Spatial Distribution Pattern of Hidden Geological Hazards in Guangdong Province
CHAO Zihao
WANG Bin
ZHANG Wei
Abstract：Guangdong is one of the provinces with serious and frequent geological hazards in China.Research on the spatial distribution pattern of hidden geological hazards based on Geographic Information System(GIS)can ob-tain some spatial information of hidden geological hazards in Guangdong,such as the spatial heterogeneity and spa-tial autocorrelation,so as to support the identification and prevention of geological hazards in Guangdong.This pa-per analyzed the spatial distribution pattern of hidden geological hazards in Guangdong comprehensively from five aspects,including quantity,time,density,cluster,and topography,by using diverse spatial statistics and analysis methods of GIS and years of hidden geological hazard point data in Guangdong.The results show that col-lapse and landslide are the major geological hazards in Guangdong.Mountainous areas in northern Guangdong have the most frequent geological hazards.The number of the hidden geological hazard points in Meizhou is the largest,while the hidden geological hazards in Heyuan has the greatest threats.There are more hidden geological hazards in the first half of the year,and June and August have the highest incidence.The density of the hidden geological haz-ards in the east of Guangdong is much higher than those in other regions,and the hidden geological hazards pres-ent a high-high clustering pattern in northeast Guangdong.The section with an elevation of 0-200 m,a slope of 10°-20°,a southward aspect is most prone to collapse and landslide.
Keywords：Hidden geological hazardsSpatial distribution patternSpatial analysis
Publication Date：2024-09-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 71-80 )