀有物种比常见物种对 GCF 更敏感，而 GCF 并不总是导致微生物多样性减少。GCF 引起的微生物 α 多样性变化可以主要用土壤 pH 的变化来解释。此外，微生物群落结构和生物量而不是 α 多样性解释了 GCF 对土壤功能的影响。总的来说，我们发现 GCF 对微生物多样性的影响与之前对研究充分的植物和动物群落的认识有根本的不同，这对于在全球变化下保护微生物多样性热点的政策制定至关重要。
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