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

文献类型：期刊论文

作者Shi, Yaohui2; Zhou, Guangsheng3; Jiang, Yanling; Wang, Hui2; Xu, Zhenzhu; Song, Jian
刊名ECOLOGY AND EVOLUTION
出版日期2015
卷号5期号:14页码:2956-2965
关键词Elevated CO2 interactive effect leaf N concentration precipitation change Stipa L
ISSN号2045-7758
DOI10.1002/ece3.1581
文献子类Article
英文摘要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.
学科主题Ecology ; Evolutionary Biology
出版地HOBOKEN
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)
语种英语
WOS记录号WOS:000358452700017
出版者WILEY
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]
源URL[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 Meteorol Sci, Beijing 100081, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, 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.

入库方式： OAI收割

来源：植物研究所

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