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	Hydraulic resistance partitioning between shoot and root system and plant water status of haloxyolon ammodendron growing at sites of contrasting soil texture
	Xu, GuiQing1,2; Li, Yan1,2; Zou, Ting1,2,3
刊名	Journal of arid land
	2010-06-01
卷号	2期号:2页码:98-106
关键词	Hydraulic architecture Leaf water potential Transpiration Hydraulic resistance Stomatal conductance Hydraulic limitation
ISSN号	1674-6767
DOI	10.3724/sp.j.1227.2010.00098
通讯作者	Li, yan(liyan@ms.xjb.ac.cn)
英文摘要	Hydraulic resistance components and water relations were studied on haloxyolon ammodendron, a small xeric tree, growing at sites significantly differed in soil texture. soil water content, leaf water potential (psi(1)), xylem water potential (psi(x)), root water potential (psi(root)), leaf transpiration rate (tr) and stomatal conductance (g(s)) were measured at the two sites during the growing season of 2005 and 2006. leaf specific hydraulic resistance (r-plant) during the whole growing season, hydraulic resistance of plants (r-p), shoots (r-shoot) and roots (r-root) in the august of both years were calculated and expressed on leaf area basis. the results showed the proportion of the hydraulic resistance of the aerial part (r-shoot) to the r-p was the same to the proportion of the hydraulic resistance of the soil part (r-root) to the r-p, indicating that both parts were equivalent important to plant water hydraulic system from soil to leaf. positive significant correlations were found between r-p and r-root, suggesting that root hydraulics resistance was a major determinant of plant hydraulic resistance (r-p) and transpiration rate. the integrated effect of stomatal control, hydraulic regulation and morphology adjustment enabled plants at heavy soil site surviving the extreme water deficit period.
WOS关键词	DROUGHT RESISTANCE ; GAS-EXCHANGE ; PINUS-TAEDA ; ARCHITECTURE ; CONDUCTANCE ; TREES ; SEEDLINGS ; TRANSPORT ; NUTRIENT ; STRESS
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000293495700003
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2406060
专题	中国科学院大学
通讯作者	Li, Yan
作者单位	1.Chinese Acad Sci, Fukang Stn Desert Ecol, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Key Lab Oasis Ecol & Desert Environm, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xu, GuiQing,Li, Yan,Zou, Ting. Hydraulic resistance partitioning between shoot and root system and plant water status of haloxyolon ammodendron growing at sites of contrasting soil texture[J]. Journal of arid land,2010,2(2):98-106.
APA	Xu, GuiQing,Li, Yan,&Zou, Ting.(2010).Hydraulic resistance partitioning between shoot and root system and plant water status of haloxyolon ammodendron growing at sites of contrasting soil texture.Journal of arid land,2(2),98-106.
MLA	Xu, GuiQing,et al."Hydraulic resistance partitioning between shoot and root system and plant water status of haloxyolon ammodendron growing at sites of contrasting soil texture".Journal of arid land 2.2(2010):98-106.

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