浸润锋运动影响因素的研究

Study on the Factors of Damp-Surface Motion Influence

运用线模型理论，对黄土低山丘陵区的浸润锋运动进行了综合研究，得到了各因素对浸润好的正规方程解，可预测不同立地条件下的浸润锋；找出了影响浸润锋运动的主导因素，它们依次是降雨历时、降雨强度、工地利用方式与坡度的交互作用；通过分析揭示了各因素对浸润锋的影响程度，浸润锋的下行深度与降雨历时和降雨强度呈正相关，工地利用方式不同，浸润锋的下行深度也不一样，杨林土壤浸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。这些都为黄土丘陵区的综合治理提供了良好的理论基础．

The damp-surface motion was studied in Loess Low Hill area with applying liner modeltheory.The normal equation solutions of factors to damp- surface were made.They could forecast thedamp-surface in different sites. The leading factors to damp-surface motion and influence value of everyfactor to damp-surface motion were found out.They were rainfall time,rain fall intensity and the inter-action;between land-use type and the slope. The depth of the damp-surface motion is is direct propor-tion to rainfall time and rainfall intensity.The depth of the damp- surface motion is different because ofdifferent land-tise types.The damp-surface motion rate of poplar forest land is faster than the rate offarm land and grass land.The lowest one is bare land and chinese pine land.These provide some theoreti-cal bases for managing comprehensively Loess Low Hill area.