干旱区生态环境知识资源中心(Arid): Plant functional types regulate non-additive responses of soil respiration to 5-year warming and nitrogen addition in a semi-arid grassland

Arid

DOI	10.1111/1365-2435.13902
	Plant functional types regulate non-additive responses of soil respiration to 5-year warming and nitrogen addition in a semi-arid grassland
	Song, Jian; Xia, Jianyang; Hui, Dafeng; Zheng, Mengmei; Wang, Jing; Ru, Jingyi; Wang, Haidao; Zhang, Qingshan; Yang, Chao; Wan, Shiqiang
通讯作者	Wan, SQ (corresponding author), Hebei Univ, Sch Life Sci, Inst Life Sci & Green Dev, Baoding, Peoples R China.
来源期刊	FUNCTIONAL ECOLOGY
ISSN	0269-8463
EISSN	1365-2435
出版年	2021-08
英文摘要	How climate warming interacts with atmospheric nitrogen (N) deposition to affect carbon (C) release from soils remains largely elusive, posing a major challenge in projecting climate change-terrestrial C feedback. As part of a 5-year (2006-2010) field manipulative experiment, this study was designed to examine the effects of 24-hr continuous warming and N addition on soil respiration and explore the underlying mechanisms in a semi-arid grassland on the Mongolian Plateau, China. Across the 5 years and all plots, soil respiration was not changed under the continuous warming, but was decreased by 3.7% under the N addition. The suppression of soil respiration by N addition in the third year and later could be mainly due to the reductions in the forb-to-grass biomass ratios. Moreover, there were interactive effects between continuous warming and N addition on soil respiration. Continuous warming increased soil respiration by 5.8% in the ambient N plots, but reduced it by 6.3% in the enriched N plots. Soil respiration was unaffected by N addition in the ambient temperature plots yet decreased by 9.4% in the elevated temperature plots. Changes of soil moisture and the proportion of legume biomass in the community might be primarily responsible for the non-additive effects of continuous warming and N addition on soil respiration. This study provides empirical evidence for the positive climate warming-soil C feedback in the ambient N condition. However, N deposition reverses the positive warming-soil C feedback into a negative feedback, leading to decreased C loss from soils under a warming climate. Incorporating our findings into C-cycling models could reduce the uncertainties of model projections for land C sink and global C cycling under multifactorial global change scenarios. A free Plain Language Summary can be found within the Supporting Information of this article.
英文关键词	carbon cycling climate warming community composition global change nitrogen deposition plant productivity water availability
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000687660200001
WOS关键词	ECOSYSTEM CARBON EXCHANGE ; LITTER DECOMPOSITION ; DEPOSITION ; CO2 ; AVAILABILITY ; BIODIVERSITY ; DIVERSITY ; WATER
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367559
作者单位	[Song, Jian; Wang, Jing; Ru, Jingyi; Wang, Haidao; Zhang, Qingshan; Yang, Chao; Wan, Shiqiang] Hebei Univ, Sch Life Sci, Inst Life Sci & Green Dev, Baoding, Peoples R China; [Xia, Jianyang] East China Normal Univ, Zhejiang Tiantong Forest Ecosyst Natl Observat &, Shanghai Key Lab Urban Ecol Proc & Ecorestorat, Sch Ecol & Environm Sci, Shanghai, Peoples R China; [Xia, Jianyang] East China Normal Univ, Res Ctr Global Change & Ecol Forecasting, Shanghai, Peoples R China; [Hui, Dafeng] Tennessee State Univ, Dept Biol Sci, Nashville, TN 37203 USA; [Zheng, Mengmei] Henan Normal Univ, Coll Life Sci, Xinxiang, Peoples R China
推荐引用方式 GB/T 7714	Song, Jian,Xia, Jianyang,Hui, Dafeng,et al. Plant functional types regulate non-additive responses of soil respiration to 5-year warming and nitrogen addition in a semi-arid grassland[J],2021.
APA	Song, Jian.,Xia, Jianyang.,Hui, Dafeng.,Zheng, Mengmei.,Wang, Jing.,...&Wan, Shiqiang.(2021).Plant functional types regulate non-additive responses of soil respiration to 5-year warming and nitrogen addition in a semi-arid grassland.FUNCTIONAL ECOLOGY.
MLA	Song, Jian,et al."Plant functional types regulate non-additive responses of soil respiration to 5-year warming and nitrogen addition in a semi-arid grassland".FUNCTIONAL ECOLOGY (2021).