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A large weighing lysimeter for evapotranspiration and soilwater-groundwater exchange studies
Yang, JF; Li, BQ; Liu, SP
2000-07-01
Source PublicationHYDROLOGICAL PROCESSES
Volume14Issue:10Pages:1887-1897
AbstractA large weighing lysimeter was installed at Yucheng Comprehensive Experimental Station, north China, for evapotranspiration and soil-water-groundwater exchanges studies. Features of the lysimeter include the following: (i) mass resolution equivalent to 0.016 min of water to accurately and simultaneously determine hourly evapotranspiration, surface evaporation and groundwater recharge; (ii) a surface area of 3.14 m(2) and a soil profile depth of 5.0 m to permit normal plant development, soil-water extraction, soil-water-groundwater exchanges, and fluctuations of groundwater level; (iii) a special supply-drainage system to simulate field conditions of groundwater within the lysimeter; (iv) a soil mass of about 30 Mg, including both unsaturated and saturated loam. The soil consists mainly of mealy sand and light loam. Monitoring the vegetated lysimeter during the growing period of winter wheat, from October 1998 through to June 1999, indicated that during the period groundwater evaporation contributed 16.6% of total evapotranspiration for a water-table depth from 1.6 m to 2.4 m below ground surface. Too much irrigation reduced the amount of upward water flow from the groundwater table, and caused deep percolation to the groundwater. Data from neutron probe acid tensiometers suggest that soil-water-content profiles and soil-water-potential profiles were strongly affected by shallow groundwater. Copyright (C) 2000 John Wiley & Sons, Ltd.
SubtypeArticle
KeywordWeighing Lysimeter Structure And Design Evapotranspiration Water Exchanges Soil Water Ground-water
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedWater Resources
WOS KeywordWATER-USE ; PERCOLATION ; NITROGEN
Indexed BySCI
Language英语
WOS SubjectWater Resources
WOS IDWOS:000088508700011
PublisherJOHN WILEY & SONS LTD
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68292
Collection中国科学院地理科学与资源研究所
Corresponding AuthorYang, JF
AffiliationChinese Acad Sci, Inst Geog, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Yang, JF,Li, BQ,Liu, SP. A large weighing lysimeter for evapotranspiration and soilwater-groundwater exchange studies[J]. HYDROLOGICAL PROCESSES,2000,14(10):1887-1897.
APA Yang, JF,Li, BQ,&Liu, SP.(2000).A large weighing lysimeter for evapotranspiration and soilwater-groundwater exchange studies.HYDROLOGICAL PROCESSES,14(10),1887-1897.
MLA Yang, JF,et al."A large weighing lysimeter for evapotranspiration and soilwater-groundwater exchange studies".HYDROLOGICAL PROCESSES 14.10(2000):1887-1897.
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