NDLI: Responses of soil microbial community activities and soil physicochemical properties to coal fly ash soil amendment

Content Provider	Springer Nature : BioMed Central
Author	Li, Fangze Qi, Tianqi Zhang, Ge Lin, Xingjie Li, Xiaohua Wu, Zhenqing Men, Shuhui Liu, Hongchao Zhang, Shiwei Huang, Zhanbin
Abstract	Background Hundreds of millions of tons coal fly ash are produced annually to support economic development and industrial production. However, directly applying coal fly ash to agricultural production can decrease the land productivity and pose a threat to the ecosystem due to the poor physicochemical properties and seriously heavy metal pollution. Methods In this study, a field experiment to investigate the effects of coal fly ash as a soil amendment was conducted in Hebei province, China. The coal fly ash (CFA) soil field was mixed with the carrier soil (CS, without containing coal fly ash) at different rates (0–40% mass content) in the 0–20 cm layer of top soil and then mixed with a rotovator. The soil was then amended with 0.45–1.80 kg·m− 2 of G1 soil amendment for planting corn. Purpose The purpose of this study is to investigate the response mechanism of soil microbial community activities, and soil physicochemical properties to soil amendment and carrier soil in coal fly ash soil. Key results The study found that the G1 amendment, which consisted of humic acid, polyacrylamide, zeolite powder, and FeSO4·7H2O, improved the soil chemical properties and physical structure by increasing soil bulk density and macroaggregates. The highest corn yield was observed in B5 (20% CS and 1.3500 kg·m− 2 G1). Meanwhile, the abundance of microorganisms that facilitate the circulation of soil nutrients such as Acidobacteria (77.05%), Sphingomonas (25.60%), Nitrospira (20.78%), Streptomyces (11.32%), and Gaiella (10.20%) was increased. Conclusions Overall, our results indicate that the use of coal fly ash soil as a amendment can enhance soil sustainability by improving soil microbial functions. These findings provide a reference for the development and application of coal fly ash soil amendments.
Related Links	https://annalsmicrobiology.biomedcentral.com/counter/pdf/10.1186/s13213-024-01758-7.pdf
Ending Page	12
Page Count	12
Starting Page	1
File Format	HTM / HTML
ISSN	18692044
DOI	10.1186/s13213-024-01758-7
Journal	Annals of Microbiology
Issue Number	1
Volume Number	74
Language	English
Publisher	BioMed Central
Publisher Date	2024-04-27
Access Restriction	Open
Subject Keyword	Microbiology Microbial Genetics and Genomics Microbial Ecology Mycology Applied Microbiology Coal fly ash Soil amendment Soil microbial community Land productivity enhancement Humic acid
Content Type	Text
Resource Type	Article
Subject	Applied Microbiology and Biotechnology
Journal Impact Factor	3/2023
5-Year Journal Impact Factor	3.4/2023

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