火山
镉
环境科学
环境化学
地球科学
地质学
地球化学
化学
有机化学
作者
Zihua Zhang,Daolong Xu,Tao Huang,Qing Zhang,Yingyue Li,Jian Zhou,Ruifan Zou,Xiaoyu Li,Jin Chen
标识
DOI:10.1016/j.scitotenv.2024.171529
摘要
Soil microbial communities are essential to biogeochemical cycles. However, the responses of microorganisms in volcanic soil with high heavy metal levels remain poorly understood. Here, two areas with high levels of cadmium (Cd) from the same volcano were investigated to determine their archaeal composition and assembly. In this study, the Cd concentrations (0.32–0.38 mg/ kg) in the volcanic soils exceeded the standard risk screening values (GB15618–2018) and correlated with archaeal communities strongly (P < 0.05). Moreover, the area with elevated levels of Cd (periphery) exhibited a greater diversity of archaeal species, albeit with reduced archaeal activity, compared to the area with lower levels of Cd (center). Besides, stochastic processes mainly governed the archaeal communities. Furthermore, the co-occurrence network was simplest in the periphery. The proportion of positive links between taxa increased positively with Cd concentration. Moreover, four keystone taxa (all from the family Nitrososphaeraceae) were identified from the archaeal networks. In its entirety, this study has expanded our comprehension of the variations of soil archaeal communities in volcanic areas with elevated cadmium levels and serves as a point of reference for the agricultural development of volcanic soils in China.
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