Skip to main content

Advertisement

Log in

Effects of biochar on Cd and Pb mobility and microbial community composition in a calcareous soil planted with tobacco

  • Original Paper
  • Published:
Biology and Fertility of Soils Aims and scope Submit manuscript

Abstract

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.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Similar content being viewed by others

References

Download references

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 41503080; 41773144), the Major S & T Special Project of Guizhou Province (No. [2014] 6015-2-1), the Key Technologies R & D Project in Agriculture of Guizhou Province (Nos. NY [2013] 3019; NY [2015] 3001-1), the “Thousand Talents Plan” of High-level Innovative Talents Cultivation Program of Guizhou Province (No. [2014] 122) and the National Natural Science Foundation of China (Grant No. U1612441). We also thank Editor-in-Chief Professor Paolo Nannipieri and three anonymous reviewers for their constructive comments and suggestions that improve the manuscript greatly and LetPub for improving English language.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Jianzhong Cheng.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Cheng, J., Li, Y., Gao, W. et al. Effects of biochar on Cd and Pb mobility and microbial community composition in a calcareous soil planted with tobacco. Biol Fertil Soils 54, 373–383 (2018). https://doi.org/10.1007/s00374-018-1267-8

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00374-018-1267-8

Keywords

Navigation