Moderate increase of precipitation stimulates CO<sub>2</sub> production by regulating soil organic carbon in a saltmarsh

doi:10.3389/fmicb.2024.1328965

YIC-IR

	Moderate increase of precipitation stimulates CO₂ production by regulating soil organic carbon in a saltmarsh
	Zhang, Lirong 1,2; Han, Guangxuan1,3,4 ; Zhou, Lifeng 1,5; Li, Xinge 1,2,6; Wang, Xiaojie 1,3,4; Zhang, Xiaoshuai 1,3,4; Xiao, Leilei1,3,4
发表期刊	FRONTIERS IN MICROBIOLOGY
	2024-01-24
卷号	15 页码:8
关键词	precipitation change saltmarsh CO2 production potential carbon quantity and quality microbial r-/K-strategy
DOI	10.3389/fmicb.2024.1328965
通讯作者	Xiao, Leilei([email protected])
英文摘要	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.
资助机构	Youth Innovation Promotion Association, CAS10.13039/501100004739
收录类别	SCI
语种	英语
关键词[WOS]	DROUGHT ; RESPIRATION ; RESPONSES ; SENSITIVITY ; FOREST ; REDUCE ; MATTER
研究领域[WOS]	Microbiology
WOS记录号	WOS:001158336300001
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/34864
专题	中国科学院烟台海岸带研究所
通讯作者	Xiao, Leilei
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Shandong Key Lab Coastal Environm Proc, Yantai, Peoples R China 4.Chinese Acad Sci, Yellow River Delta Ecol Res Stn Coastal Wetland, Yantai, Peoples R China 5.Liaocheng Univ, Sch Geog & Environm, Liaocheng, Peoples R China 6.Henan Univ, Coll Geog & Environm Sci, Kaifeng, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Lirong,Han, Guangxuan,Zhou, Lifeng,et al. Moderate increase of precipitation stimulates CO₂ production by regulating soil organic carbon in a saltmarsh[J]. FRONTIERS IN MICROBIOLOGY,2024,15:8.
APA	Zhang, Lirong.,Han, Guangxuan.,Zhou, Lifeng.,Li, Xinge.,Wang, Xiaojie.,...&Xiao, Leilei.(2024).Moderate increase of precipitation stimulates CO₂ production by regulating soil organic carbon in a saltmarsh.FRONTIERS IN MICROBIOLOGY,15,8.
MLA	Zhang, Lirong,et al."Moderate increase of precipitation stimulates CO₂ production by regulating soil organic carbon in a saltmarsh".FRONTIERS IN MICROBIOLOGY 15(2024):8.