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The dependent correlation between soil multifunctionality and bacterial community across different farmland soils
Jing Liu1, Zafran Gul Wazir1, Guo-Qin Hou1
1School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China.
Frontiers in Microbiology
|May 1, 2023
Summary
Soil bacterial richness, not diversity, significantly impacts soil enzyme activities and potential nitrification rate (PNR). Nutrient availability, particularly nitrogen and phosphorus, drives these bacterial community changes, influencing soil biogeochemical cycles.
Area of Science:
- Soil microbiology
- Biogeochemistry
- Ecology
Background:
- Soil microorganisms are crucial for biogeochemical cycles.
- The influence of microbial community structure versus diversity on soil functions is debated.
Purpose of the Study:
- Investigate bacterial community structure variations across diverse Chinese farmland soils.
- Correlate bacterial community traits with soil multifunctionality.
Main Methods:
- High-throughput sequencing of 16S rRNA genes for bacterial community analysis.
- Multivariate statistical analyses to assess soil properties, microbial communities, and functions.
Main Results:
- Bacterial community composition showed similarity across soils, but richness was key for differentiation.
- Soil enzyme activities and potential nitrification rate (PNR) were strongly linked to bacterial richness and composition.
- Bacterial richness and composition were primarily shaped by soil nutrient availability (N and P) and edaphic factors.
Conclusions:
- Soil enzyme activities and PNR depend on bacterial composition and richness, not diversity.
- Soil nutrient availability significantly modifies bacterial communities, impacting nutrient cycling.
- Future fertilization strategies should consider effects on bacterial communities for soil nutrient management.
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