본 연구는 산악형 설악산 국립공원지역에서 발생한 토석류 발생지 263개소를 대상지로 선정하여 다양한 산림환경 인자별로 조사하고 토석류발생지 특성을 분석하였다. 토석류 평균(침식량, 길이, 폭, 면적)은 각각 1,935㎥, 103.7m, 14.4m, 1,728㎡로 나타났다. 산림환경 인자가 토석류 발생 빈도에 미치는 영향을 분석한 결과, 경사도(31∼40°), 사면방위(남사면), 종단사면(오목凹), 횡단사면(오목凹), 표고(801∼1,200m), 사면위치(산록), 하천차수 (1차), 임상(혼효림), 모암(화강암), 토심(15cm 이하)에서 발생빈도가 높은 것으로 조사되었다. 토석류가 발생한 피해지에서의 침식량과 산림환경 인자와의 상관관계를 분석한 결과는, 종단사면(오목凹, 복합凹凸), 표고(1,201m 이상), 토심(46cm 이상)에서 1% 수준 내에서 정의 상관관계를 보였다.

This study was carried out to analyze the debris flow characteristics and forest environment factors on the debris flow area of rugged mountain range in the korean national park(Mt. Seorak). The results obtained from this study were summarized as follows; The total number of debris flow occurrence was 263 areas. The average area of debris flow scar was 1,728㎡, average sediment of debris flow was 1,935㎥, average length of the debris flow was 103.7m, average width was 14.4m. The debris flow were highly occurred in igneous rock and coniferous. And also, slope gradient (31∼40°), slope gradient (N), vertical slope (concave), cross slope (concave), altitude (801∼1,200m), position (lower), stream order (1 order), forest type (mixed), parent rock (igneous) and soil depth (< 15cm). The relationship between debris flow Soil volume and environmental factors was a positive correlation with. The variables of vertical slope (concave, complex), altitude (1,201 <), soil depth (46cm <), in correlation analysis were significant at 1 % level.

초록
Abstract
서론
재료 및 방법
    1. 대상지 선정 및 현장조사 방법
    2. 통계분석방법
결과 및 고찰
    1. 토석류 피해지 발생 규모 특성 분석
    2. 토석류 발생빈도와 산림환경 인자와의 상관성분석
    3. 토석류 발생지역 침식량과 산림환경 인자와의 상관성분석
References

• 이성재(서울대학교 농업생명과학대학 학술림) | Sung-Jae Lee (Seoul National University Forest, Seoul 08826, Korea)
• 마호섭(경상대학교 환경산림과학부(농업생명과학연구원)) | Ho-Seop Ma (Department of Forest Environmental Resources, Gyeongsang Nat'l Univ.(Insti. of Agri. Llife Science), Jinju 52828, Korea) Corresponding author