Does precipitation mediate the effects of elevated CO2 on plant growth in the grass species Stipa grandis?

doi:10.1016/j.envexpbot.2016.07.011

	Does precipitation mediate the effects of elevated CO2 on plant growth in the grass species Stipa grandis?
	Shi, Yaohui ; Zhou, Guangsheng ; Jiang, Yanling 1; Wang, Hui 1; Xu, Zhenzhu1
	2016
发表期刊	ENVIRONMENTAL AND EXPERIMENTAL BOTANY
ISSN	0098-8472
卷号	131 页码:146-154
摘要	Elevated atmospheric CO2 concentrations and the simultaneous change in precipitation patterns jointly affect plant growth directly or indirectly. The temperate grassland in northern China is primarily located in arid and semi-arid regions and is sensitive to climatic change, particularly to changes in precipitation. Understanding the effects of precipitation on temperate grasslands is essential to the development of countermeasures to cope with the negative effects of climate change. In this study, we aimed to quantify the effects of precipitation and elevated CO2 by exploring the eco-physiological mechanisms of Stipa grandis (a dominant species in typical steppe), which included tests of morphological parameters, photosynthetic capacity, dark respiration (R-n) and biomass accumulation, using open-top chambers (OTCs). S. grandis showed a photosynthetic down-regulation under elevated CO2 due to the decrease in leaf nitrogen (N). R-n was limited by elevated CO2 as a result of the dilution of leaf N, but the effect of precipitation change on R-n was primarily attributed to the change in leaf mass per area (LMA) and nocturnal stomatal conductance (g(sn)). Precipitation increased the total leaf area primarily by increasing leaf numbers; however, elevated CO2 increased the total leaf area by enlarging the single leaf area. Under conditions of either a serious deficit or an abundance of precipitation, the effect of elevated CO2 on plant biomass was weakened. Thus, Precipitation change mediated the effects of elevated CO2 on S. grandis. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Biomass Nocturnal respiration Elevated CO2 Photosynthetic capacity Precipitation change Stipa grandis
学科领域	Plant Sciences ; Environmental Sciences
DOI	10.1016/j.envexpbot.2016.07.011
收录类别	SCI
语种	英语
WOS关键词	ATMOSPHERIC CO2 ; LEAF RESPIRATION ; CARBON-DIOXIDE ; TERRESTRIAL ECOSYSTEMS ; STOMATAL CONDUCTANCE ; EUCALYPTUS SALIGNA ; RISING CO2 ; PHOTOSYNTHESIS ; RESPONSES ; TEMPERATURE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000383824700016
出版者	PERGAMON-ELSEVIER SCIENCE LTD
文献子类	Article
出版地	OXFORD
EISSN	1873-7307
资助机构	China Special Fund for Meteorological Research in the Public Interest [GYHY201506001-3, 2010CB951300] ; State Key Development Program of Basic Research [GYHY201506001-3, 2010CB951300]
作者邮箱	gszhou@camscma.cn
引用统计	被引频次：5[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/2S10CLM1/25137
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, State Key Lab Severe Weather, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Shi, Yaohui,Zhou, Guangsheng,Jiang, Yanling,et al. Does precipitation mediate the effects of elevated CO2 on plant growth in the grass species Stipa grandis?[J]. ENVIRONMENTAL AND EXPERIMENTAL BOTANY,2016,131:146-154.
APA	Shi, Yaohui,Zhou, Guangsheng,Jiang, Yanling,Wang, Hui,&Xu, Zhenzhu.(2016).Does precipitation mediate the effects of elevated CO2 on plant growth in the grass species Stipa grandis?.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,131,146-154.
MLA	Shi, Yaohui,et al."Does precipitation mediate the effects of elevated CO2 on plant growth in the grass species Stipa grandis?".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 131(2016):146-154.

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