Arid
DOI10.2136/sssaj1994.03615995005800010002x
VADOSE-ZONE TECHNIQUES FOR ESTIMATING GROUNDWATER RECHARGE IN ARID AND SEMIARID REGIONS
ALLISON, GB; GEE, GW; TYLER, SW
来源期刊SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
ISSN0361-5995
出版年1994
卷号58期号:1页码:6-14
英文摘要

Both physical and chemical methods have been used to estimate recharge in arid and semiarid areas. Our review indicates that indirect, physical approaches, such as water balance and Darcy flux measurements, are the least successful, while methods using tracers (e.g., Cl, H-3, and Cl-36) have been the most successful in estimating groundwater recharge in dry regions. Lysimeters, which can directly measure root-zone drainage, have been useful in quantifying recharge, particularly for course soils, but are costly to construct and operate. Of the tracer techniques available, Cl balance techniques appear to be the simplest, least expensive, and most universal for recharge estimation. In Australian studies, under native vegetation in semiarid areas, Cl profiles were found to be remarkably uniform, indicating very low and relatively uniform rates of groundwater recharge. Following changes in land use, recharge appeared to become much more variable, increasing more than two orders of magnitude. Methods for scaling point estimates of recharge to large areas using indirect techniques (such as nondestructive electromagnetic induction) have also been developed. In deep unsaturated zones, the pressure response in the soil water may be recorded in the profile, and simple field measurements may be used to obtain semi-independent verification of recharge rates determined by using Cl balance techniques.


类型Article
语种英语
国家USA ; AUSTRALIA
收录类别SCI-E
WOS记录号WOS:A1994MW42200003
WOS关键词SOIL-WATER MOVEMENT ; UNSATURATED ZONE ; MURRAY BASIN ; DESERT SOILS ; CHLORIDE ; BALANCE ; TRITIUM ; TRACERS ; FLOW ; AUSTRALIA
WOS类目Soil Science
WOS研究方向Agriculture
来源机构Commonwealth Scientific and Industrial Research Organisation ; Desert Research Institute
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/130721
作者单位(1)PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA;(2)DESERT RES INST, RENO, NV 89506 USA;(3)CSIRO, GLEN OSMOND, SA 5064, AUSTRALIA
推荐引用方式
GB/T 7714
ALLISON, GB,GEE, GW,TYLER, SW. VADOSE-ZONE TECHNIQUES FOR ESTIMATING GROUNDWATER RECHARGE IN ARID AND SEMIARID REGIONS[J]. Commonwealth Scientific and Industrial Research Organisation, Desert Research Institute,1994,58(1):6-14.
APA ALLISON, GB,GEE, GW,&TYLER, SW.(1994).VADOSE-ZONE TECHNIQUES FOR ESTIMATING GROUNDWATER RECHARGE IN ARID AND SEMIARID REGIONS.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,58(1),6-14.
MLA ALLISON, GB,et al."VADOSE-ZONE TECHNIQUES FOR ESTIMATING GROUNDWATER RECHARGE IN ARID AND SEMIARID REGIONS".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 58.1(1994):6-14.
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