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DOI	10.1016/j.agee.2021.107328
	Nitrate Delta O-17 tracer method for determining gross nitrification rates
	Wang, Fan; Werayawarangura, Woradee; Riha, Krystin; Raimann, Sam; Gosney, Michael J.; Mickelbart, Michael V.; Michalski, Greg
通讯作者	Michalski, G (corresponding author), Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA. ; Mickelbart, MV (corresponding author), Purdue Univ, Dept Hort & Landscape Architecture, W Lafayette, IN 47907 USA.
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
EISSN	1873-2305
出版年	2021
卷号	312
英文摘要	Gross nitrification rate (GNR) can reflect the actual status of nitrification process but is difficult to constrain. To develop a practical method for assessing GNR, Delta O-17-NO3- tracers were applied to container systems under greenhouse conditions to test their feasibility. Two treatments with double- ((NO3-)-N-15-O-Delta 17, negative Delta O-17 value) or single-labeled ((NO3-)-O-Delta 17, positive Delta O-17 value) fertilizer nitrate salts were implemented to constrain nitrification fractions and GNRs in soilless media container systems. The nitrification fractions calculated from the Delta O-17-NO3- tracer method concurred with those from the (NO3-)-N-15 tracer method, with small deviations and a linear regression slope close to 1. This suggested the Delta O-17-NO3- tracer inherently works in the same way as the well-established (NO3-)-N-15 tracer. GNRs in the soilless media container systems ranged from 250.5(+/- 39.1) to 861.5(+/- 275.6) mg N/(m(2).d), generally higher than in natural ecosystems. The discrepancies in GNRs between the two treatments were generally smaller than discrepancies in GNRs between replicate container systems, indicating the applicability of either negatively-labeled or positively-labeled Delta O-17-NO3 tracers. Commercial nitrate salts mined from the Atacama and Kumtag Deserts are proposed for use as Delta O-17-NO3- tracers for GNR estimation due to their abundant availability, low cost and distinct discrimination from nitrified NO3-.
英文关键词	Nitrate O-17 anomaly Gross nitrification rate Mass-independent isotopic fractionation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000632877300003
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349357
作者单位	[Wang, Fan] Sun Yat sen Univ, Sch Atmospher Sci, Guangdong Prov Key Lab Climate Change & Nat Disas, Zhuhai 519082, Guangdong, Peoples R China; [Wang, Fan; Riha, Krystin; Raimann, Sam; Michalski, Greg] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA; [Werayawarangura, Woradee; Raimann, Sam; Gosney, Michael J.; Mickelbart, Michael V.] Purdue Univ, Dept Hort & Landscape Architecture, W Lafayette, IN 47907 USA; [Michalski, Greg] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA; [Wang, Fan] Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Fan,Werayawarangura, Woradee,Riha, Krystin,et al. Nitrate Delta O-17 tracer method for determining gross nitrification rates[J],2021,312.
APA	Wang, Fan.,Werayawarangura, Woradee.,Riha, Krystin.,Raimann, Sam.,Gosney, Michael J..,...&Michalski, Greg.(2021).Nitrate Delta O-17 tracer method for determining gross nitrification rates.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,312.
MLA	Wang, Fan,et al."Nitrate Delta O-17 tracer method for determining gross nitrification rates".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 312(2021).