以侵蚀和表层崩塌为代表，在山地发生的土抄灾害经常与水移动密切相关。因此，了解并预报山地水移动是防止土沙灾害和减灾的重要课题。日本森林大多分布在山地，森林水文学的研究对象也以山地为主，这正是水土保持学与森林水文学的结合点。本文试图以了解和预测水移动为视点， Erosion and surface collapse as the representative, earth-shattering occurred in the mountains are often closely related to water movement. Therefore, understanding and forecasting the movement of mountain water is an important issue in preventing soil and sand disasters and reducing disaster. Japanese forests are mostly distributed in the mountains, forest hydrology is also the main research object of the mountain, which is the integration of soil and water conservation and forest hydrology point. This article attempts to understand and predict water movement as the point of view,