Arid
DOI10.1002/hyp.9302
Soil profile evolution following land-use change: implications for groundwater quantity and quality
Huang, Tianming1; Pang, Zhonghe1; Edmunds, W. Mike2
通讯作者Pang, Zhonghe
来源期刊HYDROLOGICAL PROCESSES
ISSN1099-1085
出版年2013
卷号27期号:8页码:1238-1252
英文摘要

Soil and vadose zone profiles are used as an archive of changes in groundwater recharge and water quality following changes in land use in an area of the Loess Plateau of China. A typical rain-fed loess-terrace agriculture region in Hequan, Guyuan, is taken as an example, and multiple tracers (chloride mass balance, stable isotopes, tritium and water chemistry) are used to examine groundwater recharge mechanisms and to evaluate soil water chloride as an archive for recharge rate and water quality. Results show that groundwater recharge beneath natural uncultivated grassland, used as a baseline, is about 94100mmyear1 and that the time it takes for annual precipitation to reach water table through the thick unsaturated zone is from decades to hundreds of years (tritium free). This recharge rate is 23 orders of magnitude more than in the other semiarid areas with similar annual rainfall but with deep-rooted vegetation and relatively high temperature. Most of the water that eventually becomes recharge originally infiltrated in the summer months. The conversion from native grassland to winter wheat has reduced groundwater recharge by 4250% (5055mmyear1 for recharge), and the conversion from winter wheat to alfalfa resulted in a significant chloride accumulation in the upper soil zone, which terminated deep drainage. The paper also evaluates the time lag between potential recharge and actual recharge to aquifer and between increase in solute concentration in soil moisture and that in the aquifer following land-use change due to the deep unsaturated zone. Copyright (c) 2012 John Wiley & Sons, Ltd.


英文关键词groundwater recharge land-use change chloride mass balance Loess Plateau of China soil profile
类型Review
语种英语
国家Peoples R China ; England
收录类别SCI-E
WOS记录号WOS:000316967900009
WOS关键词CHLORIDE MASS-BALANCE ; LOESS PLATEAU ; ARID REGIONS ; UNSATURATED ZONE ; TRITIUM PROFILES ; STABLE ISOTOPES ; WATER CHEMISTRY ; MURRAY BASIN ; DESERT SOILS ; RECHARGE
WOS类目Water Resources
WOS研究方向Water Resources
来源机构中国科学院地质与地球物理研究所 ; University of Oxford
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/177524
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Engn Geomech, Beijing 100029, Peoples R China;
2.Univ Oxford, Sch Geog & Environm, Oxford Univ Ctr Water Res, Oxford OX1 3QY, England
推荐引用方式
GB/T 7714
Huang, Tianming,Pang, Zhonghe,Edmunds, W. Mike. Soil profile evolution following land-use change: implications for groundwater quantity and quality[J]. 中国科学院地质与地球物理研究所, University of Oxford,2013,27(8):1238-1252.
APA Huang, Tianming,Pang, Zhonghe,&Edmunds, W. Mike.(2013).Soil profile evolution following land-use change: implications for groundwater quantity and quality.HYDROLOGICAL PROCESSES,27(8),1238-1252.
MLA Huang, Tianming,et al."Soil profile evolution following land-use change: implications for groundwater quantity and quality".HYDROLOGICAL PROCESSES 27.8(2013):1238-1252.
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