气候变化领域集成服务门户(CCPortal): Evapotranspiration of a Populus euphratica Oliv. forest and its controlling factors in the lower Heihe River Basin, Northwest China

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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
发表日期	2017
ISSN	1674-3822
起始页码	175
结束页码	182
卷号	9 期号:2
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
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS关键词	DESERT RIPARIAN FOREST ; LOWER REACHES ; TAMARIX-RAMOSISSIMA ; TARIM RIVER ; ARID REGION ; WATER-USE ; SAP-FLOW ; EXTREME ; ENERGY ; VEGETATION
WOS记录号	WOS:000412780900009
来源期刊	SCIENCES IN COLD AND ARID REGIONS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239371
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]. 中国科学院西北生态环境资源研究院,2017,9(2).
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).
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).