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	Effects of elevated CO2 concentration on water use efficiency of Tamarix ramosissima in an extremely arid region
	Chang, Zongqiang; Ma, Yali; Zhou, Chenglin
刊名	ENVIRONMENTAL EARTH SCIENCES
	2016-11-01
卷号	75期号:21页码:6
关键词	Tamarix ramosissima leaves Transpiration Water use efficiency Concentration of CO2
ISSN号	1866-6280
DOI	10.1007/s12665-016-6221-1
通讯作者	Chang, Zongqiang(changzq@lzb.ac.cn)
英文摘要	The variation of net photosynthetic rate (P-n), transpiration rate (T-r), and intercellular CO2 concentration (Ci) with changes in light intensity of Tamarix ramosissima leaves was studied during the growing seasons of 2012 and 2013 in the extremely arid region of Ejina Oasis, using the LI-6400 portable photosynthesis measurement system. Results indicate that Ci decreased and P-n and T-r increased with light intensity. After reaching the light saturation point, P-n decreased gradually with the enhanced greater light intensity. The apparent maximum photosynthetic rate increased with CO2 concentration, from 17.69 to 27.05 mu mol/(m(2) s); apparent quantum efficiency also increased, as did the light saturation point of T. ramosissima leaves. Water use efficiency (WUE) increased initially but gradually decreased after maximizing with the enhanced light intensity. T-r and Ci increased with elevated CO2 concentration. P-n and WUE increased with CO2 concentration when that concentration was 200-600 mu mol/mol. When that concentration increased to 1000 mu mol/mol, WUE increased initially but eventually decreased.
收录类别	SCI
WOS关键词	CARBON-DIOXIDE ; GAS-EXCHANGE ; RESPONSES ; PHOTOSYNTHESIS ; ENRICHMENT ; DROUGHT ; GROWTH ; LIGHT ; C-3 ; ASSIMILATION
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000388600900017
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557519
专题	寒区旱区环境与工程研究所
通讯作者	Chang, Zongqiang
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chang, Zongqiang,Ma, Yali,Zhou, Chenglin. Effects of elevated CO2 concentration on water use efficiency of Tamarix ramosissima in an extremely arid region[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(21):6.
APA	Chang, Zongqiang,Ma, Yali,&Zhou, Chenglin.(2016).Effects of elevated CO2 concentration on water use efficiency of Tamarix ramosissima in an extremely arid region.ENVIRONMENTAL EARTH SCIENCES,75(21),6.
MLA	Chang, Zongqiang,et al."Effects of elevated CO2 concentration on water use efficiency of Tamarix ramosissima in an extremely arid region".ENVIRONMENTAL EARTH SCIENCES 75.21(2016):6.

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