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本文介绍了~(137)Cs法测算农耕地土壤侵蚀量的基本原理和方法。梁峁坡农耕地和梯田5个土壤剖面的~(137)Cs含量的测定结果表明,土壤剖面的~(137)Cs总量很好地表征了农耕地的侵蚀程度。根据卡钱诺斯基和奎因(Kachanoski and Quine)1987年分别提出的曲线和本文提出的公式求得的侵蚀模数值和实测资料分析值基本吻合。
This paper introduces the basic principle and method of ~ (137) Cs method to measure the amount of soil erosion in agricultural land. The results of ~ (137) Cs in five soil profiles of farmland and terraced fields show that the total amount of 137Cs in the soil profile can well characterize the erosion degree of farmland. According to the curves proposed by Kachanoski and Quine in 1987 and the equations proposed in this paper, the values of erosion modulus and measured data agree well with each other.