Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effects of Drying and Rewetting Cycles on Carbon Dioxide Emissions and Soil Microbial Communities
Extreme rainfall and drought events attributed to climate change are anticipated to occur in the current century, resulting in frequent drying and rewetting cycles (DWCs) in soils, which will, in turn, influence soil properties and microorganisms. Sample plots of Sophora japonica, Pinus tabulaeformis, and Ginkgo biloba were selected, and undisturbed soil columns were collected. CK was the constant drying treatment; the precipitation intensities of R80, R40, and R20 were 80 mm, 40 mm, and 20 mm, respectively, and the total precipitation for the four treatments was 160 mm. Significant differences were observed in the cumulative CO2 emissions among the various DWC frequencies for the same woodland soils. A significant correlation was observed between the Birch effect and the DWC frequencies of the three woodland soils. A Pearson’s correlation analysis revealed that background nutrient contents were the key factors influencing alpha diversity. In conclusion, DWCs generally increased CO2 fluxes, cumulative CO2 emissions, and the Birch effect in addition to decreasing the alpha diversity of soil microorganisms when compared to those in the constant drying treatment.
Effects of Drying and Rewetting Cycles on Carbon Dioxide Emissions and Soil Microbial Communities
Extreme rainfall and drought events attributed to climate change are anticipated to occur in the current century, resulting in frequent drying and rewetting cycles (DWCs) in soils, which will, in turn, influence soil properties and microorganisms. Sample plots of Sophora japonica, Pinus tabulaeformis, and Ginkgo biloba were selected, and undisturbed soil columns were collected. CK was the constant drying treatment; the precipitation intensities of R80, R40, and R20 were 80 mm, 40 mm, and 20 mm, respectively, and the total precipitation for the four treatments was 160 mm. Significant differences were observed in the cumulative CO2 emissions among the various DWC frequencies for the same woodland soils. A significant correlation was observed between the Birch effect and the DWC frequencies of the three woodland soils. A Pearson’s correlation analysis revealed that background nutrient contents were the key factors influencing alpha diversity. In conclusion, DWCs generally increased CO2 fluxes, cumulative CO2 emissions, and the Birch effect in addition to decreasing the alpha diversity of soil microorganisms when compared to those in the constant drying treatment.
Effects of Drying and Rewetting Cycles on Carbon Dioxide Emissions and Soil Microbial Communities
Yun Zhang (Autor:in) / Xiaohan Li (Autor:in) / Xinmei Liu (Autor:in) / Yufei Cui (Autor:in) / Ye Zhang (Autor:in) / Xiaoying Zheng (Autor:in) / Weiwei Zhang (Autor:in) / Yue Fan (Autor:in) / Junliang Zou (Autor:in)
2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Metadata by DOAJ is licensed under CC BY-SA 1.0
Effects of Drying-Rewetting Cycles on Ferrous Iron-Involved Denitrification in Paddy Soils
| DOAJ | 2021
Drying-Rewetting Effects on Soil Nitrogen and Enzyme Activities Dynamics
| British Library Conference Proceedings | 2013
| British Library Online Contents | 2018
THIN-LAYER DRYING AND REWETTING CHARACTERISTICS OF BUCKWHEAT
| British Library Online Contents | 2004