Long-term nitrogen input alters plant and soil bacterial, but not fungal beta diversity in a semiarid grassland
Long-term nitrogen input alters plant and soil bacterial, but not fungal beta diversity in a semiarid grassland
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长期氮输入会改变半干旱草原的植物和土壤细菌，但不会改变真菌的β多样性
DOI：
10.1111/gcb.15681
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发表时间：
2021
影响因子：
11.6
通讯作者：
Jiang Lin
中科院分区：
文献类型：
--
作者：
Liu Weixing;Liu Lingli;Yang Xian;Deng Meifeng;Wang Zhou;Wang P;eng;Yang Sen;Li Ping;Peng Ziyang;Yang Lu;Jiang Lin
Anthropogenic nitrogen (N) input is known to alter plant and microbial α‐diversity, but how N enrichment influences β‐diversity of plant and microbial communities remains poorly understood. Using a long‐term multilevel N addition experiment in a temperate steppe, we show that plant, soil bacterial and fungal communities exhibited different responses in their β‐diversity to N input. Plant β‐diversity decreased linearly as N addition increased, as a result of increased directional environmental filtering, where soil environmental properties largely explained variation in plant β‐diversity. Soil bacterial β‐diversity first increased then decreased with increasing N input, which was best explained by corresponding changes in soil environmental heterogeneity. Soil fungal β‐diversity, however, remained largely unchanged across the N gradient, with plant β‐diversity, soil environmental properties, and heterogeneity together explaining an insignificant fraction of variation in fungal β‐diversity, reflecting the importance of stochastic community assembly. Our study demonstrates the divergent effect of N enrichment on the assembly of plant, soil bacterial and fungal communities, emphasizing the need to examine closely associated fundamental components (i.e., plants and microorganisms) of ecosystems to gain a more complete understanding of ecological consequences of anthropogenic N enrichment.
