Soil erosion - Dojoshinshoku

Japanese: 土壌浸食 - どじょうしんしょく

Soil loss caused by rain, wind, or running water. There is natural (normal) erosion, which occurs slowly under natural conditions, and accelerated erosion, which occurs when vegetation is destroyed artificially. There is water erosion caused by rain and running water, and wind erosion caused by wind, and factors that accelerate erosion include rainfall intensity, wind speed, the level of vegetation development, topography, and soil properties. In general, volcanic ash soil and red soil are prone to erosion. Prevention measures include the creation of terraces, cultivation of cover plants such as pasture grass, construction of drainage channels, installation of windbreaks, soil improvement, and improvement of cropping systems.
→ Related topics Single grain structure | Cluster structure | Contour cultivation

Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:

雨，風，流水により土壌が流失すること。自然条件下でゆるやかに起こる自然（正常）浸食と，植生が人為的に破壊されたりしたために浸食速度が大きくなった加速浸食に分かれる。雨，流水による水食，風による風食などがあり，降雨強度，風速，植生の発達程度，地形，土壌の性質などが加速因子となる。一般に火山灰土，赤色土などが浸食されやすい。防止対策としてはテラスの造成，牧草など被覆植物の栽培，排水路の整備，防風林の設置，土壌改良，作付体系の改善などがある。
→関連項目単粒構造｜団粒構造｜等高線栽培

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