Litter carbon and nutrient chemistry control the magnitude of soil priming effect

doi:10.1111/1365-2435.13278

IMR OpenIR

	Litter carbon and nutrient chemistry control the magnitude of soil priming effect
	Chao, Lin 1,2; Liu, Yanyan 3; Freschet, Gregoire T.4; Zhang, Weidong 1,5; Yu, Xin 1,2; Zheng, Wenhui 1,2; Guan, Xin 1,5; Yang, Qingpeng 1,5; Chen, Longchi 1,5; Dijkstra, Feike A.6; Wang, Silong 1,5
通讯作者	Zhang, Weidong(wdzhang@iae.ac.cn) ; Wang, Silong(slwang@iae.ac.cn)
	2019-05-01
发表期刊	FUNCTIONAL ECOLOGY
ISSN	0269-8463
卷号	33 期号:5 页码:876-888
摘要	Plant litter inputs can promote the decomposition of soil organic matter (OM) through the priming effect (PE). However, whereas leaf litter chemistry has long been identified as the primary driver of litter decomposition within biomes world-wide, little is known about how litter chemical traits influence the occurrence and strength of the PE. Here, we studied the effects of 15 co-occurring C-3 leaf litters of contrasting chemistry on C-4 soil respiration by analysing changes in C-13 natural abundance during early and later stages of litter decomposition (up to 125days). Besides an apparent PE of 16% in the first 3days, soil C respiration was increased by 24% on average with leaf litter addition in the initial stage of decomposition (4-26days) and by 8% at later stages (27-125days). Most interestingly, soil PE related well to initial litter chemistry and the dominant factors influencing the magnitude of the PE changed with decomposition stage. In the early stage of decomposition, litter leachate C content and litter hemicellulose concentration were positively correlated with the strength of the PE, whereas tannin concentration was negatively associated with soil PE. Together, tannin and hemicellulose explained half of the observed variation in the PE (R-2=0.58). In the later phase of decomposition, lignin and lignin:N ratios were negatively related to the PE, whereas Ca, K and Mg concentrations were positively related to the PE; lignin alone gave the best prediction of the PE (R-2=0.58) at later decomposition stages. Our findings provide evidence that the magnitude and direction of the PE is influenced by the chemistry of OM inputs and suggest that, as decomposition proceeds differently among litter of contrasting chemistry, litters can also have variable effect on soil PE through time. The predictive power of litter chemical traits on soil PE opens new perspectives for improving our mechanistic understanding of soil PE and improving our abilities to model soil C dynamics at variable scales. A plain language summary is available for this article.
关键词	C-13 natural abundance C-4 soil carbon mineralization litter chemistry litter decomposition soil organic carbon soil priming effect
资助者	key research program of Frontier Sciences of the Chinese Academy of Sciences ; National Key Research and Development Program of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Talent Exchange and Cooperation Foundation of the Key Laboratory of Forest Ecology and Management of the Chinese Academy of Sciences
DOI	10.1111/1365-2435.13278
收录类别	SCI
语种	英语
资助项目	key research program of Frontier Sciences of the Chinese Academy of Sciences[QYZDB-SSW-DQC002-03] ; National Key Research and Development Program of China[2016YFA060080203] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017239] ; National Natural Science Foundation of China[41630755] ; Youth Talent Exchange and Cooperation Foundation of the Key Laboratory of Forest Ecology and Management of the Chinese Academy of Sciences
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000471332200012
出版者	WILEY
引用统计	被引频次：61[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/134238
专题	中国科学院金属研究所
通讯作者	Zhang, Weidong; Wang, Silong
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Guangxi Teachers Educ Univ, Minist Educ, Key Lab Environm Change & Resources Use Beibu Gul, Nanning, Peoples R China 4.Univ Paul Valery Montpellier, Univ Montpellier, CNRS, Ctr Ecol Fonct & Evolut,EPHE,IRD, Montpellier, France 5.Chinese Acad Sci, Huitong Expt Stn Forest Ecol, Huitong, Peoples R China 6.Univ Sydney, Sch Life & Environm Sci, Sydney Inst Agr, Camden, NSW, Australia
推荐引用方式 GB/T 7714	Chao, Lin,Liu, Yanyan,Freschet, Gregoire T.,et al. Litter carbon and nutrient chemistry control the magnitude of soil priming effect[J]. FUNCTIONAL ECOLOGY,2019,33(5):876-888.
APA	Chao, Lin.,Liu, Yanyan.,Freschet, Gregoire T..,Zhang, Weidong.,Yu, Xin.,...&Wang, Silong.(2019).Litter carbon and nutrient chemistry control the magnitude of soil priming effect.FUNCTIONAL ECOLOGY,33(5),876-888.
MLA	Chao, Lin,et al."Litter carbon and nutrient chemistry control the magnitude of soil priming effect".FUNCTIONAL ECOLOGY 33.5(2019):876-888.