Landslide hazard mapping is essential for regional landslide hazard management.The main objective of this study is to construct a rainfall-induced landslide hazard map of Luhe County,China based on an automated machin...Landslide hazard mapping is essential for regional landslide hazard management.The main objective of this study is to construct a rainfall-induced landslide hazard map of Luhe County,China based on an automated machine learning framework(AutoGluon).A total of 2241 landslides were identified from satellite images before and after the rainfall event,and 10 impact factors including elevation,slope,aspect,normalized difference vegetation index(NDVI),topographic wetness index(TWI),lithology,land cover,distance to roads,distance to rivers,and rainfall were selected as indicators.The WeightedEnsemble model,which is an ensemble of 13 basic machine learning models weighted together,was used to output the landslide hazard assessment results.The results indicate that landslides mainly occurred in the central part of the study area,especially in Hetian and Shanghu.Totally 102.44 s were spent to train all the models,and the ensemble model WeightedEnsemble has an Area Under the Curve(AUC)value of92.36%in the test set.In addition,14.95%of the study area was determined to be at very high hazard,with a landslide density of 12.02 per square kilometer.This study serves as a significant reference for the prevention and mitigation of geological hazards and land use planning in Luhe County.展开更多
Taking green plum Industry in Luhe County of Shanwei City in Guangdong Province as an example,this paper made a precise positioning,based on the characteristics of rural tourism resources in Yongchuan Township,took th...Taking green plum Industry in Luhe County of Shanwei City in Guangdong Province as an example,this paper made a precise positioning,based on the characteristics of rural tourism resources in Yongchuan Township,took the current situation as the guide and improving the tourism function as the carrier,made an innovation of the rural tourism industry system,in order to improve the quality of rural tourism development,and realize the strategic goal of rural revitalization.展开更多
基金supported by the State Administration of Science,Technology and Industry for National Defence,PRC(KJSP2020020303)the National Institute of Natural Hazards,Ministry of Emergency Management of China(ZDJ2021-12)。
文摘Landslide hazard mapping is essential for regional landslide hazard management.The main objective of this study is to construct a rainfall-induced landslide hazard map of Luhe County,China based on an automated machine learning framework(AutoGluon).A total of 2241 landslides were identified from satellite images before and after the rainfall event,and 10 impact factors including elevation,slope,aspect,normalized difference vegetation index(NDVI),topographic wetness index(TWI),lithology,land cover,distance to roads,distance to rivers,and rainfall were selected as indicators.The WeightedEnsemble model,which is an ensemble of 13 basic machine learning models weighted together,was used to output the landslide hazard assessment results.The results indicate that landslides mainly occurred in the central part of the study area,especially in Hetian and Shanghu.Totally 102.44 s were spent to train all the models,and the ensemble model WeightedEnsemble has an Area Under the Curve(AUC)value of92.36%in the test set.In addition,14.95%of the study area was determined to be at very high hazard,with a landslide density of 12.02 per square kilometer.This study serves as a significant reference for the prevention and mitigation of geological hazards and land use planning in Luhe County.
基金Supported by Guangdong Students’Platform for Innovation and Entrepreneurship Training Program"Discussion of the Long-term Mechanism of Industrial Poverty Alleviation from the Perspective of Industrial Value Chain:Taking Green Plum Township of Luhe County as an Example"(S202113714021X)。
文摘Taking green plum Industry in Luhe County of Shanwei City in Guangdong Province as an example,this paper made a precise positioning,based on the characteristics of rural tourism resources in Yongchuan Township,took the current situation as the guide and improving the tourism function as the carrier,made an innovation of the rural tourism industry system,in order to improve the quality of rural tourism development,and realize the strategic goal of rural revitalization.