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. 2022 Jan 3;12:789034. doi: 10.3389/fmicb.2021.789034

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Copyright © 2022 Gao, Tian, Khashi u Rahman and Wu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Relative influence of soil physicochemical properties on abundance of bacteria was evaluated using relative weight analysis (A). Multivariate regression tree (MRT) analysis of alpha diversity (observed species, Chao 1, Shannon and Simpson indexes) of bacterial communities and soil physicochemical properties (B). Treatments and the number of samples included in the analysis are shown under bar plots. AK, available potassium; AP, available phosphorus; C/N, carbon to nitrogen ratio; SOM, soil organic matter; and TN, total nitrogen.