Effects of biochar on bacterial communities in a newly established landfill cover topsoil

Wong, James Tsz Fung1; Chen, Xunwen2; Deng, Wenjing3; Chai, Yemao3; Ng, Charles Wang Wai1; Wong, Ming Hung2,3,4,5

2019-04-15

10.1016/j.jenvman.2019.02.010

JOURNAL OF ENVIRONMENTAL MANAGEMENT   影响因子和分区

0301-4797

1095-8630

Recent studies revealed the benefits of applying biochar in landfill final cover soil, such as adsorbing odorous compounds and promoting microbial methane oxidation. Most of these processes are related to the soil bacterial communities. However, the effects of biochar application on the overall bacterial community in newly established landfill cover soil are not yet understood, especially in field condition. The objective of the present field study is to investigate the effects of biochar on the diversity of soil bacterial community 3 months after incubation (short-term). Landfill final cover topsoil (0.6 m) was amended with 0 (control), 5, and 10% (w/w) of biochar derived from peanut-shell and wheat straw. Soil bacterial communities were analysed using the 16S rRNA-based T-RFLP approach. Biochar application significantly (p < 0.05) increased the diversity of soil bacterial communities. The Shannon diversity index of bacterial communities in soil amended with 5 and 10% of biochar was increased from 3.34 to 3.85 and 3.92, respectively. There were four bacterial phyla recorded found at both control and amended soils, namely Actinobacteria, Bacteroidetes, Firmicutes, and Proteobacteria. In addition, Gemmatimonadetes was found only in soil amended with 10% biochar. The interactions between soil bacterial communities and measured soil parameters including moisture content, electrical conductivity, total organic matter, total nitrogen and total phosphorus were found to be statistically non-significant (p > 0.05), according to the canonical correspondence analysis (CCA). This may be due to the highly heterogeneous nature of landfill soil. Results from this study revealed that short-term biochar application already altered the soil physicochemical properties and increased the diversity of soil bacterial communities.

Microorganisms Landfill restoration Soil amendment Organic matter Sanitary landfill T-RFLP

SCI

英语

通讯

Collaborative Research Fund by the Research Grants Council of Hong Kong[HKUST6/CRF/12R]

Environmental Sciences & Ecology

Environmental Sciences

WOS:000461410000066

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD

ENVIRONMENT/ECOLOGY

Web of Science

1.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Kowloon, Room 4607,Clear Water Bay, Hong Kong, Peoples R China
2.Southern Univ Sci & Technol, State Environm Protect Key Lab Integrated Surface, Shenzhen, Peoples R China
3.Educ Univ Hong Kong, Dept Sci & Environm Studies, Tai Po, Off B3-2-F-33, Hong Kong, Peoples R China
4.Educ Univ Hong Kong, CHEER, Tai Po, Hong Kong, Peoples R China
5.Southern Univ Sci & Technol, Guangdong Prov Key Lab Soil & Groundwater Pollut, Shenzhen, Peoples R China

Wong, James Tsz Fung,Chen, Xunwen,Deng, Wenjing,et al. Effects of biochar on bacterial communities in a newly established landfill cover topsoil[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2019,236:667-673.

Wong, James Tsz Fung,Chen, Xunwen,Deng, Wenjing,Chai, Yemao,Ng, Charles Wang Wai,&Wong, Ming Hung.(2019).Effects of biochar on bacterial communities in a newly established landfill cover topsoil.JOURNAL OF ENVIRONMENTAL MANAGEMENT,236,667-673.

Wong, James Tsz Fung,et al."Effects of biochar on bacterial communities in a newly established landfill cover topsoil".JOURNAL OF ENVIRONMENTAL MANAGEMENT 236(2019):667-673.