Methane Anaerobic Oxidation Potential and Microbial Community Response to Sulfate Input in Coastal Wetlands of the Yellow River Delta

Jun Li, Qingfeng Chen, Xinghua Wang, Yu Tan, Luzhen Li, Bowei Zhang, Beibei Guo and Changsheng Zhao ()
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Jun Li: Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Qingfeng Chen: College of Geography and Environment, Shandong Normal University, Jinan 250300, China
Xinghua Wang: Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Yu Tan: Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Luzhen Li: Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Bowei Zhang: Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Beibei Guo: Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Changsheng Zhao: Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China

Sustainability, 2023, vol. 15, issue 9, 1-17

Abstract: In the context of global warming and carbon neutrality, reducing greenhouse gas emissions is fundamental to achieving sustainable development. As an important greenhouse gas, methane has a much stronger warming effect than CO 2 , and studies have demonstrated that anaerobic oxidation of methane (AOM) is important for global methane emissions. This paper systematically investigated the AOM potential and microbial community response to the input of SO 4 2− in the three typical salt marsh soils of the Yellow River Delta: Reed , Suaeda salsa , and Tamarisk , using SO 4 2− as the electron acceptor and a combination of indoor anaerobic culture and high-throughput sequencing. The results showed that after adding an appropriate concentration of SO 4 2− , the AOM potential was significantly promoted in Tamarix soil ( p < 0.05) and significantly inhibited in Reed and Suaeda salsa soil ( p < 0.05); soil AOM potential and SO 4 2− input concentration and background values were correlated. At the microbial level, SO 4 2− input affected the abundance of some microorganisms. At the phylum level, the relative abundance of Proteobacteria was increased in Suaeda salsa soil , decreased in Tamarisk soil, and did not change significantly in Reed soil; that of Crenarchaeota and Desulfobacterota was significantly increased in Tamarisk soil. At the genus level, Methylophaga , Methylotenera, and Methylomonaceae became the dominant populations, and it can be inferred that these bacteria are involved in the anaerobic oxidation of methane after the input of SO 4 2− . This study will be of great significance to the mechanistic study of AOM and the conservation of microbial diversity in the Yellow River Delta Coastal Wetland, as well as provide a scientific basis for CH 4 reduction in coastal wetlands.

Keywords: Yellow River Delta wetlands; sulfate; microorganisms; greenhouse gas; carbon reduction; anaerobic oxidation of sulfate reduced methane (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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