【摘要】 我国山区土壤是发展林业的主要土地资源。在山区,崩塌形成粗骨土,崩塌时的气垫搬运作用使粗骨土的分布复杂化。崩塌还可掩埋保存古土壤。坡面水流使坡地土壤厚薄不均,或形成异源剖面,并可使埋藏土壤因冲刷而出露。滑坡可使沉积层序错乱,形成异常剖面。山谷内最易承受和保留各种土壤物质,常出现土壤不同类型杂聚的局面。因此,在林业土壤调查工作中,应重视重力和流水作用对土壤分布的影响。更多还原

【Abstract】 In China, soils of mountain regions are the main land resources for forestry. In those mountain regions, collapse forms the regosols, and the transportation by air cushion when collapse occurs complicates the distribution of regosols. Collapse can also bury and thus preserve the fossil soils. Water flow on slope makes the soil depth uneven at different places, forms the polygenetic soil profiles, and exposes the buried soils by erosion.Valley is readily receptive to Various soil materials and to preserve them, resulting in the coexistence of various soil groups. Therefore, in the surveying program of forest soils, effects of gravity and water flow on soil distribution should also be taken seriously.更多还原