Arid
DOI10.1002/hyp.10365
Evaluation of irrigation water use efficiency using remote sensing in the middle reach of the Heihe river, in the semi-arid Northwestern China
Wu, Xuejiao1,2; Zhou, Jian1; Wang, Haijing3; Li, Yan4; Zhong, Bo5
通讯作者Zhou, Jian
来源期刊HYDROLOGICAL PROCESSES
ISSN0885-6087
EISSN1099-1085
出版年2015
卷号29期号:9页码:2243-2257
英文摘要

Irrigation of agricultural oases is the main water consumer in semi-arid and arid regions of Northwestern China. The accurate estimation of evapotranspiration (ET) on the oases is extremely important for evaluating water use efficiency so as to reasonably allocate water resources, particularly in semi-arid and arid areas. In this study, we integrated the soil moisture information into surface energy balance system (SEBS) for improving irrigated crop water consumption estimation. The new approach fed with the moderate resolution imaging spectro-radiometer images mapped spatiotemporal ET on the oasis in the middle reach of the Heihe river. The daily ET outputs of the new approach were compared with those of the original SEBS using the eddy correlation observations, and the results demonstrate that the modified SEBS remedied the shortcoming of general overestimating ET without regard to soil water stress. Meanwhile, the crop planting structure and leaf area index spatiotemporal distribution in the studied region were derived from the high-resolution Chinese satellite HJ-1/CCD images for helping analyse the pattern of the monthly ET (ETmonthly). The results show that the spatiotemporal variation of ETmonthly is closely related to artificial irrigation and crop growth. Further evaluation of current irrigation water use efficiency was conducted on both irrigation district scale and the whole middle reach of the Heihe river. The results reveal that the average fraction of consumed water on irrigation district scale is 57% in 2012. The current irrigation water system is irrational because only 52% of the total irrigated amount was used to fulfil plant ET requirement and the rest of the irrigation water recharged into groundwater in the oasis in 2012. However, in view of the whole middle reach of the Heihe river, the irrigation water use efficiency could reach to 66% in 2012. But pumping groundwater for reused irrigation wastes mostly energy instead of water. An improved irrigation water allocation system according to actual ET requirement is needed to increase irrigation efficiency per cubic meter water resource in an effort to save both water and energy. Copyright (c) 2014 John Wiley & Sons, Ltd.


英文关键词evapotranspiration (ET) irrigation water use efficiency remote sensing arid and semi-arid regions
类型Article
语种英语
国家Peoples R China ; Switzerland
收录类别SCI-E
WOS记录号WOS:000353101000013
WOS关键词SURFACE-ENERGY BALANCE ; SYSTEM SEBS ; HEAT-FLUX ; EVAPOTRANSPIRATION ; BASIN ; ALGORITHM ; MODEL ; MODIS ; PARAMETERIZATION ; INTEGRATION
WOS类目Water Resources
WOS研究方向Water Resources
来源机构中国科学院西北生态环境资源研究院
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/187714
作者单位1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100094, Peoples R China;
3.ETH, Inst Environm Engn, CH-8093 Zurich, Switzerland;
4.Chinese Acad Sci, Sch Informat Sci & Engn, Lanzhou 730000, Gansu, Peoples R China;
5.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714
Wu, Xuejiao,Zhou, Jian,Wang, Haijing,et al. Evaluation of irrigation water use efficiency using remote sensing in the middle reach of the Heihe river, in the semi-arid Northwestern China[J]. 中国科学院西北生态环境资源研究院,2015,29(9):2243-2257.
APA Wu, Xuejiao,Zhou, Jian,Wang, Haijing,Li, Yan,&Zhong, Bo.(2015).Evaluation of irrigation water use efficiency using remote sensing in the middle reach of the Heihe river, in the semi-arid Northwestern China.HYDROLOGICAL PROCESSES,29(9),2243-2257.
MLA Wu, Xuejiao,et al."Evaluation of irrigation water use efficiency using remote sensing in the middle reach of the Heihe river, in the semi-arid Northwestern China".HYDROLOGICAL PROCESSES 29.9(2015):2243-2257.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wu, Xuejiao]的文章
[Zhou, Jian]的文章
[Wang, Haijing]的文章
百度学术
百度学术中相似的文章
[Wu, Xuejiao]的文章
[Zhou, Jian]的文章
[Wang, Haijing]的文章
必应学术
必应学术中相似的文章
[Wu, Xuejiao]的文章
[Zhou, Jian]的文章
[Wang, Haijing]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。