反距离加权法在区域滑坡危险性评价中的应用  

Application of Inverse Distance Weighted Method to Regional Landslide Hazards Assessment

作　　者：朱吉祥[1] 张礼中[1] 周小元[1] 梁国玲[1] 王乾[1] 蔡子昭[1] 

机构地区：[1]中国地质科学院水文地质环境地质研究所,河北石家庄050803

出　　处：《水土保持通报》2012年第3期136-140,共5页Bulletin of Soil and Water Conservation

基　　金：中国地质调查局"全国主要城市环境地质综合评价"(1212010535501);国家973重点基础研究计划项目"华北平原地下水演变机制与调控"(2010CB428800)

摘　　要：区域滑坡危险性评价是进行区域滑坡风险性研究的基础。提出了一种基于反距离加权的"黑箱"式评价方法,该方法将滑坡作为一个系统进行分析,各影响因素作为滑坡系统中的子系统。根据相似相近的原理,假设已有滑坡点对周围区域的滑坡危险性存在局部性影响,利用反距离加权法对所有滑坡点进行分析评价,以获取研究区的滑坡危险性评价结果。同时对该方法运用于区域滑坡危险性评价的理论基础、适用范围进行分析,并以四川省苍溪县为例,验证了运用该方法进行区域滑坡危险性评价的可行性。Regional landslide hazards assessment is the basis of the research on regional landslide hazard risk.A ＂black box＂ method is proposed based on inverse distance weighted interpolation（IDW） theory considering landslide as a system and the factors as subsystems.This approach hypothesizes that existing landslides have local influences on the landslide risk to their surrounding areas according to the principle that the more closed the distance of the things is,the more similar the characters of them are;it obtains the result of regional landslide hazard assessment by analyzing all the landslides with the IDW theory;and simultaneously,it analyzes the basis of theory why the IDW theory can be applied in regional landslide hazards assessment and the scope of its application.Finally,the feasibility of IDW Interpolation theory in regional landslide hazards assessment is verified by taking Cangxi County of Sichuan Province for an example.

关 键 词：GIS 滑坡 危险性评价 反距离加权法 苍溪县 

分 类 号：X43[环境科学与工程—灾害防治]