Factors associated with the diversification of the microbial communities within different natural and artificial saline environments

He, Shuijian; Niu, Qigui; Li, Yu You; Nie, Yulun; Hou, Meifeng

doi:10.1016/j.ecoleng.2015.06.029

Cited by 24 publications

(2 citation statements)

References 32 publications

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“…As can be seen from the Figure 10, Proteobacteria dominated the water samples after the reaction with a relative proportion of 17.90%-85.69%. This is consistent with the fact that Proteobacteria are the most common phylum in sewage treatment (He et al, 2015;Lin et al, 2012;Wang et al, 2017).…”

Section: Analysis Of Relative Abundance Of Microorganismssupporting

confidence: 90%

Six complex microbial inoculants for removing ammonia nitrogen from waters

Sun

Zhang

et al. 2022

Water Environment Research

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To determine the effect of microbial inoculants on the removal of ammonia nitrogen (NH4+‐N), six different complex microbial inoculants were studied. In this study, their effectiveness on NH4+‐N removal was compared, and their microbial community composition was determined. High‐throughput sequencing results showed that Proteobacteria and Firmicutes were the dominant phyla in six samples. Before the reaction, Bacillus, Cyanobacteria, and Mitochondria genera were the dominant genera. The dominant genera were significantly different after the reaction with the addition of bacterial agents. The six water samples were Massilia, Escherichia‐Shigella, Brevibacillus, Mitsuaria, Bacillus, and Ralstonia. Among the six complex microbial inoculants, “Gandu nitrifying bacteria (NR4)” have the best removal effect on NH4+‐N. In addition, the removal effect of six different bacterial agents on chemical oxygen demand (COD) was compared. The results showed that “Bilaiqing ammonia nitrogen removal bacteria agent (NR5)” has the best removal effect on COD. Single‐factor experiments suggested that the optimal conditions for NR4 bacteria were pH 7, 30°C, 1.0 g/L of bacterial agent dosage and a wide range of NH4+‐N from 30 to 300 mg/L. Practitioner Points The nitrogen removal effects of six different microbial agents were compared. High‐throughput sequencing provides important insights into the study of ammonia nitrogen removal by microbial communities. Analysis of six different complex bacterial agents by high‐throughput sequencing. The relative abundance of microorganisms is not proportional to the ability to remove NH4+‐N Good application effect in urban landscape water body.

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Section: Analysis Of Relative Abundance Of Microorganismssupporting

confidence: 90%

Six complex microbial inoculants for removing ammonia nitrogen from waters

Sun

Zhang

et al. 2022

Water Environment Research

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“…Assuming that the soil is homogeneous and isotropic, solute moves completely with water, ignoring dispersion and adsorption, and water flow follows Darcy's law, an equivalent hemispheric model of point source solute for drip irrigation is proposed. It is based on Darcy's law and water continuity equation, through a series of transformations and introducing dimensionless variables, the solute continuum equation and concentration equation can be obtained [13]. A hemispheric equivalent model was used to study the solute distribution near drip irrigation point source, saturated area and root adsorption [14].…”

Section: Mathematical Model Of Salt and Alkali Transportmentioning

confidence: 99%

Saline-alkali migration in soda saline soil based on sub-soiling technology

Yuan¹,

Feng²,

Jang³

et al. 2019

Desalination and Water Treatment

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To study the saline-alkali migration law of soda saline-alkali soils based on sub-soiling technology, improve the soil quality of soda saline-alkali agricultural area, and provide scientific basis for the construction of high and stable yield fields of crops in soda saline-alkali soils. Based on the unsaturated soil water movement theory and the convection-dispersion theory of solute transport in porous media, a single-parameter and two-parameter model of saline-alkali transport was constructed to analyze the distribution of saline-alkali concentration in soil solution with the depth of soil layer. Soil samples were taken from four soda saline-alkali soils in different periods under sub-soiling tillage. The experimental data of soil saline-alkali content were obtained, and the law of saline-alkali migration was analyzed. When the depth was 60 cm, the content of saline-alkali in the soil before breaking the plough bottom was 0.4%, and the content of saline-alkali was 0.35% after breaking the plough bottom with sub-soiling technique. It can be seen that sub-soiling technique can promote saline-alkali infiltration and reduce the content of saline-alkali in the planting soil layer. The average water content of the sub-soiled soil was 23.4%, which was significantly higher than that of the subsoiled soil. The soil salinity and alkali content in 100 cm depth layer decreased by 30.8%, and that in 40 cm depth layer decreased by 57%. The salinity and alkali data in different regions showed that the soil salinity and alkali content in the soil decreased by 30.8%. Saline-alkali data from different regions show that due to sub-soiling, salt-alkali in the soil moves upward, salt-alkali in the lower part of crop roots moves outward, and salt-alkali in the soil moves away from the crop root zone; between 0 and 50 cm under the soil, the content of soil salt and alkali is from small to large, forming a desalination area of saline and alkali content; sub-soiling tillage makes 0-30 cm layer soil desalinization rate reach 83.5%, the soil salt removal rate of 0-60 cm layer reached 79.9%; The effect of sub-soiling on soil salinity is less than 1.634% of the initial value. Conclusion: sub-soiling technology can effectively reduce saline alkali content and increase crop yield in soda saline alkali soil.

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Sustainable Soil Management Practices in Olive Groves

Kavvadias

Koubouris

2019

Soil Fertility Management for Sustainable Development

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Factors associated with the diversification of the microbial communities within different natural and artificial saline environments

Cited by 24 publications

References 32 publications

Six complex microbial inoculants for removing ammonia nitrogen from waters

Six complex microbial inoculants for removing ammonia nitrogen from waters

Saline-alkali migration in soda saline soil based on sub-soiling technology

Sustainable Soil Management Practices in Olive Groves

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