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	Evaluation of water use of Caragana microphylla with the stem heat-balance method in Horqin Sandy Land, Inner Mongolia, China
	Yue, Guangyang1; Zhao, Halin1; Zhang, Tonghui1; Zhao, Xueyong1; Niu, Li1; Drake, Sam2
刊名	AGRICULTURAL AND FOREST METEOROLOGY
	2008-10-01
卷号	148期号:11页码:1668-1678
关键词	Caragana microphylla Sap flow Water use Leaf area Scaling-up
ISSN号	0168-1923
DOI	10.1016/j.agrformet.2008.05.019
通讯作者	Yue, Guangyang(yuegy@lzb.ac.cn)
英文摘要	Transpiration rates of a 15-year-old sand-fixation plantation of the leguminous shrub Caragana microphylla in the Horqin Sandy Land, northeast China, were measured by sap flow gauges throughout the summer of 2006. We extrapolated the measurements of water use by individual plants to determine the area-averaged transpiration (T(s)) of the shrubland. The method used for the extrapolation assumes that the transpiration of a shrub was proportional to its leaf area. Similar results were found when comparing transpiration estimated with sap flow measurements to the actual evapotranspiration measured by the weighed lysimeter method, indicating that the scaling procedure can be used to provide reliable estimates of shrub transpiration. Daily sap flow rates and T(s) were mainly controlled by photosynthetically active radiation (Q) and vapor pressure deficit (D), whereas soil moisture had more influence on monthly change in T(s). Maximum stand-level transpiration rates for C. microphylla ranged from 1.64 to 1.95 mm day(-1), with an average value of 1.19 mm day(-1). The seasonal (1 June to 31 August) total transpiration amounted to 109 mm, representing 66% of the incoming precipitation over this period. These results suggest that C. microphylla is highly effective at utilizing scarce water resources in semi-arid environments. (c) 2008 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	VAPOR-PRESSURE DEFICIT ; SAP FLOW MEASUREMENTS ; LEAF-AREA INDEX ; BOWEN-RATIO ; HERBACEOUS PLANTS ; SOIL PROPERTIES ; HYDRAULIC LIFT ; SAPWOOD AREA ; MASS-FLOW ; TRANSPIRATION
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000261301100002
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556127
专题	寒区旱区环境与工程研究所
通讯作者	Yue, Guangyang
作者单位	1.Chinese Acad Sci, Naiman Desertificat Res Stn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Univ Arizona, Off Arid Lands Studies, Tucson, AZ 85719 USA
推荐引用方式 GB/T 7714	Yue, Guangyang,Zhao, Halin,Zhang, Tonghui,et al. Evaluation of water use of Caragana microphylla with the stem heat-balance method in Horqin Sandy Land, Inner Mongolia, China[J]. AGRICULTURAL AND FOREST METEOROLOGY,2008,148(11):1668-1678.
APA	Yue, Guangyang,Zhao, Halin,Zhang, Tonghui,Zhao, Xueyong,Niu, Li,&Drake, Sam.(2008).Evaluation of water use of Caragana microphylla with the stem heat-balance method in Horqin Sandy Land, Inner Mongolia, China.AGRICULTURAL AND FOREST METEOROLOGY,148(11),1668-1678.
MLA	Yue, Guangyang,et al."Evaluation of water use of Caragana microphylla with the stem heat-balance method in Horqin Sandy Land, Inner Mongolia, China".AGRICULTURAL AND FOREST METEOROLOGY 148.11(2008):1668-1678.

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