Moderate increase of precipitation stimulates CO2 production by regulating soil organic carbon in a saltmarsh
Saltmarsh is widely recognized as a blue carbon ecosystem with great carbon storage potential. Yet soil respiration with a major contributor of atmospheric CO2 can offset its carbon sink function. Up to date, mechanisms ruling CO2 emissions from saltmarsh soil remain unclear. In particular, the effe...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-01-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2024.1328965/full |
| _version_ | 1797347863223599104 |
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| author | Lirong Zhang Lirong Zhang Guangxuan Han Guangxuan Han Guangxuan Han Lifeng Zhou Lifeng Zhou Xinge Li Xinge Li Xinge Li Xiaojie Wang Xiaojie Wang Xiaojie Wang Xiaoshuai Zhang Xiaoshuai Zhang Xiaoshuai Zhang Leilei Xiao Leilei Xiao Leilei Xiao |
| author_facet | Lirong Zhang Lirong Zhang Guangxuan Han Guangxuan Han Guangxuan Han Lifeng Zhou Lifeng Zhou Xinge Li Xinge Li Xinge Li Xiaojie Wang Xiaojie Wang Xiaojie Wang Xiaoshuai Zhang Xiaoshuai Zhang Xiaoshuai Zhang Leilei Xiao Leilei Xiao Leilei Xiao |
| author_sort | Lirong Zhang |
| collection | DOAJ |
| description | Saltmarsh is widely recognized as a blue carbon ecosystem with great carbon storage potential. Yet soil respiration with a major contributor of atmospheric CO2 can offset its carbon sink function. Up to date, mechanisms ruling CO2 emissions from saltmarsh soil remain unclear. In particular, the effect of precipitation on soil CO2 emissions is unclear in coastal wetlands, due the lack of outdoor data in real situations. We conducted a 7-year field manipulation experiment in a saltmarsh in the Yellow River Delta, China. Soil respiration in five treatments (−60%, −40%, +0%, +40%, and + 60% of precipitation) was measured in the field. Topsoils from the last 3 years (2019–2021) were analyzed for CO2 production potential by microcosm experiments. Furthermore, quality and quantity of soil organic carbon and microbial function were tested. Results show that only the moderate precipitation rise of +40% induced a 66.2% increase of CO2 production potential for the microcosm experiments, whereas other data showed a weak impact. Consistently, soil respiration was also found to be strongest at +40%. The CO2 production potential is positively correlated with soil organic carbon, including carbon quantity and quality. But microbial diversity did not show any positive response to precipitation sizes. r-/K-strategy seemed to be a plausible explanation for biological factors. Overall, our finding reveal that a moderate precipitation increase, not decrease or a robust increase, in a saltmarsh is likely to improve soil organic carbon quality and quantity, and bacterial oligotroph:copiotroph ratio, ultimately leading to an enhanced CO2 production. |
| first_indexed | 2024-03-08T11:54:00Z |
| format | Article |
| id | doaj.art-090e21404de744ea8d94e834c0df6017 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-03-08T11:54:00Z |
| publishDate | 2024-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-090e21404de744ea8d94e834c0df60172024-01-24T04:49:13ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2024-01-011510.3389/fmicb.2024.13289651328965Moderate increase of precipitation stimulates CO2 production by regulating soil organic carbon in a saltmarshLirong Zhang0Lirong Zhang1Guangxuan Han2Guangxuan Han3Guangxuan Han4Lifeng Zhou5Lifeng Zhou6Xinge Li7Xinge Li8Xinge Li9Xiaojie Wang10Xiaojie Wang11Xiaojie Wang12Xiaoshuai Zhang13Xiaoshuai Zhang14Xiaoshuai Zhang15Leilei Xiao16Leilei Xiao17Leilei Xiao18CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, ChinaShandong Key Laboratory of Coastal Environmental Processes, Yantai, ChinaThe Yellow River Delta Ecological Research Station of Coastal Wetland, Chinese Academy of Sciences, Yantai, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, ChinaSchool of Geography and Environment, Liaocheng University, Liaocheng, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaThe College of Geography and Environmental