우리나라 국립공원 7개 지역을 대상으로 산사태 발생특성 및 산사태 발생면적에 영향을 미치는 산림환경 인자를 분석하였다. 국립공원내 산사태 발생 수는 총 44개소였으며, 산사태 발생 길이는 평균 152 m, 평균 폭 17m, 평균 발생면적 $2,818m^2$로 나타났다. 산사태가 비교적 많이 발생한 인자는 변성암, 혼효림, 사면경사도 $30{\sim}35^{\circ}$, 북동사면, 해발 1,000 m 이상, 종단사변형은 하강사면, 횡단사면형은 오목사면, 하천차수는 산정 곡두부위인 0차 지점으로 나타났다. 특히 단계별 회귀분석에 의한 산사태 발생면적에 많은 영향을 준 인자는 판상, 북동사면, 2차 하천, 남동사면, 사면경사도, 복합사면(횡단사면형) 순으로 도출되었다.
우리나라 국립공원 7개 지역을 대상으로 산사태 발생특성 및 산사태 발생면적에 영향을 미치는 산림환경 인자를 분석하였다. 국립공원내 산사태 발생 수는 총 44개소였으며, 산사태 발생 길이는 평균 152 m, 평균 폭 17m, 평균 발생면적 $2,818m^2$로 나타났다. 산사태가 비교적 많이 발생한 인자는 변성암, 혼효림, 사면경사도 $30{\sim}35^{\circ}$, 북동사면, 해발 1,000 m 이상, 종단사변형은 하강사면, 횡단사면형은 오목사면, 하천차수는 산정 곡두부위인 0차 지점으로 나타났다. 특히 단계별 회귀분석에 의한 산사태 발생면적에 많은 영향을 준 인자는 판상, 북동사면, 2차 하천, 남동사면, 사면경사도, 복합사면(횡단사면형) 순으로 도출되었다.
This study was carried out to analyze the landslide characteristics and forest environment factors on the landslide area of 7 national parks in korea. The results obtained from this study were summarized as follows; The total number of landslide occurrence was 44 areas. The average length of the lan...
This study was carried out to analyze the landslide characteristics and forest environment factors on the landslide area of 7 national parks in korea. The results obtained from this study were summarized as follows; The total number of landslide occurrence was 44 areas. The average length of the landslides scar was 152 m, average width was 17 m. And the average area was $2,818m^2$. The factors influencing landslides were highly occurred in Metamorphic rock, mixed forest type. And also, $30{\sim}35^{\circ}$ in slope gradient, NE in slope aspect, slope higher than 1,000 m, concave (凹) type in vertical and cross slope, 0 ordered stream. The main factors affecting landslide area in stepwise regression analysis were sheet type in landslided shape, NE in slope aspect, 2 ordered stream, SE in slope aspect, slope gradient and complex slope in cross slope type in order of regression coefficient.
This study was carried out to analyze the landslide characteristics and forest environment factors on the landslide area of 7 national parks in korea. The results obtained from this study were summarized as follows; The total number of landslide occurrence was 44 areas. The average length of the landslides scar was 152 m, average width was 17 m. And the average area was $2,818m^2$. The factors influencing landslides were highly occurred in Metamorphic rock, mixed forest type. And also, $30{\sim}35^{\circ}$ in slope gradient, NE in slope aspect, slope higher than 1,000 m, concave (凹) type in vertical and cross slope, 0 ordered stream. The main factors affecting landslide area in stepwise regression analysis were sheet type in landslided shape, NE in slope aspect, 2 ordered stream, SE in slope aspect, slope gradient and complex slope in cross slope type in order of regression coefficient.
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