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Erosion reduces soil microbial diversity, network complexity and multifunctionality

Liping QiuCAS Center for Excellence in Quaternary Science and Global Change , Xi’an, Shaanxi, ChinaQian ZhangCollege of the Environment and Ecology, Xiamen University , Xiamen, Fujian, ChinaHansong ZhuCollege of Natural Resources and Environment, Northwest A&F University , Yangling, Shaanxi, ChinaPeter B. ReichHawkesbury Institute for the Environment, Western Sydney University , Penrith South DC, NSW, AustraliaSamiran BanerjeeDepartment of Microbiological Sciences, North Dakota State University , Fargo, ND, USAMarcel G. A. van der HeijdenDepartment of Plant and Microbial Biology, University of Zürich , Zürich, SwitzerlandMichael J. SadowskyBioTechnology Institute, University of Minnesota , St. Paul, MN, USASatoshi IshiiBioTechnology Institute, University of Minnesota , St. Paul, MN, USAXiaoxu JiaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University , Yangling, Shaanxi, ChinaMingan ShaoNorthwest A&F UniversityBaoyuan LiuState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University , Yangling, Shaanxi, ChinaHuan JiaoCollege of Natural Resources and Environment, Northwest A&F University , Yangling, Shaanxi, ChinaHaiqiang LiCollege of Natural Resources and Environment, Northwest A&F University , Yangling, Shaanxi, ChinaXiaorong WeiState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University , Yangling, Shaanxi, China

2021en

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Litsenziya: cc-by-nc

ABI

Annotatsiya

While soil erosion drives land degradation, the impact of erosion on soil microbial communities and multiple soil functions remains unclear. This hinders our ability to assess the true impact of erosion on soil ecosystem services and our ability to restore eroded environments. Here we examined the effect of erosion on microbial communities at two sites with contrasting soil texture and climates. Eroded plots had lower microbial network complexity, fewer microbial taxa, and fewer associations among microbial taxa, relative to non-eroded plots. Soil erosion also shifted microbial community composition, with decreased relative abundances of dominant phyla such as Proteobacteria, Bacteroidetes, and Gemmatimonadetes. In contrast, erosion led to an increase in the relative abundances of some bacterial families involved in N cycling, such as Acetobacteraceae and Beijerinckiaceae. Changes in microbiota characteristics were strongly related with erosion-induced changes in soil multifunctionality. Together, these results demonstrate that soil erosion has a significant negative impact on soil microbial diversity and functionality.

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Identifikatorlar

DOI: 10.1038/s41396-021-00913-1

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