Nitrogen deposition effect on forest litter decomposition is interactively regulated by endogenous litter quality and exogenous resource supply

doi:10.1007/s11104-019-04006-z

	Nitrogen deposition effect on forest litter decomposition is interactively regulated by endogenous litter quality and exogenous resource supply
	Chen, Fu-Sheng 1,2; Wang, G. Geoff 1,3; Fang, Xiang-Min 1; Wan, Song-Ze 1; Zhang, Yang 2; Liang, Chao 4
刊名	PLANT AND SOIL
	2019-04-01
卷号	437 期号:1-2 页码:413-426
关键词	Ecological stoichiometry Enzyme activity Isotope N-15 tracing method Microbial composition Nitrogen deposition Litter decomposition
ISSN号	0032-079X
DOI	10.1007/s11104-019-04006-z
英文摘要	Background and aimsAtmospheric nitrogen (N) deposition affects litter decomposition. However, how endogenous litter quality and exogenous resource supply alter the N deposition effect on litter decomposition and deposited N immobilized by microbes remains unclear.MethodsWe conducted a laboratory experiment to examine how the N deposition effect on litter decomposition varies with endogenous litter quality (needle litter with higher C/nutrients, low quality litter versus leaf litter with low C/nutrients, high quality litter) and exogenous resource supply (five treatments: N addition alone; N plus non-N nutrient and/or carbon addition; control) using a N-15 tracing method.ResultsNitrogen deposition increased the % mass and % N remaining across the decomposition process. Adding non-N nutrients increased the N deposition effect on % mass and % N remaining in the decomposing high quality litter but not in the low quality litter. Moreover, the % P remaining was increased in the low quality litter but was decreased in the high quality litter under N deposition. However, adding N and non-N nutrients together increased the % P remaining in both decomposing litters. The immobilized exogenous N-15 abundance (IEN) was much higher in the decomposing low quality litter than high quality litter. For low quality litter, resource addition treatments affected IEN, but their effects depended on decomposition stages. For high quality litter, carbon addition alone generally increased IEN across the 720days.ConclusionsNitrogen deposition effect on litter decomposition could be altered by exogenous resource supply, but the pattern ultimately depended on endogenous litter quality. Nitrogen deposition generally suppressed the litter decomposition and non-N nutrients addition enhanced the inhibition effects of N deposition on litter decomposition, especially of high quality litter, while lower quality litter tended to immobilize more exogenous deposited N. Thus, the magnitude of both non-N nutrient availability and litter quality needs to be taken into consideration when assessing the effects of N deposition on litter decomposition.
资助项目	National Natural Science Foundation of China[31730014] ; National Natural Science Foundation of China[31360179] ; Jiangxi Provincial Department of Science and Technology[20181ACH80006] ; Jiangxi Provincial Department of Science and Technology[20165BCB19006] ; CAS Interdisciplinary Innovation Team
WOS研究方向	Agriculture ; Plant Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000463608700027
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/124015]
专题	中国科学院沈阳应用生态研究所
通讯作者	Chen, Fu-Sheng; Wang, G. Geoff
作者单位	1.Jiangxi Agr Univ, Jiangxi Prov Key Lab Silviculture, Ganjiang New Area, 1101 Zhiminda Rd, Nanchang 330045, Jiangxi, Peoples R China 2.Jiangxi Agr Univ, Key Lab State Forestry Adm Forest Ecosyst Protect, Nanchang 330045, Jiangxi, Peoples R China 3.Clemson Univ, Dept Forestry & Environm Conservat, Clemson, SC 29634 USA 4.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110015, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Chen, Fu-Sheng,Wang, G. Geoff,Fang, Xiang-Min,et al. Nitrogen deposition effect on forest litter decomposition is interactively regulated by endogenous litter quality and exogenous resource supply[J]. PLANT AND SOIL,2019,437(1-2):413-426.
APA	Chen, Fu-Sheng,Wang, G. Geoff,Fang, Xiang-Min,Wan, Song-Ze,Zhang, Yang,&Liang, Chao.(2019).Nitrogen deposition effect on forest litter decomposition is interactively regulated by endogenous litter quality and exogenous resource supply.PLANT AND SOIL,437(1-2),413-426.
MLA	Chen, Fu-Sheng,et al."Nitrogen deposition effect on forest litter decomposition is interactively regulated by endogenous litter quality and exogenous resource supply".PLANT AND SOIL 437.1-2(2019):413-426.