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soil bacterial depth distribution controlled by soil orders and soil forms

soil Ecology Letters 2022年第1期4卷 69-77页

作者： Peipei Xue Alex B.McBratney Budiman Minasny Tony O'Donnell Vanessa Pino Mario Fajardo Wartini Ng Neil Wilson Rosalind Deaker School of Life and Environmental Sciences The University of SydneyNSW 2015Australia Sydney Institute of Agriculture NSW 2006Australia Faculty of Science The University of Western AustraliaWA 6009Australia

Human disturbances to soils can lead to dramatic changes in soil physical,chemical,and biological *** influence of agricultural activities on the bacterial community over different orders of soil and at depth is still not well *** used the concept of genoform and phenoform to investigate the vertical(down to 1 m depth)soil bacterial community structure in paired genosoils(undisturbed forests)and phenosoils(cultivated vineyards)in different soil *** study was conducted in the Hunter Valley area,New South Wales,Australia,where samples were collected from 3 different soil orders(Calcarosol,Chromosol,and Kurosol),and each soil order consists of a pair of genosoil and *** bacterial community structure was analyzed using highthroughput sequencing of 16S *** showed that bacterial-diversity decreased with depth in phenosoils,however,the trend is less obvious in genoform *** diversity was greater in phenosoils than genosoils,but the trend was reversed in ***,cropping not only affected topsoil bacteria community but also decreased its diversity in the *** community in topsoils was influenced by both soil orders and soil forms,however,in subsoils it was more impacted by soil *** Analysis of Principal Coordinates revealed that cropping increased the similarity of bacterial structures of different soil *** study highlighted the strong influence of agricultural activities on soil microbial distribution with depth,which is controlled by soil order.

关键词： Bacterial distribution soil depth soil forms/land use Genosoil and phenosoil soil type/soil order

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