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Effects of biochar on Cd and Pb mobility and microbial community composition in a calcareous soil planted with tobacco
Jianzhong Cheng;  Yunlong Li;  Weichang Gao;  Yi Chen;  Wenjie Pan;  Xinqing Lee;  Yuan Tang
2018
发表期刊Biology & Fertility of Soils
卷号54期号:3页码:373-383
摘要

An experiment was conducted with tobacco (Nicotiana tabacum L.) grown in a Cd- and Pb-contaminated calcareous soil amended with 0.0, 1.0, 2.5, and 5.0% (w/w) tobacco stalk biochar (BC). The BC amendment significantly increased organic matter, total C, N, P, and K contents of soil, and the C/N ratio. Bioavailable metal concentrations (DTPA extraction) decreased by increasing BC application rate. The 5.0% BC amendment significantly decreased the DTPA-extractable Cd and Pb by 10.4 and 13.6%, respectively. Correspondingly, the bioaccumulation and translocation factors of Cd and Pb also decreased by increasing the BC addition rates and this indicated that BC inhibited the uptake and transfer of both Cd and Pb by tobacco plants. Moreover, high-throughput sequencing revealed that BC increased Chao1 richness, Shannon's diversity and Simpson's diversity of bacterial communities of soil. The relative abundance and genera composition of Adhaeribacter, Rhodoplanes, Pseudoxanthomonas, and Candidatus Xiphinematobacter increased under BC treatments, while those of Kaistobacter, Lacibacter, and Pirellula decreased. Overall, BC increased soil nutrients (C, N, P, and K contents), enhanced bacterial diversity indexes and richness, and changed the bacterial community composition, which may all have contributed to reduce the mobility and bioavailability of both Cd and Pb in a calcareous soil.

关键词Biochar Heavy Metal Bioavailability Translocation Bacterial Community
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8693
专题环境地球化学国家重点实验室
作者单位1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Guizhou Academy of Tobacco Science, Guiyang 550081, China
推荐引用方式
GB/T 7714
Jianzhong Cheng;Yunlong Li;Weichang Gao;Yi Chen;Wenjie Pan;Xinqing Lee;Yuan Tang. Effects of biochar on Cd and Pb mobility and microbial community composition in a calcareous soil planted with tobacco[J]. Biology & Fertility of Soils,2018,54(3):373-383.
APA Jianzhong Cheng;Yunlong Li;Weichang Gao;Yi Chen;Wenjie Pan;Xinqing Lee;Yuan Tang.(2018).Effects of biochar on Cd and Pb mobility and microbial community composition in a calcareous soil planted with tobacco.Biology & Fertility of Soils,54(3),373-383.
MLA Jianzhong Cheng;Yunlong Li;Weichang Gao;Yi Chen;Wenjie Pan;Xinqing Lee;Yuan Tang."Effects of biochar on Cd and Pb mobility and microbial community composition in a calcareous soil planted with tobacco".Biology & Fertility of Soils 54.3(2018):373-383.
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