To unveil the spatial patterns and susceptibility trends of debris flows in the Yellow River Basin in Qinghai Province,an information value coupling with Geodetector(Geo-IM)was employed to quantify the spatial explanatory power of disaster-inducing factors and the susceptibility of debris flows in the study area under different extreme rainfall scenarios.The result show that sediment connectivity,the number of days with＞10 mm rainfall,maximum rainfall in three consecutive days,and lithology are critical factors determining the spatial patterns of debris flows.In the current scenario,areas with extremely high and high susceptibility to debris flows are primarily concentrated in the steep mountainous regions of the northeast and central parts.Under extreme rainfall scenarios,newly added areas with extremely high and high susceptibility are mainly concentrated in the northern and southern mountainous regions,as well as on both sides of the Aemye Ma-chhen Range in the central area.The research results can provide a reference for disaster prevention and reduction efforts related to debris flows in this region.
关键词
泥石流易发性/极端降雨/地理探测器/信息量模型/青海黄河流域
Key words
debris flow susceptibility/extreme rainfall/Geodetector/information value model/the Yellow River basin of Qinghai
维普
万方数据