干旱区生态环境知识资源中心(Arid): Climatic warming enhances soil respiration resilience in an arid ecosystem

Arid

DOI	10.1016/j.scitotenv.2020.144005
	Climatic warming enhances soil respiration resilience in an arid ecosystem
	Yu, Hongying; Liu, Xiaodi; Ma, Quanhui; Yin, Zuotian; Wang, Yuhui; Xu, Zhenzhu; Zhou, Guangsheng
通讯作者	Zhou, GS (corresponding author), Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China. ; Wang, YH ; Xu, ZZ (corresponding author), Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	756
英文摘要	Precipitation plays a vital role in maintaining desert ecosystems in which rain events after drought cause soil respiration (R-s) pulses. However, this process and its underlying mechanism remain ambiguous, particularly under climatic warming conditions. This study aims to determine the magnitude and drivers of R-s resilience to rewetting. We conducted a warming experiment in situ in a desert steppe with three climatic warming scenarios-ambient temperature as the control, long-term and moderate warming treatment, and short-term and acute warming treatment. Our findings showed that the average R-s over the measurement period in the control, moderate and acute warming plots were 0.51, 0.30 and 0.30 mu mol . CO2 . m(-2) . s(-1), respectively, and significantly increased to 1.72, 1.41 and 1.72 mu mol . CO2 . m(-2) . s(-1), respectively, after rewetting. Both microbial and root respiration substantially increased by rewetting: microbial respiration contributed more than root respiration to total R-s. The R-s significantly increased with microbial biomass carbon and soil organic carbon (SOC) contents. The R-s increase by rewetting might be due to the greater microbial respiration relying heavily on microbial biomass and the larger amount of available SOC after rewetting. A trackable pattern of R-s resilience changes occurred during the daytime. The resilience of R-s in acute warming plots was significantly higher than those in both moderate warming and no warming plots, indicating that R-s resilience might be enhanced with drought severity induced by climatic warming. These results suggest that climatic warming treatment would enhance the drought resilience of soil carbon effluxes following rewatering in arid ecosystems, consequently accelerating the positive feedback of climate change. Therefore, this information should be included in carbon cycle models to accurately assess ecosystem carbon budgets with future climate change scenarios in terrestrial ecosystems, particularly in arid areas. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Soil respiration Resilience Drought Rewetting Climatic warming Desert steppe
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000603487500095
WOS关键词	PRECIPITATION PULSES ; INFRARED HEATER ; DESERT STEPPE ; HETEROTROPHIC RESPIRATION ; TEMPERATURE SENSITIVITY ; MICROBIAL COMMUNITIES ; LONG-TERM ; RESPONSES ; CARBON ; GRASSLAND
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院植物研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348159
作者单位	[Yu, Hongying; Zhou, Guangsheng] Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China; [Liu, Xiaodi; Ma, Quanhui; Yin, Zuotian; Wang, Yuhui; Xu, Zhenzhu] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China; [Liu, Xiaodi; Ma, Quanhui; Yin, Zuotian] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yu, Hongying,Liu, Xiaodi,Ma, Quanhui,et al. Climatic warming enhances soil respiration resilience in an arid ecosystem[J]. 中国科学院植物研究所,2021,756.
APA	Yu, Hongying.,Liu, Xiaodi.,Ma, Quanhui.,Yin, Zuotian.,Wang, Yuhui.,...&Zhou, Guangsheng.(2021).Climatic warming enhances soil respiration resilience in an arid ecosystem.SCIENCE OF THE TOTAL ENVIRONMENT,756.
MLA	Yu, Hongying,et al."Climatic warming enhances soil respiration resilience in an arid ecosystem".SCIENCE OF THE TOTAL ENVIRONMENT 756(2021).