Dong Zhangyu, ZhangJin, Peng Peng, et al. Landslide Susceptibility Evaluation Based on Coupling of GBDT-LR Model and Information Model[J]. Bulletin of Soiland Water Conservation, 2023, 43(1): 149-157.
DOI:
Dong Zhangyu, ZhangJin, Peng Peng, et al. Landslide Susceptibility Evaluation Based on Coupling of GBDT-LR Model and Information Model[J]. Bulletin of Soiland Water Conservation, 2023, 43(1): 149-157. DOI: 10.13961/j.cnki.stbctb.2023.01.018.
Landslide Susceptibility Evaluation Based on Coupling of GBDT-LR Model and Information Model
[Objective] The accurate and rapid landslide susceptibility zoning method were studied in order to provide a reference for regional safety monitoring
and provide a scientific basis for the government to control landslide disasters. [Methods] The study was conducted in the Guichi District of Chizhou City
Anhui Province. The coupled model of gradient boosting decision tree-logistic regression (GBDT-LR) and an information value (I) model was used to determine the evaluation of regional landslide susceptibility. The model learns from the original samples and combines them to generate new simulation samples in order to enhance the fitting ability of the model to evaluate landslide susceptibility. The Borderline-Smote algorithm was used to solve the problem of sample data asymmetry. The slope unit divided by r.slopeunits software was selected as the minimum evaluation unit
and a total of 10 evaluation factors were selected: slope gradient
slope aspect
terrain curvature
profile curvature
plane curvature
topographic wetness index (TWI)
topographic relief
normalized difference vegetation index (NDVI)
distance from fault
and distance from river. The landslide susceptibility model was evaluated from three aspects: frequency ratio
density of landslide disaster points and hidden danger points
and the receiver operating characteristic (ROC) curve. [Results] The experimental results showed that the frequency ratio of the coupled model I-GBDT-LR was 10%
13%
and 7% greater than that of the I
LR
and I-LR models
respectively. The density of landslide disaster points and hidden danger points in the high risk area increased by about 9
11
and 7
respectively
and the ROC accuracy increased by about 10%
9%
and 5%
respectively. [Conclusion] The accuracy of the coupled model was higher than that of the single model
and the accuracy of the coupled model proposed was higher than that of the I-LR coupled model
which provides an effective and new evaluation method for landslide susceptibility evaluation.
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Comparative analysis of landslide susceptibility based on different evaluation units——A case study of Ledu District in Haidong City, Qinghai Province
Evaluation of landslide susceptibility at Guilin City, Guangxi Zhuang Autonomous Region based on hyperparameter optimization and shapely additive explanations
Landslide susceptibility evaluation and driving force analysis for Jiuzhaigou scenic area based on explainable machine learning
Relationships Between Land Use of Different Farmers and Elements of Land Property一A Case Study of Gaoxigou Village in Mizhi County of Shaanxi Province
Characteristics of wind-sand environment and gully entering process in Shajiawan small watershed in middle reaches of Yellow River
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