摘要
为有效防治福建省地质灾害,减少地质灾害的发生及破坏,本文基于2010年、2015年和2020年的福建省地质灾害数据,运用GIS叠加分析方法,定量分析福建省地质灾害在地形地貌、岩石岩性、土地利用类型、水系、路网等不同情况下的时空分布特征.研究结果表明:(1)福建省地质灾害数量呈逐年下降趋势,且多分布于龙岩市、南平市、宁德市.(2)研究期内福建省地质灾害主要分布于高丘、低山、坡度较低、坡向偏东北的区域;不同年份地质灾害密度在岩石岩性上的分布大相径庭.(3)地质灾害多分布于灌木林、建筑用地和裸地,以及路网和水系沿线等人类工程活动较为强烈的区域.
Abstract
In order to effectively prevent and control geological disasters,reduce the occurrence and damage of geological hazards in Fujian province,based on the geological disasters data of Fujian province in 2010,2015 and 2020,the article uses GIS overlay analysis method to quantitatively analyze the spatiotemporal distribution characteristic of geological hazards in Fujian province under different conditions such as topography,rock lithology,land use type,water system,road network,etc.The results showed that:(1)The number of geological disasters in Fujian province was declining year by year,and they were mainly distributed in LongYan,NanPing and NingDe.(2)During the study period,geological disasters in Fujian province were mainly distributed in high hills,low mountains,low slopes and northeast areas..The distribution of geological hazard density on rock lithology varied greatly in different years.(3)Geological hazards are mostly distributed in shrub forests,construction land and bare land,and areas with strong human engineering activities such as road networks and water systems.
基金项目
广西自然科学基金(2020GXNSFAA159065)
NETL
NSTL
维普
万方数据