Ambient precipitation determines the sensitivity of soil respiration to precipitation treatments in a marsh

doi:10.1111/gcb.16581

	Ambient precipitation determines the sensitivity of soil respiration to precipitation treatments in a marsh
	Li, Xinge 1,2,3,4; Hou, Yalin 5; Chu, Xiaojing 1,2,4; Zhao, Mingliang 1,2,4; Wei, Siyu 1,2,3; Song, Weimin 1,2,4; Li, Peiguang 1,2,4; Wang, Xiaojie 1,2,4; Han, Guangxuan1,2,4,6
发表期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
	2023-02-07
页码	12
关键词	ambient precipitation field manipulation experiment marshes precipitation treatments sensitivity soil respiration
DOI	10.1111/gcb.16581
通讯作者	Han, Guangxuan(gxhan@yic.ac.cn)
英文摘要	The effects in field manipulation experiments are strongly influenced by amplified interannual variation in ambient climate as the experimental duration increases. Soil respiration (SR), as an important part of the carbon cycle in terrestrial ecosystems, is sensitive to climate changes such as temperature and precipitation changes. A growing body of evidence has indicated that ambient climate affects the temperature sensitivity of SR, which benchmarks the strength of terrestrial soil carbon-climate feedbacks. However, whether SR sensitivity to precipitation changes is influenced by ambient climate is still not clear. In addition, the mechanism driving the above phenomenon is still poorly understood. Here, a long-term field manipulation experiment with five precipitation treatments (-60%, -40%, +0%, +40%, and +60% of annual precipitation) was conducted in a marsh in the Yellow River Delta, China, which is sensitive to soil drying-wetting cycle caused by precipitation changes. Results showed that SR increased exponentially along the experimental precipitation gradient each year and the sensitivity of SR (standardized by per 100 mm change in precipitation under precipitation treatments) exhibited significant interannual variation from 2016 to 2021. In addition, temperature, net radiation, and ambient precipitation all exhibited dramatic interannual variability; however, only ambient precipitation had a significant negative correlation with SR sensitivity. Moreover, the sensitivity of SR was significantly positively related to the sensitivity of belowground biomass (BGB) across 6 years. Structural equation modeling and regression analysis also showed that precipitation treatments significantly affected SR and its autotrophic and heterotrophic components by altering BGB. Our study demonstrated that ambient precipitation determines the sensitivity of SR to precipitation treatments in marshes. The findings underscore the importance of ambient climate in regulating ecosystem responses in long-term field manipulation experiments.
资助机构	Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; International Science Partnership Program of the Chinese Academy of Sciences ; Yellow River Delta Ecological Research Station of Coastal Wetland ; Chinese Academy of Sciences
收录类别	SCI
语种	英语
关键词[WOS]	PHENOLOGICAL RESPONSES ; MICROBIAL COMMUNITY ; COASTAL WETLAND ; ORGANIC-CARBON ; CLIMATE-CHANGE ; TEMPERATE ; WATER ; COMPONENTS ; RAINFALL ; DROUGHT
研究领域[WOS]	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS记录号	WOS:000928685700001
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/32643
专题	中国科学院海岸带环境过程与生态修复重点实验室支撑部门_中国科学院黄河三角洲滨海湿地试验站
通讯作者	Han, Guangxuan
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.Shandong Key Lab Coastal Environm Proc, Yantai, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Yellow River Delta Ecol Res Stn Coastal Wetland, Yantai, Peoples R China 5.Henan Univ, Coll Geog & Environm Sci, Kaifeng, Peoples R China 6.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Li, Xinge,Hou, Yalin,Chu, Xiaojing,et al. Ambient precipitation determines the sensitivity of soil respiration to precipitation treatments in a marsh[J]. GLOBAL CHANGE BIOLOGY,2023:12.
APA	Li, Xinge.,Hou, Yalin.,Chu, Xiaojing.,Zhao, Mingliang.,Wei, Siyu.,...&Han, Guangxuan.(2023).Ambient precipitation determines the sensitivity of soil respiration to precipitation treatments in a marsh.GLOBAL CHANGE BIOLOGY,12.
MLA	Li, Xinge,et al."Ambient precipitation determines the sensitivity of soil respiration to precipitation treatments in a marsh".GLOBAL CHANGE BIOLOGY (2023):12.