한라산 아고산대의 초지 박리현상 = Turf Exfoliation in the Subalpine Zone of Mt. Halla

다국어 초록 (Multilingual Abstract)

Bare grounds with a terrace scarp are examined to evaluate erosional processes related to turf exfoliation in the subalpine zone of Mt. Halla. The terrace scarp is denudated by several agents such as wind, needle ice, raindrop, flowing water and animal. Deflation and frost action are particularly dominant processes due to the strong wind and frequent diurnal freeze-thaw cycle in the subalpine zone of Mt. Halla. Rainsplash and rill erosion are also important contributing processes in the rainy season. Recent increase in roe deer(Carpreolus pygargus tianschanicus) appears to be responsible for turf destruction at Mt. Halla. The terrace scarp retreats in different ways depending on ground vegetation. The terrace edge with Festuca ovina is easily detached and collapsed from a vegetation cover, so that the scarp face is well exposed to erosional processes. By contrast, the terrace edge with Sasa quelpaertensis is connected to a vegetation cover with rhizomes, resulting in the scarp face covered with the vegetation cover.