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Tracing infiltration and recharge using stable isotope in taihang Mt., north China
Li F. D.; Song X. F.; Tang C. Y.; Liu C. M.; Yu J. J.; Zhang W. J.
Source PublicationEnvironmental Geology
2007
Volume53
Issue3
Pages687-696
KeywordStable Isotopes Precipitation Soil Water Groundwater Infiltration Recharge Taihang Mt Soil-water Movement Partial Surface Mulch Unsaturated Zone Dry Soils O-18 Evaporation Deuterium Flow Region Impact
AbstractThe groundwater in headwater region is an important recharge source for the adjacent mountain-front plain. In order to reveal the relationship among precipitation, soil water and groundwater, from June to September in 2004, stable isotopes (deuterium and oxygen-18) in precipitation and soil waters at the depths of 10, 20, 30, 50, 70, 90, and 110 cm were analyzed at two sites covered by black locust (Robinia Pseudoacia L.) (Site A) and grass predominated by Themeda triandra (T. japonica (Willd.) Tanaka) and Bothriochloa ischaemum (B. ischaemum (L.) Keng) (Site B) in an experimental catchment at Taihang Mt., North China, respectively. The delta O-18 of precipitation in daily rain events shows large variations (-13.3 to -4.3 C degrees) with a mean of 8.1 C degrees. The delta O-18 and delta D of soil waters along profiles in two sites suggest that the influence of canopy cover was just up to 10 cm in top soil water. The soil water moved over the zero flux plane at 70 cm in-depth is expected to escape the evaporative effect at the end of September in both sites. The results show that the stable isotope, instead of tritium as tradition, can be used to trace the soil water behaviors based on the movement of isotopic peak along the vertical profiles in this semi-arid and semi-humid mountainous region. The infiltration depths of soil water in Taihang Mt. are 12 and 10 mm/day from June to September in 2004 in Site A and Site B, respectively. Tracing by stable isotope, recharge fluxes of soil water to local groundwater are of 3.8 and 3.2 mm/day in Site A and Site B, respectively. The results provide desirable information for assessment of local groundwater resources.
Indexed BySCI
Language英语
ISSN0943-0105
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/23677
Collection历年回溯文献
Recommended Citation
GB/T 7714
Li F. D.,Song X. F.,Tang C. Y.,et al. Tracing infiltration and recharge using stable isotope in taihang Mt., north China. 2007.
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