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使用机器学习和灾难理论,在相连的贫困地区绘制滑坡易感性地图的新框架
Wei Zhou1, Yingzhi Zhou2,3, Shuneng Liang4
1The Fourth Geological Brigade of Jiangxi Geological Bureau, Pingxiang, 337000, China.
Scientific reports
|March 28, 2025
概括
这项研究使用随机森林 (RF),支持矢量机器 (SVM) 和灾难理论 (CT) 增强了滑坡易感性绘图 (LSM). 集成的RF-CT和SVM-CT模型显著提高了防灾准确性,在四川的梁山.
科学领域:
- 地质科学 地质科学
- 环境科学 环境科学
- 灾害管理 灾害管理
背景情况:
- 滑坡带来了重大的全球风险,需要准确的滑坡易感性测绘 (LSM) 以有效预防灾害.
- 像山,四川这样的贫困地区特别容易受到地质灾害的影响,需要定制的风险评估策略.
研究的目的:
- 开发和评估一个新的LSM框架,整合随机森林 (RF),支持矢量机 (SVM) 和灾难理论 (CT).
- 利用拟议的综合模型,评估四川梁山贫困地区的山体滑坡易感性.
- 提高LSM的准确性和可靠性,以改善灾害预防和可持续发展.
主要方法:
- 选择了12个因子,代表内部环境和外部触发条件的土地滑坡易感性.
- 应用频率比方法来将历史的山体滑坡与所选因素相关联.
- 将灾难理论 (CT) 与射频和SVM模型集成,为LSM创建射频-CT和SVM-CT框架.
- 使用接收器操作特征 (ROC) 曲线分析评估模型性能.
主要成果:
- 与单个RF和SVM模型相比,集成的RF-CT和SVM-CT模型显示出更高的性能.
- 射频CT的成功率为0.899,预测率为0.783.
- SVM-CT的成功率为0.873,预测率为0.775,显示了显著的改进.
- 两种综合模型都显示,成功率大约提高了10%,预测率提高了5%.
结论:
- 新的RF-CT和SVM-CT框架提供了一个更准确,更可靠的方法来绘制山体滑坡易感性的地图.
- 这些发现为防范灾害,减轻贫困和规划四川梁山的可持续发展提供了有价值的数据.
- 这种综合方法可以适应全球类似脆弱地区的山体滑坡风险评估.
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