摘要
研究基于地质灾害灾情数据,运用全局空间自相关模型和标准差椭圆模型等方法,结合ArcGIS软件,对2013~2022年中国黄河流域地质灾害的时空分布特征、空间关联特征及重心迁移轨迹进行了系统分析。研究结果表明:黄河流域地质灾害的发生频次总体呈波动性下降趋势,空间分布上表现出“南多北少、西多东少”的特征;特定年份内,地质灾害发生频次具有显著的空间关联性,其中甘肃、青海和四川地区为地质灾害高发区。
Based on the geological disaster situation data,this study systematically analyzed the spatiotemporal distribution characteristics,spatial correlation characteristics,and trajectory of gravity center migration of geological disasters in the Yellow River Basin of China from 2013 to 2022.It employed methods including the global spatial autocorrelation model and the standard deviational ellipse model,with the support of ArcGIS software.The results show that the frequency of geological disasters in the Yellow River Basin generally shows a fluctuating decreasing trend,and its spatial distribution is characterized by"more in the south than in the north,and more in the west than in the east".In specific years,the frequency of geological disasters has significant spatial correlation,among which Gansu,Qinghai and Sichuan provinces are high-incidence areas of geological disasters.
作者
王健康
Wang Jiankang(Department of Geographical Science,Anshan Normal University,Anshan,Liaoning,114007,China)
出处
《化工矿产地质》
2025年第4期342-347,共6页
Geology of Chemical Minerals
关键词
地质灾害
时空分布
空间关联特征
重心迁移轨迹
黄河流域
Geological disasters,Spatiotemporal distribution
Spatial correlation characteristics
Trajectory of gravity center migration
Yellow River Basin
