Interactive effects of elevated CO2 and precipitation change on leaf nitrogen of dominant Stipa L. species

doi:10.1002/ece3.1581

	Interactive effects of elevated CO2 and precipitation change on leaf nitrogen of dominant Stipa L. species
	Shi, Yaohui 1; Zhou, Guangsheng 2; Jiang, Yanling ; Wang, Hui 1; Xu, Zhenzhu; Song, Jian
	2015
发表期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
卷号	5 期号:14 页码:2956-2965
摘要	Nitrogen (N) serves as an important mineral element affecting plant productivity and nutritional quality. However, few studies have addressed the interactive effects of elevated CO2 and precipitation change on leaf N of dominant grassland genera such as Stipa L. This has restricted our understanding of the responses of grassland to climate change. We simulated the interactive effects of elevated CO2 concentration and varied precipitation on leaf N concentration (N-mass) of four Stipa species (Stipa baicalensis, Stipa bungeana, Stipa grandis, and Stipa breviflora; the most dominant species in arid and semiarid grassland) using open-top chambers (OTCs). The relationship between the N-mass of these four Stipa species and precipitation well fits a logarithmic function. The sensitivity of these four species to precipitation change was ranked as follows: S.bungeana>S.breviflora>S.baicalensis>S.grandis. The N-mass of S.bungeana was the most sensitive to precipitation change, while S.grandis was the least sensitive among these Stipa species. Elevated CO2 exacerbated the effect of precipitation on N-mass. N-mass decreased under elevated CO2 due to growth dilution and a direct negative effect on N assimilation. Elevated CO2 reduced N-mass only in a certain precipitation range for S.baicalensis (163-343mm), S.bungeana (164-355mm), S.grandis (148-286mm), and S.breviflora (130-316mm); severe drought or excessive rainfall would be expected to result in a reduced impact of elevated CO2. Elevated CO2 affected the N-mass of S.grandis only in a narrow precipitation range. The effect of elevated CO2 reached a maximum when the amount of precipitation was 253, 260, 217, and 222mm for S.baicalensis, S.bungeana, S.grandis, and S.breviflora, respectively. The N-mass of S.grandis was the least sensitive to elevated CO2. The N-mass of S.breviflora was more sensitive to elevated CO2 under a drought condition compared with the other Stipa species.
关键词	Elevated CO2 interactive effect leaf N concentration precipitation change Stipa L
学科领域	Ecology ; Evolutionary Biology
DOI	10.1002/ece3.1581
收录类别	SCI
语种	英语
WOS关键词	ATMOSPHERIC CO2 ; HIGH-TEMPERATURE ; GROWTH-RESPONSE ; CARBON-DIOXIDE ; USE EFFICIENCY ; PLANT-GROWTH ; WATER-STRESS ; PHOTOSYNTHESIS ; ENRICHMENT ; GRASSLAND
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000358452700017
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
资助机构	State Key Development Program of Basic Research [2010CB951300] ; Strategic Priority Research Program-Climate Change: Carbon Budget and Related Issues of the Chinese Academy of Sciences [XDA05050408] ; State Key Laboratory of Vegetation and Environmental Change [2011zyts09]
作者邮箱	gszhou@ibcas.ac.cn ; yljiang@ibcas.ac.cn
作品OA属性	Green Published, gold
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25753
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Shi, Yaohui,Zhou, Guangsheng,Jiang, Yanling,et al. Interactive effects of elevated CO2 and precipitation change on leaf nitrogen of dominant Stipa L. species[J]. ECOLOGY AND EVOLUTION,2015,5(14):2956-2965.
APA	Shi, Yaohui,Zhou, Guangsheng,Jiang, Yanling,Wang, Hui,Xu, Zhenzhu,&Song, Jian.(2015).Interactive effects of elevated CO2 and precipitation change on leaf nitrogen of dominant Stipa L. species.ECOLOGY AND EVOLUTION,5(14),2956-2965.
MLA	Shi, Yaohui,et al."Interactive effects of elevated CO2 and precipitation change on leaf nitrogen of dominant Stipa L. species".ECOLOGY AND EVOLUTION 5.14(2015):2956-2965.

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