Science, Henan University, Kaifeng, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, ChinaShandong Key Laboratory of Coastal Environmental Processes, Yantai, ChinaThe Yellow River Delta Ecological Research Station of Coastal Wetland, Chinese Academy of Sciences, Yantai, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, ChinaShandong Key Laboratory of Coastal Environmental Processes, Yantai, ChinaThe Yellow River Delta Ecological Research Station of Coastal Wetland, Chinese Academy of Sciences, Yantai, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, ChinaShandong Key Laboratory of Coastal Environmental Processes, Yantai, ChinaThe Yellow River Delta Ecological Research Station of Coastal Wetland, Chinese Academy of Sciences, Yantai, ChinaSaltmarsh is widely recognized as a blue carbon ecosystem with great carbon storage potential. Yet soil respiration with a major contributor of atmospheric CO2 can offset its carbon sink function. Up to date, mechanisms ruling CO2 emissions from saltmarsh soil remain unclear. In particular, the effect of precipitation on soil CO2 emissions is unclear in coastal wetlands, due the lack of outdoor data in real situations. We conducted a 7-year field manipulation experiment in a saltmarsh in the Yellow River Delta, China. Soil respiration in five treatments (−60%, −40%, +0%, +40%, and + 60% of precipitation) was measured in the field. Topsoils from the last 3 years (2019–2021) were analyzed for CO2 production potential by microcosm experiments. Furthermore, quality and quantity of soil organic carbon and microbial function were tested. Results show that only the moderate precipitation rise of +40% induced a 66.2% increase of CO2 production potential for the microcosm experiments, whereas other data showed a weak impact. Consistently, soil respiration was also found to be strongest at +40%. The CO2 production potential is positively correlated with soil organic carbon, including carbon quantity and quality. But microbial diversity did not show any positive response to precipitation sizes. r-/K-strategy seemed to be a plausible explanation for biological factors. Overall, our finding reveal that a moderate precipitation increase, not decrease or a robust increase, in a saltmarsh is likely to improve soil organic carbon quality and quantity, and bacterial oligotroph:copiotroph ratio, ultimately leading to an enhanced CO2 production.https://www.frontiersin.org/articles/10.3389/fmicb.2024.1328965/fullprecipitation changesaltmarshCO2 production potentialcarbon quantity and qualitymicrobial r-/K-strategy |
| spellingShingle | Lirong Zhang Lirong Zhang Guangxuan Han Guangxuan Han Guangxuan Han Lifeng Zhou Lifeng Zhou Xinge Li Xinge Li Xinge Li Xiaojie Wang Xiaojie Wang Xiaojie Wang Xiaoshuai Zhang Xiaoshuai Zhang Xiaoshuai Zhang Leilei Xiao Leilei Xiao Leilei Xiao Moderate increase of precipitation stimulates CO2 production by regulating soil organic carbon in a saltmarsh Frontiers in Microbiology precipitation change saltmarsh CO2 production potential carbon quantity and quality microbial r-/K-strategy |
| title | Moderate increase of precipitation stimulates CO2 production by regulating soil organic carbon in a saltmarsh |
| title_full | Moderate increase of precipitation stimulates CO2 production by regulating soil organic carbon in a saltmarsh |
| title_fullStr | Moderate increase of precipitation stimulates CO2 production by regulating soil organic carbon in a saltmarsh |
| title_full_unstemmed | Moderate increase of precipitation stimulates CO2 production by regulating soil organic carbon in a saltmarsh |
| title_short | Moderate increase of precipitation stimulates CO2 production by regulating soil organic carbon in a saltmarsh |
| title_sort | moderate increase of precipitation stimulates co2 production by regulating soil organic carbon in a saltmarsh |
| topic | precipitation change saltmarsh CO2 production potential carbon quantity and quality microbial r-/K-strategy |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2024.1328965/full |
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