Sensitive indicators of Stipa bungeana response to precipitation under ambient and elevated CO2 concentration

doi:10.1007/s00484-017-1434-x

	Sensitive indicators of Stipa bungeana response to precipitation under ambient and elevated CO2 concentration
	Shi, Yaohui ; Zhou, Guangsheng ; Jiang, Yanling 1; Wang, Hui 1; Xu, Zhenzhu1
	2018
发表期刊	INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
ISSN	0020-7128
卷号	62 期号:2 页码:141-151
摘要	Precipitation is a primary environmental factor in the semiarid grasslands of northern China. With increased concentrations of atmospheric greenhouse gases, precipitation regimes will change, and high-impact weather events may be more common. Currently, many ecophysiological indicators are known to reflect drought conditions, but these indicators vary greatly among species, and few studies focus on the applicability of these drought indicators under high CO2 conditions. In this study, five precipitation levels (- 30%, - 15%, control, + 15%, and + 30%) were used to simulate the effects of precipitation change on 18 ecophysiological characteristics in Stipa bungeana, including leaf area, plant height, leaf nitrogen (N), and chlorophyll content, among others. Two levels of CO2 concentration (ambient, 390 ppm; 550 ppm) were used to simulate the effects of elevated CO2 on these drought indicators. Using gray relational analysis and phenotypic plasticity analysis, we found that total leaf area or leaf number (morphology), leaf water potential or leaf water content (physiology), and aboveground biomass better reflected the water status of S. bungeana under ambient and elevated CO2 than the 13 other analyzed variables. The sensitivity of drought indicators changed under the elevated CO2 condition. By quantifying the relationship between precipitation and the five most sensitive indicators, we found that the thresholds of precipitation decreased under elevated CO2 concentration. These results will be useful for objective monitoring and assessment of the occurrence and development of drought events in S. bungeana grasslands.
关键词	Drought indicator Elevated CO2 Gray relational analysis Plasticity index Threshold
学科领域	Biophysics ; Environmental Sciences ; Meteorology & Atmospheric Sciences ; Physiology
DOI	10.1007/s00484-017-1434-x
收录类别	SCI
语种	英语
WOS关键词	CARBON-DIOXIDE ; WATER RELATIONS ; LOESS PLATEAU ; DROUGHT ; TRAITS ; STRESS ; TOLERANCE ; GROWTH ; CHINA ; PHOTOSYNTHESIS
WOS记录号	WOS:000423319100001
出版者	SPRINGER
文献子类	Article
出版地	NEW YORK
EISSN	1432-1254
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31661143028] ; China Special Fund for Meteorological Research in the Public Interest (Major projects) [GYHY201506001-3]
作者邮箱	gszhou@camscma.cn
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/2S10CLM1/20670
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. Sensitive indicators of Stipa bungeana response to precipitation under ambient and elevated CO2 concentration[J]. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,2018,62(2):141-151.
APA	Shi, Yaohui,Zhou, Guangsheng,Jiang, Yanling,Wang, Hui,&Xu, Zhenzhu.(2018).Sensitive indicators of Stipa bungeana response to precipitation under ambient and elevated CO2 concentration.INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,62(2),141-151.
MLA	Shi, Yaohui,et al."Sensitive indicators of Stipa bungeana response to precipitation under ambient and elevated CO2 concentration".INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 62.2(2018):141-151.

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