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Effects of elevated ozone on the contribution of nitrogen rhizodeposition by spring wheat to different soil N pools
Cao, Yanhong1; Shi, Yi2; Sun, Xinchao1; Lu, Caiyan2; Liu, Xueyan1
Corresponding AuthorLu, Caiyan(lucaiyan@iae.ac.cn) ; Liu, Xueyan(liuxueyan@tju.edu.cn)
2018-04-01
Source PublicationPLANT AND SOIL
ISSN0032-079X
Volume425Issue:1-2Pages:321-333
AbstractBackground 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.
KeywordOzone N rhizodeposition Split-root technique N-15 labeling Ncycling Wheat
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China
DOI10.1007/s11104-018-3592-y
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaAgriculture ; Plant Sciences
WOS SubjectAgronomy ; Plant Sciences ; Soil Science
WOS IDWOS:000430992300023
PublisherSPRINGER
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/127919
Collection中国科学院金属研究所
Corresponding AuthorLu, Caiyan; Liu, Xueyan
Affiliation1.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
Recommended Citation
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.
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