韦革宏、焦硕等《Nature Communications》2024年

论文题目：Land conversion to agriculture induces taxonomic homogenization of soil microbial communities globally

论文作者：Ziheng Peng, Xun Qian, Yu Liu, Xiaomeng Li, Hang Gao, Yining An, Jiejun Qi, Lan Jiang, Yiran Zhang, Shi Chen, Haibo Pan, Beibei Chen, Chunling Liang, Marcel G. A. van der Heijden, Gehong Wei & Shuo Jiao

论文摘要：

Agriculture contributes to a decline in local species diversity and to above- and below-ground biotic homogenization. Here, we conduct a continental survey using 1185 soil samples and compare microbial communities from natural ecosystems (forest, grassland, and wetland) with converted agricultural land. We combine our continental survey results with a global meta-analysis of available sequencing data that cover more than 2400 samples across six continents. Our combined results demonstrate that land conversion to agricultural land results in taxonomic and functional homogenization of soil bacteria, mainly driven by the increase in the geographic ranges of taxa in croplands. We find that 20% of phylotypes are decreased and 23% are increased by land conversion, with croplands enriched in Chloroflexi, Gemmatimonadota, Planctomycetota, Myxcoccota and Latescibacterota. Although there is no significant difference in functional composition between natural ecosystems and agricultural land, functional genes involved in nitrogen fixation, phosphorus mineralization and transportation are depleted in cropland. Our results provide a global insight into the consequences of land-use change on soil microbial taxonomic and functional diversity.

农业导致当地物种多样性下降，地上和地下生物同质化。本研究利用1185个土壤样本进行了大陆调查，并比较了自然生态系统(森林、草地和湿地)与农用地的微生物群落。我们将我们的大陆调查结果与覆盖六大洲2400多个样本的可用测序数据的全球荟萃分析相结合。综合研究结果表明，农用地导致土壤细菌的分类和功能同质化，这主要是由于农田分类群的地理范围增加所致。研究发现，通过土地改造，20%的种型减少了，23%的种型增加了，其中Chloroflexi、Gemmatimonadota、Planctomycetota、Myxcoccota和Latescibacterota在农田中富集。虽然自然生态系统与农田在功能组成上没有显著差异，但参与固氮、磷矿化和运输的功能基因在农田中被耗尽。我们的研究结果为全面了解土地利用变化对土壤微生物分类和功能多样性的影响提供了一个视角。

论文链接：https://www.nature.com/articles/s41467-024-47348-8