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1.	Xue, Ru, et al. (författare) Variations of methane fluxes and methane microbial community composition with soil depth in the riparian buffer zone of a sponge city park 2023 Ingår i: Journal of Environmental Management. - : Elsevier. - 0301-4797 .- 1095-8630. ; 339 Tidskriftsartikel (refereegranskat)abstract Riparian buffers benefit both natural and man-made ecosystems by preventing soil erosion, retaining soil nu-trients, and filtering pollutants. Nevertheless, the relationship between vertical methane fluxes, soil carbon, and methane microbial communities in riparian buffers remains unclear. This study examined vertical methane fluxes, soil carbon, and methane microbial communities in three different soil depths (0-5 cm, 5-10 cm, and 10-15 cm) within a riparian buffer of a Sponge City Park for one year. Structural equation model (SEM) results demonstrated that vertical methane fluxes varied with soil depths (lambda =-0.37) and were primarily regulated by methanogenic community structure (lambda = 0.78). Notably, mathematical regression results proposed that mcrA/ pmoA ratio (R2 = 0.8) and methanogenic alpha diversity/methanotrophic alpha diversity ratio (R2 = 0.8) could serve as valid predictors of vertical variation in methane fluxes in the riparian buffer of urban river. These findings suggest that vertical variation of methane fluxes in riparian buffer soils is mainly influenced by carbon inputs and methane microbial abundance and community diversity. The study's results quantitatively the relationship between methane fluxes in riparian buffer soils and abiotic and biotic factors in the vertical di-rection, therefore contributing to the further development of mathematical models of soil methane emissions.

Xue, Ru, et al. (författare)
Variations of methane fluxes and methane microbial community composition with soil depth in the riparian buffer zone of a sponge city park
2023
Ingår i: Journal of Environmental Management. - : Elsevier. - 0301-4797 .- 1095-8630. ; 339
Tidskriftsartikel (refereegranskat)abstract
- Riparian buffers benefit both natural and man-made ecosystems by preventing soil erosion, retaining soil nu-trients, and filtering pollutants. Nevertheless, the relationship between vertical methane fluxes, soil carbon, and methane microbial communities in riparian buffers remains unclear. This study examined vertical methane fluxes, soil carbon, and methane microbial communities in three different soil depths (0-5 cm, 5-10 cm, and 10-15 cm) within a riparian buffer of a Sponge City Park for one year. Structural equation model (SEM) results demonstrated that vertical methane fluxes varied with soil depths (lambda =-0.37) and were primarily regulated by methanogenic community structure (lambda = 0.78). Notably, mathematical regression results proposed that mcrA/ pmoA ratio (R2 = 0.8) and methanogenic alpha diversity/methanotrophic alpha diversity ratio (R2 = 0.8) could serve as valid predictors of vertical variation in methane fluxes in the riparian buffer of urban river. These findings suggest that vertical variation of methane fluxes in riparian buffer soils is mainly influenced by carbon inputs and methane microbial abundance and community diversity. The study's results quantitatively the relationship between methane fluxes in riparian buffer soils and abiotic and biotic factors in the vertical di-rection, therefore contributing to the further development of mathematical models of soil methane emissions.

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