Effects of elevated ozone on the contribution of nitrogen rhizodeposition by spring wheat to different soil N pools

doi:10.1007/s11104-018-3592-y

IMR OpenIR

	Effects of elevated ozone on the contribution of nitrogen rhizodeposition by spring wheat to different soil N pools
	Cao, Yanhong 1; Shi, Yi 2; Sun, Xinchao 1; Lu, Caiyan 2; Liu, Xueyan 1
通讯作者	Lu, Caiyan(lucaiyan@iae.ac.cn) ; Liu, Xueyan(liuxueyan@tju.edu.cn)
	2018-04-01
发表期刊	PLANT AND SOIL
ISSN	0032-079X
卷号	425 期号:1-2 页码:321-333
摘要	Background and aims Elevated ozone (O-3) decreases nitrogen derived from rhizodeposition (NdfR). However, the changes in the partitioning of NdfR in soil N pools due to O-3 remain unclear. The aims of this study were to investigate the contribution of NdfR to different soil N pools and its response to elevated O-3 conditions. Methods Spring wheat was labeled with N-15-urea using a split-root technique under ambient (similar to 40 ppb) and elevated O-3 treatments (60 +/- 5 ppb and 110 +/- 5 ppb) in open-top chambers. Mineral-N, microbial biomass (MB)-N and fixed ammonium (FA)-N in rhizospheric soils were analyzed. Results N rhizodeposition contributed 12-33% of mineral N, 10-14% of FA-N and 6-16% of MB-N under ambient O-3. Elevated O-3 significantly decreased mineral-(15)NdfR and increased FA-(15)NdfR but had no significant influence on MB-(15)NdfR. The decrease in mineral-NdfR was likely due to the decrease in rhizodeposition inputs and the increase in FA-NdfR. Conclusions Our results showed that elevated O-3 altered the contribution of NdfR to soil N pools. The present study increases our understanding of the dynamics of NdfR and the changes in soil N cycling induced by projected future O-3 levels.
关键词	Ozone N rhizodeposition Split-root technique N-15 labeling Ncycling Wheat
资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China
DOI	10.1007/s11104-018-3592-y
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41730855] ; National Natural Science Foundation of China[41703005] ; National Natural Science Foundation of China[41671290] ; National Key Research and Development Program of China[2016YFD0800103]
WOS研究方向	Agriculture ; Plant Sciences
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS记录号	WOS:000430992300023
出版者	SPRINGER
引用统计	被引频次：5[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/321006/127919
专题	中国科学院金属研究所
通讯作者	Lu, Caiyan; Liu, Xueyan
作者单位	1.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Key Lab Pollut Ecol & Environm Engn, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Cao, Yanhong,Shi, Yi,Sun, Xinchao,et al. Effects of elevated ozone on the contribution of nitrogen rhizodeposition by spring wheat to different soil N pools[J]. PLANT AND SOIL,2018,425(1-2):321-333.
APA	Cao, Yanhong,Shi, Yi,Sun, Xinchao,Lu, Caiyan,&Liu, Xueyan.(2018).Effects of elevated ozone on the contribution of nitrogen rhizodeposition by spring wheat to different soil N pools.PLANT AND SOIL,425(1-2),321-333.
MLA	Cao, Yanhong,et al."Effects of elevated ozone on the contribution of nitrogen rhizodeposition by spring wheat to different soil N pools".PLANT AND SOIL 425.1-2(2018):321-333.