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지질조사와 자원연구를 선도하는 한국지질자원연구원 korea institute of geoscience and mineral resouces

논문 상세정보

논문 상세정보
학회/학술지명 ENVIRONMENTAL EARTH SCIENCES 주저자 다비
발표매체 SCI 국가명 독일
논문명 국문 Landslide-susceptibility mapping in Gangwon-do, South Korea, usinglogistic regression and decision tree models
영문 Landslide-susceptibility mapping in Gangwon-do, South Korea, usinglogistic regression and decision tree models
발표일 2019.02.18
관련과제 디지털매핑에 의한 통합 지질정보 제공기술 개발 바로가기
초록 The logistic regression (LR) and decision tree (DT) models are widely used for prediction analysis in a variety of applications.
In the case of landslide susceptibility, prediction analysis is important to predict the areas which have high potential
for landslide occurrence in the future. Therefore, the purpose of this study is to analyze and compare landslide susceptibility
using LR and DT models by running three algorithms (CHAID, exhaustive CHAID, and QUEST). Landslide inventory
maps (762 landslides) were compiled by reference to historical reports and aerial photographs. All landslides were randomly
separated into two data sets: 50% were used to establish the models (training data sets) and the rest for validation (validation
data sets). 20 factors were considered as conditioning factors related to landslide and divided into five categories (topography,
hydrology, soil, geology, and forest). Associations between landslide occurrence and the conditioning factors were analyzed,
and landslide-susceptibility maps were drawn using the LR and DT models. The maps were validated using the area under the
curve (AUC) method. The DT model running the exhaustive CHAID algorithm (prediction accuracy 90.6%) was better than
the DT CHAID (AUC = 90.2%), LR (AUC = 90.1%), and DT QUEST (84.3%) models. The DT model running the exhaustive
CHAID algorithm is the best model in this study. Therefore, all models can be used to spatially predict landslide hazards.

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