基于Ripley'K函数的延吉市区崩塌地质灾害空间格局研究

Research on Spatial Pattern of Rockslide Geological Disaster for Yanji Area Based on Ripley's K( d) Function

崩塌是较为严重的一种地质灾害,研究崩塌体的空间格局有利于政府部门对其做出防治决策。本文基于最新时相的延吉市区高分1号遥感影像,从崩塌地质灾害成灾机理的角度,选取了如植被指数、土壤亮度指数、坡度等主要指标,并结合了前人对崩塌影像光谱特征的研究成果,建立了本次的自动化解译模型,在成功提取崩塌体后,经过栅矢数据转换,选用ArcGIS 10软件的K函数分析模块,进行了崩塌灾点的空间格局分析。

Rockslide is a kind of serious geological disasters. Researching on rockslide＇s spatial pattern is advantage to government make strategic for its control. The paper was created an automatic extraction by some indicators ： vegetatation index, soil brightness in- dex, slop etc. , based on rockslide mechanism and other existing researches. Using raster to vector module of Envi4.8 software after successful extracting rockslide -body, and to receive spatial pattern of rockslide by using ArcGIS10 software＇s K function.