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	Evapotranspiration and its main controlling mechanism over the desert riparian forests in the lower tarim river basin
	Yuan GuoFu1; Luo Yi1; Shao MingAn1; Zhang Pei1,2; Zhu XuChao1,2
刊名	Science china-earth sciences
	2015-06-01
卷号	58期号:6页码:1032-1042
关键词	Lower reaches of the tarim river Water cycling Evapotranspiration Desert riparian forests Tamarix spp. Populus euphratica
ISSN号	1674-7313
DOI	10.1007/s11430-014-5045-7
通讯作者	Yuan guofu(yuangf@igsnrr.ac.cn)
英文摘要	Evapotranspiration (et) and its controlling mechanism over the desert riparian forests in arid regions are the important scientific basis for the water resources managements of the lower reaches of the inland rivers of china. nearly three years of continuous measurements of surface et, soil water content at different depths and groundwater table over a typical tamarix spp. stand and a typical populus euphratica stand were conducted in the lower reach of the tarim river. the et seasonal trends in the growing season were controlled by plant phenology, and et in non-growing season was weak. the diurnal variations of et resulting from the comprehensive effects of all atmospheric factors were significantly related with reference et. the spatial pattern of et was determined by vegetation lai, more vegetation coverage, more et amount. groundwater is the water source of surface et, and the soil water in shallow layers hardly took part in the water exchange in the groundwater-soil-plant-air system. the temporal processes of et over the tamarix stand and the populus stand were similar, but the water consumption of the well-grown populus euphratica was higher than that of the well-grown tamarix spp. further analysis indicates that plant transpiration accounts for most of the surface et, with soil evaporation weak and negligible; groundwater table is a crucial factor influencing et over the desert riparian forests, groundwater influences the processes and amounts of et by controlling the growth and spatial distribution of desert riparian forests; quantifying the water stress of desert riparian forests using groundwater table is more appropriate, rather than soil water content. based on the understanding of et and water movements in the groundwater-soil-plant-air system, a generalized framework expressing the water cycling and its key controlling mechanism in the lower reaches of the inland rivers of china is described, and a simple model to estimate water requirements of the desert riparian forests is presented.
WOS关键词	NORTHWESTERN CHINA ; LOWER REACHES ; WATER ; VEGETATION ; DYNAMICS ; XINJIANG ; AREAS
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000354901900017
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2376579
专题	中国科学院大学
通讯作者	Yuan GuoFu
作者单位	1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yuan GuoFu,Luo Yi,Shao MingAn,et al. Evapotranspiration and its main controlling mechanism over the desert riparian forests in the lower tarim river basin[J]. Science china-earth sciences,2015,58(6):1032-1042.
APA	Yuan GuoFu,Luo Yi,Shao MingAn,Zhang Pei,&Zhu XuChao.(2015).Evapotranspiration and its main controlling mechanism over the desert riparian forests in the lower tarim river basin.Science china-earth sciences,58(6),1032-1042.
MLA	Yuan GuoFu,et al."Evapotranspiration and its main controlling mechanism over the desert riparian forests in the lower tarim river basin".Science china-earth sciences 58.6(2015):1032-1042.

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