원문정보
초록
영어
The aim of this study was to investigate the characteristics of reestablishment and distribution of riparian vegetation following a disturbance induced by a debris flow event in a mountainous stream, Mount Seorak National Park, Korea. Field works, including a cross-section leveling and vegetation sampling using the belt transect method, were conducted to examine the relationship between the geomorphic site condition and vegetation distribution at 11 debris flow terraces. The results showed that the number of riparian vegetation species increased with increasing distance from the stream channel and height from the channel bed; this indicates the effects of the geomorphic site condition and flood disturbance frequency on the establishment of riparian vegetation. The number of riparian vegetation species was also positively correlated with the mean age of Pinus densiflora seedlings, considered as an indicator plant for the surface age of debris flow terrace in this study. Additionally, we found that annual and biennial herbaceous plants occurred more frequently on the surface of debris flow terraces than in adjacent hillslope forest.