气候变化领域集成服务门户(CCPortal): Plant organic N uptake maintains species dominance under long-term warming

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DOI	10.1007/s11104-018-3836-x
	Plant organic N uptake maintains species dominance under long-term warming
	Jiang, Lili; Wang, Shiping; Zhe, Pang; Xu, Xingliang; Kardol, Paul; Li, Yaoming; Zhang, Lirong; Wang, Yanfen; Lei, Zhong; Lan, Zhichun; Hill, Paul W.; Zhang, Zhenhua; Luo, Caiyun; Rui, Yichao; Ning, Dong; Jones, Davey L.
通讯作者	Jiang, LL (通讯作者)
发表日期	2018
ISSN	0032-079X
EISSN	1573-5036
起始页码	243
结束页码	255
卷号	433 期号:1-2
英文摘要	Background and aimsThere is ample experimental evidence for shifts in plant community composition under climate warming. To date, however, the underlying mechanisms driving these compositional shifts remain poorly understood. Methods The amount and form of nitrogen (N) available to plants are among the primary factors limiting productivity and plant coexistence in terrestrial ecosystems. We conducted a short-term N-15 tracer experiment in a ten-year warming and grazing experiment in an alpine grassland to investigate the effects of warming and grazing on plant uptake of NO3--N, NH4+-N, and glycine-N. Four dominant plant species (Kobresia humilis, Potentilla anseria, Elymus nutans, Poa annua) were selected. Results We found that 10-years of warming decreased plant uptake of inorganic N by up to 80% in all species. In contrast, warming increased the uptake of organic N in K. humilis, P. anseria, and E. nutans but not in P. annua. Results showed that plant relative biomass increased hyperbolically with the ratio of the plant species total uptake of available N and plant community uptake of available N. And a significant positive correlation between plant species uptake of soil glycine-N and the uptake of total available N. Conclusions The stable relative biomass of plant species is largely dependent on organic N uptake by plants. We conclude that plant organic N uptake maintains species dominance under long-term warming.
关键词	ALPINE MEADOW ECOSYSTEM RELATIVE UPTAKE RATES RECENT CLIMATE-CHANGE TIBETAN PLATEAU ECOLOGICAL RESPONSES NITROGEN LIMITATION SOIL-NITROGEN AMINO-ACIDS GRASSLAND AMMONIUM
英文关键词	Plant N uptake; Alpine grassland; The Tibet plateau; Plant species coexistence
语种	英语
WOS研究方向	Agriculture ; Plant Sciences
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS记录号	WOS:000449754900018
来源期刊	PLANT AND SOIL
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259356
推荐引用方式 GB/T 7714	Jiang, Lili,Wang, Shiping,Zhe, Pang,et al. Plant organic N uptake maintains species dominance under long-term warming[J]. 中国科学院青藏高原研究所,2018,433(1-2).
APA	Jiang, Lili.,Wang, Shiping.,Zhe, Pang.,Xu, Xingliang.,Kardol, Paul.,...&Jones, Davey L..(2018).Plant organic N uptake maintains species dominance under long-term warming.PLANT AND SOIL,433(1-2).
MLA	Jiang, Lili,et al."Plant organic N uptake maintains species dominance under long-term warming".PLANT AND SOIL 433.1-2(2018).