干旱区生态环境知识资源中心(Arid): Evapotranspiration of a Populus euphratica Oliv. forest and its controlling factors in the lower Heihe River Basin, Northwest China

Arid

DOI	10.3724/SP.J.1226.2017.00175
	Evapotranspiration of a Populus euphratica Oliv. forest and its controlling factors in the lower Heihe River Basin, Northwest China
	Yu, TengFei; Feng, Qi; Si, JianHua; Zhang, XiaoYou; Zhao, ChunYan
通讯作者	Feng, Q
来源期刊	SCIENCES IN COLD AND ARID REGIONS
ISSN	1674-3822
出版年	2017
卷号	9 期号:2 页码:175-182
英文摘要	Evapotranspiration (ET) within an ecosystem is crucial for die water-limited environment that currently lacks adequate quantification in the arid region of Northwest China, mainly covered by phreatophytes, such as the Populus euphratica Oliv. tree and the Tamarix ramosissima Ledeb. shrub species. Accordingly. ET was measured for an entire year using eddy covariance (EC) in P. euphratica stands in the lower Heihe River Basin, Northwest China. During the growing season, the total ET was 850 mm, with a mean of 4.0 mm/d, Which is obviously more than that observed at tree-level and stand level scales, which was likely due to the different level of soil evaporation induced by irrigation via water conveyance. Factors associated with ET fall into either environmental or plant eco-physiological categories. Environmental factors account for at least 79% variation of ET and the linear relationship between ET and the voundwater table (GWT) revealed the potential water use of P. euphratica forests under the non-water stress condition with die GWT less than 3 m deep. Plant eco-physiological parameters, specifically die leaf area 'index (LAI), have direct impact on the seasonal pattern of ET which provides a valuable reference to the wide-area estimates of ET for riparian forests by using LAI. In conclusion, P. euphratica forests have high water use after water conveyance, which may be the result of long-term adapting to local climates and limited water availability.
英文关键词	evapotranspiration eddy covariance Populus euphratica Oliv. forest Bei he River Basin
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000412780900009
WOS关键词	DESERT RIPARIAN FOREST ; LOWER REACHES ; TAMARIX-RAMOSISSIMA ; TARIM RIVER ; ARID REGION ; WATER-USE ; SAP-FLOW ; EXTREME ; ENERGY ; VEGETATION
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/332316
作者单位	[Yu, TengFei; Feng, Qi; Si, JianHua; Zhang, XiaoYou; Zhao, ChunYan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Alax Desert Ecohydrol Expt Res Stn, Lanzhou 730000, Gansu, Peoples R China; [Yu, TengFei; Feng, Qi; Si, JianHua; Zhang, XiaoYou] Chinese Acad Sci, Key Lab Ecohydrol Inland Ricer Basin, Lanzhou 730000, Gansu, Peoples R China; [Yu, TengFei; Feng, Qi; Si, JianHua] Gansu Hydrol & Water Resources Engn Res Ctr, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Yu, TengFei,Feng, Qi,Si, JianHua,et al. Evapotranspiration of a Populus euphratica Oliv. forest and its controlling factors in the lower Heihe River Basin, Northwest China[J],2017,9(2):175-182.
APA	Yu, TengFei,Feng, Qi,Si, JianHua,Zhang, XiaoYou,&Zhao, ChunYan.(2017).Evapotranspiration of a Populus euphratica Oliv. forest and its controlling factors in the lower Heihe River Basin, Northwest China.SCIENCES IN COLD AND ARID REGIONS,9(2),175-182.
MLA	Yu, TengFei,et al."Evapotranspiration of a Populus euphratica Oliv. forest and its controlling factors in the lower Heihe River Basin, Northwest China".SCIENCES IN COLD AND ARID REGIONS 9.2(2017):175-182.