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STUDY OF SOIL WATER MOVEMENT AND RECHARGE RATE OF RAINFALL INFILTRATION IN AERATION ZONE OF LOESS BY MEASURING NATURAL TRITIUM

Zhang Zhigan;Liu Fangzhen;Zhang Hongping;Liu Enkai  
One of important projects in hydrogeology isto study soil water movement and recharge rate ofrainfall infiltration in aeration zone, for which themethod of environmental or artifical isotopes, esp.tritium has been becoming mature day by dayabroad in recent years. In 1995, the authors investi-gated the aeration zone on loessland in Zhang zhuangvillage, Pingding County. Shanxi Province for stud-ying the soil moisture movement velocity and infil-tration recharge rate,and got a satisfactory result.it is found that bomb-produced tritium profile isstill kept intact in acralion zone at loessland so far.The curve of tritium profile is more ideal thanthose published abroad in other strata. The raimfallcontaining bomb-produced tritium has permeateclthe soil only ten metres or sosince 1953. The high-tritium peak of 1963 appears very clear,Some otherparameters were got on the basis of the measure-ment results, One of important projects in hydrogeology isto study soil water movement and recharge rate ofrainfall infiltration in aeration zone, for which themethod of environmental or artifical isotopes, esp.tritium has been becoming mature day by dayabroad in recent years. In 1995, the authors investi-gated the aeration zone on loessland in Zhang zhuangvillage, Pingding County. Shanxi Province for stud-ying the soil moisture movement velocity and infil-tration recharge rate,and got a satisfactory result.it is found that bomb-produced tritium profile isstill kept intact in acralion zone at loessland so far.The curve of tritium profile is more ideal thanthose published abroad in other strata. The raimfallcontaining bomb-produced tritium has permeateclthe soil only ten metres or sosince 1953. The high-tritium peak of 1963 appears very clear,Some otherparameters were got on the basis of the measure-ment results,
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