Soil Bacterial Diversity and Its Relationship with Soil CO2 and Mineral Composition: A Case Study of the Laiwu Experimental Site
Open Access
- 7 August 2020
- journal article
- research article
- Published by MDPI AG in International Journal of Environmental Research and Public Health
- Vol. 17 (16), 5699
- https://doi.org/10.3390/ijerph17165699
Abstract
To better understand the characteristics of soil bacterial diversity in different environments, the Laiwu Qilongwan experimental site was selected as it is of great significance for the study of geochemical cycles. The soil CO2, mineral composition and bacterial community were analyzed by an EGM-4 portable environmental gas detector, an X-ray diffractometer and 16S rDNA high-throughput sequencing, and soil bacterial diversity and the relationship between soil bacterial diversity and environmental factors were studied. The results showed that with increasing soil depth, the CO2 content increased, the feldspar and amphibole contents increased, the quartz content decreased, the richness of the soil bacterial community increased, the relative richness of Nitrospirae increased, and Chloroflexi decreased. The dominant bacteria were Proteobacteria, Actinobacteria and Acidobacteria. There were slight differences in soil CO2, mineral composition and dominant bacterial flora at the same depth. Actinobacteria, Proteobacteria and Firmicutes were the dominant phyla of L02. The CO2 was lowest in bare land, and the quartz and K-feldspar contents were the highest. Soil CO2 mainly affected the deep bacterial diversity, while shallow soil bacteria were mainly affected by mineral components (quartz and K-feldspar). At the same depth, amphibole and clay minerals had obvious effects on the bacterial community, while CO2 had obvious effects on subdominant bacteria.Funding Information
- National Natural Science Foundation of China (41641022)
- China Geological Survey (1212012000150003)
This publication has 57 references indexed in Scilit:
- Soil purple phototrophic bacterial diversity under double cropping (rice-wheat) with free-air CO2 enrichment (FACE)European Journal of Soil Science, 2011
- Microbial biomass, and dissolved organic carbon and nitrogen strongly affect soil respiration in different land uses: A case study at Three Gorges Reservoir Area, South ChinaAgriculture, Ecosystems & Environment, 2010
- Responses of vegetation and soil microbial communities to warming and simulated herbivory in a subarctic heathJournal of Ecology, 2009
- CO2 efflux from Amazonian headwater streams represents a significant fate for deep soil respirationGeophysical Research Letters, 2008
- Effect of the Mycorrhizosphere on the Genotypic and Metabolic Diversity of the Bacterial Communities Involved in Mineral Weathering in a Forest SoilApplied and Environmental Microbiology, 2007
- Soil organic matter turnover as a function of the soil clay content: consequences for model applicationsSoil Biology and Biochemistry, 2004
- Soil organic matter turnover as a function of the soil clay content: consequences for model applicationsSoil Biology and Biochemistry, 2004
- Microbial diversity and soil functionsEuropean Journal of Soil Science, 2003
- DNA fingerprinting reveals links among agricultural crops, soil properties, and the composition of soil microbial communitiesGeoderma, 2003
- Quantification of transient CO2 production in a sandy unsaturated zoneWater Resources Research, 1999