摘要
基于广西地质灾害管理信息系统中的泥石流地质灾害数据与地质资料,综合选取高程、坡度、坡向、地形起伏度、降雨、断裂、岩性、人类活动8个因子,运用地理探测器的方法剖析了广西泥石流地质灾害空间格局与相关影响因子之间的关系。研究结果表明:1)广西的泥石流灾害具有空间分异性,由西向东依次表现为低聚集、高聚集、低聚集的模式;2)地理探测器显示广西泥石流灾害的发生是高程、坡度、坡向、地形起伏度、降雨、断裂、岩性、人类活动8个因子共同作用的结果;3)研究区泥石流灾害影响因子交互作用的解释力均大于单因子作用的解释力,大部分因子交互作用结果显示为非线性增强。
Based on the data and geological data of debris flow in Guangxi Geological Disaster Management Information System, eight factors, such as elevation, slope, slope direction, topographic fluctuation, rainfall, fracture, lithology and human activity, are comprehensively selected. The relationship between spatial pattern of geological disaster and relative impacting factors is analyzed by geographic detector method in Guangxi. The results show that:(1) the debris flow disaster in Guangxi has spatial heterogeneity, which shows the pattern of low aggregation, high aggregation and low aggregation from west to east;(2) the geographical detector shows that the occurrence of debris flow disaster in Guangxi is the result of the combination of elevation, slope, slope direction, topographic fluctuation, rainfall, fracture, lithology and human activity;(3) the explanatory power of the interaction factors of debris flow disaster impact factors in the study area is larger than that of single action, and most of the results show nonlinear enhancement.
作者
周金
范秋雁
朱真
ZHOU Jin;FAN Qiuyan;ZHU Zhen(College of Resources,Environment and Materials,Guangxi University,Nanning 530004,China;Guangxi Geological Environment Monitoring Station,Nanning 530022,China)
出处
《测绘与空间地理信息》
2022年第11期245-248,共4页
Geomatics & Spatial Information Technology
关键词
广西
泥石流灾害
影响因子
地理探测器
Guangxi
debris flow disaster
impact factor
geographic detector
