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土壤可蚀性的研究变异性是当代土壤侵蚀预测预报研究的核心。本文综述了土壤可蚀性变异性研究的进展及存在的问题，提出了利用１３７Ｃｓ法定量测定土壤可蚀性时空变异的新技术。
Research on soil erodibility variability is the core of contemporary soil erosion prediction and forecasting. This paper reviews the progress and existing problems in the research on variability of soil erodibility, and proposes a new technique for the quantitative determination of the spatial and temporal variability of soil erodibility using 137Cs.