【摘要】 运用人工降雨技术，对黄土低山丘陵区的湿润锋运动规律进行了综合研究。得到了各因素对湿润锋的正规方程解，可预测不同立地条件下的湿润锋，找出了影响湿润锋运动的主导因素，它们依次是降雨历时、降雨强度、土地利用方式与坡度的交互作用。通过分析揭示了各因素对湿润锋的影响程度，湿润锋的下行深度与降雨历时和降雨强度呈正相关，土地利用方式不同。湿润锋的下行深度也不一样，杨林土壤湿润锋的下行速率最快，其次是农田地和草地，最后是裸地和油松林土壤。为黄土低山丘陵区的综合治理提供根据。更多还原

【Abstract】 The damp-surface motion was studied in Loess Low Hill area with applying artificialsimulated rainfall.The formal equation solutions of factors to damp-surface were obtained,whichcould forecast the damp-surface in different sites.The leading factors to damp-surface were rain-fall time,rain fall intensity and the interactions between land-use type and the slope. The depthof the damp-surface motion is in direct proportion to rairifall time and rainfall intensity.Thedepth of the damp-surface motion is defferent because of different land-use types. The damp-sur-face motion rate of poplar forest land is fester than that of farm land and grass land.The lowestone is bare land and chinese pine land.These provide some theoretical bases for managing com-prehensively Loess Low Hill area.更多还原