地球表面丰富多样的地形、地貌是地球内外动力相互作用的结果。宇宙射线辐射地表岩石、沉积物等产生的~(10)Be和~(26)Al放射性核素（半衰期分别为1．5Ma和0．71Ma），它们的浓度主要取决于由地理位置和地形、地貌条件所决定的宇宙射线辐射的通量和时间，从而能够记录地表的形成和演化历史。因此，宇宙成因核素是研究地表形成历史和作用过程的有力工具。 The earth’s surface is rich and diverse topography, the topography is the result of dynamic interaction between the Earth’s interior and exterior. Cosmic rays radiate ~ (10) Be and ~ (26) Al radionuclides (half lives of 1.5Ma and 0.71Ma, respectively) from surface rocks and sediments, and their concentrations depend mainly on the geographical location and topography, The flux and time of cosmic ray radiation, which are determined by the geomorphological conditions, enable the recording of the formation and evolution history of the earth’s surface. Therefore, the cosmic nuclide is a powerful tool for studying the history and the process of surface formation.