The response of soil carbon mineralization losses to changes in rainfall frequency is seasonally dependent in an estuarine saltmarsh

doi:10.1016/j.soilbio.2024.109538

	The response of soil carbon mineralization losses to changes in rainfall frequency is seasonally dependent in an estuarine saltmarsh
	Li, Xue 1,2,3; Chen, Kelong 1; Zhang, Qiqi 2,3; Zhang, Xiaoshuai 2,3; Wang, Xiaojie 2,3; Zhao, Mingliang 2,3; Li, Peiguang 2,3; Xie, Baohua2,3 ; Han, Guangxuan2,3 ; Song, Weimin 2,3
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
	2024-10-01
卷号	197 页码:12
关键词	Soil CO 2 fluxCH 4 flux Rainfall frequency Rainfall timing Soil salinity Estuarine saltmarsh
DOI	10.1016/j.soilbio.2024.109538
通讯作者	Song, Weimin([email protected])
英文摘要	Altered rainfall distribution patterns resulting from climate change have substantial effects on soil carbon (C) cycling in terrestrial ecosystems particularly in water-limited regions. However, how rainfall redistribution affects soil C mineralization (CO2 and CH4 fluxes) in humid regions such as of the coastal saltmarshes remain unclear. We conducted mesocosm experiments in an estuarine saltmarsh in the Yellow River Delta of China, where we simulated three rainfall frequency scenarios (high-frequency, medium-frequency and low-frequency) with the same total rainfall amount in the dry and wet seasons, respectively. Soil CO2 and CH4 fluxes were measured before and after rain frequency treatment during a 40-day period for each season. The decrease in rainfall frequency significantly reduced the mean soil CO2 and CH4 fluxes during the dry season, but had no effect on either flux during the wet season. The seasonal variation in the response of soil C mineralization to rainfall frequency changes could be explained by the changes in antecedent soil water and salinity conditions, soil C substrate, microbial activities and diversity. Thus, the effects of changes in rainfall frequency on soil C mineralization are regulated by season, and should be considered when predicting the future C balance of coastal wetland ecosystems. Furthermore, the shift in precipitation frequency distribution towards increasing heavy rainfall events during the dry season in this region will have a great effect on soil C losses, potentially feeding back into the soil C budget and stability in this estuarine saltmarsh.
资助机构	NSFC-Shandong Union ; National Natural Science Foundation of China ; National Key Basic Research and Development Program ; Yellow River Delta Field Observation and Research Station Organization in China
收录类别	SCI
语种	英语
关键词[WOS]	ORGANIC-MATTER MINERALIZATION ; MICROBIAL COMMUNITIES ; METHANE EMISSIONS ; ENVIRONMENTAL CONTROLS ; EXTRACTION METHOD ; N-MINERALIZATION ; CLIMATE-CHANGE ; DRY SEASON ; SALINITY ; WATER
研究领域[WOS]	Agriculture
WOS记录号	WOS:001279612900001
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/35657
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室支撑部门_中国科学院黄河三角洲滨海湿地试验站
通讯作者	Song, Weimin
作者单位	1.Qinghai Normal Univ, Sch Geog Sci, Xining 810000, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Restorat, Yantai 264000, Shangdong, Peoples R China 3.Chinese Acad Sci, Yellow River Delta Field Observat & Res Stn Coasta, Dongying 257000, Shangdong, Peoples R China
推荐引用方式 GB/T 7714	Li, Xue,Chen, Kelong,Zhang, Qiqi,et al. The response of soil carbon mineralization losses to changes in rainfall frequency is seasonally dependent in an estuarine saltmarsh[J]. SOIL BIOLOGY & BIOCHEMISTRY,2024,197:12.
APA	Li, Xue.,Chen, Kelong.,Zhang, Qiqi.,Zhang, Xiaoshuai.,Wang, Xiaojie.,...&Song, Weimin.(2024).The response of soil carbon mineralization losses to changes in rainfall frequency is seasonally dependent in an estuarine saltmarsh.SOIL BIOLOGY & BIOCHEMISTRY,197,12.
MLA	Li, Xue,et al."The response of soil carbon mineralization losses to changes in rainfall frequency is seasonally dependent in an estuarine saltmarsh".SOIL BIOLOGY & BIOCHEMISTRY 197(2024):12.