Studies on Depositional Structure and Formative Process of Soil and Weathering Debris in Mountain Slope

我们已经确定了一些关于恋童癖和拓扑现象的问题。and obtained corroboration concerning about formative process of soil and topography. Soil and topography were deformed accidentary by volcanic action。在7.5 x <10 ^4> years and 2.2 x <10 ^4> years ago.九州地区的大片地区被覆盖在大规模焦状溪流的高温沉积物上（大约减少200 - 300 <km ^2>），大致上森林已经被破坏，植物丢失，而且由于高温造成。由于植物的损失，渗透能力被极大地减少了。Gully erosion是一种加速的暴力，由于表面流动在渗透能力中的退化而导致的。通道和胃灼热在斜坡和承受点的斜坡身体被剥夺了，被水流中的通道捕获了。大规模和伟大的许多陆地幻灯片被发现在一个不稳定的斜坡导致了轴承点的损失。所有的土壤都被带走了，所有的斜坡都被扭曲了，事故发生后。森林将被完全恢复，并将与增加渗透能力和土地幻灯片的退化相结合。Gully erosion是一个遵循的过程。土壤是由植物登记处的沉积剂形成的。渗透能力增加了。- >表面流动减少。“Gully erosion decrease。陆地滑动退化：由床岩石提供的物理天气，由灰尘和火山性延长提供，由灰烬最近侵蚀的精细土壤提供：土壤侵蚀由意外重雨引起。最近的陆地滑动：地下流动和地面水导致土壤结构的破坏。

We have assumed following problem of pedological and topographical phenomena. and obtained corroboration concerning about formative process of soil and topography.Soil and topography were deformed accidentary by volcanic action. mainly pyroclastic flow and volcanic ash in 7.5x <10^4> years and 2.2x <10^4> years ago.・ Large zone of Kyushu disrict was coated with high temperature deposits of large-scale pyroclastic flows (about diminished 200-300 <km^2> individually), and simultaneously most of forest were destroied and plant were lost, caused by high temperature.・ Infiltration capacity was extreamly decreased caused by the loss of plant.・ Gully erosion was acceleted violently with surface flow caused by the decrease in infiltration capacity.・ Channels with gully erosion were dissected in the slope and bearing point of slope body took away caused by stream flow in channels.・ Large-scale and great many landslides occured in moutain slope caused by loss of bearing point. ・ All of soil was carried away and all of slope was bared.After the accident. forest would be recovered quitely and it would accompanied with increase of infiltration capacity and decrease of landslides. gully erosion as following process.・ Soil was formated with depositional agent of plant registance.・ Infiltration capacity increse. -> Surface flow decrease. -> Gully erosion decrease. -> Land slides decrease.Physical weathering supplied with debris from bed rock, and volcanic eruptions supplied with fine soil from ash Recent erosion : Soil erosion caused by accidental heavy rain. Recent landslide : Destruction of soil structure caused by subsurface flow and groud water.