气候变化领域集成服务门户(CCPortal): Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe

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DOI	10.1002/ece3.8196
	Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe
	Yang, Yang; Xiao, Yuanming; Li, Changbin; Wang, Bo; Gao, Yongheng; Zhou, Guoying
通讯作者	Zhou, GY (通讯作者)，Chinese Acad Sci, Northwest Inst Plateau Biol, 23 Xinning Rd, Xining 810008, Qinghai, Peoples R China.
发表日期	2021
ISSN	2045-7758
起始页码	15153
结束页码	15163
卷号	11 期号:21
英文摘要	Anthropogenic-driven global change, including changes in atmospheric nitrogen (N) deposition and precipitation patterns, is dramatically altering N cycling in soil. How long-term N deposition, precipitation changes, and their interaction influence nitrous oxide (N2O) emissions remains unknown, especially in the alpine steppes of the Qinghai-Tibetan Plateau (QTP). To fill this knowledge gap, a platform of N addition (10 g m(-2) year(-1)) and altered precipitation (+/- 50% precipitation) experiments was established in an alpine steppe of the QTP in 2013. Long-term N addition significantly increased N2O emissions. However, neither long-term alterations in precipitation nor the co-occurrence of N addition and altered precipitation significantly affected N2O emissions. These unexpected findings indicate that N2O emissions are particularly susceptible to N deposition in the alpine steppes. Our results further indicated that both biotic and abiotic properties had significant effects on N2O emissions. N2O emissions occurred mainly due to nitrification, which was dominated by ammonia-oxidizing bacteria, rather than ammonia-oxidizing archaea. Furthermore, the alterations in belowground biomass and soil temperature induced by N addition modulated N2O emissions. Overall, this study provides pivotal insights to aid the prediction of future responses of N2O emissions to long-term N deposition and precipitation changes in alpine ecosystems. The underlying microbial pathway and key predictors of N2O emissions identified in this study may also be used for future global-scale model studies.
关键词	AMMONIA-OXIDIZING ARCHAEA INNER-MONGOLIA TIBETAN PLATEAU SOIL-MOISTURE N2O EMISSIONS GRASSLAND RESPONSES MEADOW FLUXES WATER
英文关键词	climate change; functional gene; greenhouse gas; nitrification; Qinghai-Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Ecology ; Evolutionary Biology
WOS记录号	WOS:000705160000001
来源期刊	ECOLOGY AND EVOLUTION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254146
作者单位	[Yang, Yang; Xiao, Yuanming; Wang, Bo; Gao, Yongheng; Zhou, Guoying] Chinese Acad Sci, Northwest Inst Plateau Biol, 23 Xinning Rd, Xining 810008, Qinghai, Peoples R China; [Yang, Yang; Xiao, Yuanming; Wang, Bo] Univ Chinese Acad Sci, Beijing, Peoples R China; [Zhou, Guoying] Chinese Acad Sci, Key Lab Tibetan Med Res, Xining, Peoples R China; [Li, Changbin] Qinghai Univ, Coll Agr & Anim Husb, Xining, Peoples R China; [Gao, Yongheng] Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yang,Xiao, Yuanming,Li, Changbin,et al. Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe[J]. 中国科学院西北生态环境资源研究院,2021,11(21).
APA	Yang, Yang,Xiao, Yuanming,Li, Changbin,Wang, Bo,Gao, Yongheng,&Zhou, Guoying.(2021).Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe.ECOLOGY AND EVOLUTION,11(21).
MLA	Yang, Yang,et al."Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe".ECOLOGY AND EVOLUTION 11.21(2021).