Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, Jiangsu, China.
Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resources and Environment, Linyi University, Linyi, 276000, Shandong, China.
Bull Environ Contam Toxicol. 2019 Oct;103(4):642-650. doi: 10.1007/s00128-019-02687-x. Epub 2019 Aug 19.
In this study, the responses of soil bacterial communities to biochar amendment in different soils were investigated. Biochar amendment had not significantly changed the bacterial richness and diversity in black soil, fluvo-aquic soil and red soil, but shifted all the soil bacterial community structures. Biochar amendment mainly increased the growth of low-abundance bacteria in fluvo-aquic soil and that of high-abundance bacteria in red soil. The most abundant bacterial phylum in black soil and fluvo-aquic soil, Proteobacteria, increased after biochar addition, while Chloroflexi, the most abundant phylum in red soil, decreased after biochar addition. Some bacterial phyla responded consistently to biochar amendment. However, many more bacterial phyla responded differently to biochar amendment in different soils, especially those phyla present at low abundances. Therefore, our study confirmed that the responses of soil bacterial communities to the same biochar were specific to both soil type and bacterial phylum.
本研究调查了生物炭添加对不同土壤中土壤细菌群落的响应。生物炭添加并未显著改变黑土、潮土和红壤中的细菌丰富度和多样性，但改变了所有土壤细菌群落结构。生物炭添加主要增加了潮土中低丰度细菌和红土中高丰度细菌的生长。黑土和潮土中最丰富的细菌门是变形菌门，添加生物炭后其丰度增加，而红土中最丰富的菌门是绿弯菌门，添加生物炭后其丰度降低。一些细菌门对生物炭添加的响应一致。然而，更多的细菌门对生物炭添加的响应在不同土壤中不同，尤其是那些低丰度的细菌门。因此，我们的研究证实，土壤细菌群落对同一生物炭的响应与土壤类型和细菌门都有关。
