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

	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
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 the 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 standlevel 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 groundwater table (GWT) revealed the potential water use of P. euphratica forests under the non-water stress condition with the GWT less than 3 m deep. Plant eco-physiological parameters, specifically the 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 Heihe River Basin
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Forestry
CSCD记录号	CSCD:5983390
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335795
作者单位	Yu Tengfei, Alax Desert Eco-hydrology Experimental Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Eco-hydrology of Inland River Basin, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Feng Qi, Alax Desert Eco-hydrology Experimental Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Eco-hydrology of Inland River Basin, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Si Jianhua, Alax Desert Eco-hydrology Experimental Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Eco-hydrology of Inland River Basin, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Zhang Xiaoyou, Alax Desert Eco-hydrology Experimental Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Eco-hydrology of Inland River Basin, Chinese Acad...
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.