基于变点分析法提取废弃采石场地形起伏度的方法  

Method for Extraction of Relief Amplitude of Abandoned Quarry Based on Change Point Method

作　　者：刘育成[1] 赵廷宁[2] 

机构地区：[1]大连工业大学,辽宁大连116034 [2]北京林业大学水土保持与荒漠化防治教育部重点实验室,北京100083

出　　处：《水土保持研究》2016年第3期269-273,共5页Research of Soil and Water Conservation

基　　金：林业公益性行业科研专项"建设工程损毁林地植被修复关键技术研究与示范"(200904030);大连工业大学青年基金(QNJJ-201423)

摘　　要：地形起伏度是废弃采石场水土保持治理和生态重建的重要地形指标之一。以0.5m,0.7m,1m,1.5m等12种不同水平分辨率DEM为数据源,采用GIS的窗口递增分析法和均值变点分析法对12种不同分辨率DEM的地形起伏度的最佳分析窗口进行了分析。结果表明:12种不同分辨率的最佳分析窗口都是为9×9网格,相应地提取地形起伏度的最佳统计面积与其相应的水平分辨率关系比较密切,呈幂函数的关系。以0.5m水平分辨率的DEM数据提取地形起伏度的最佳分析窗口面积为20.25m^2,并计算出大于5m地形起伏度的区域占总面积的13.12%。均值变点分析法确定地形起伏度也同样适用于废弃采石场的地形分析。The relief amplitude of abandoned quarry is one of the important terrain indexes of soil and water conservation management and ecological restoration in mining area.Twelve different levels of DEMs such as 0.5m,0.7m,1.0m,1.5mand so on,were taken as the data sources.GIS′s grid window increment analysis method and change point method were used for the analysis of the twelve different levels of DEMs to extract relief amplitude.The results showed that the optimum statistical unit was 9×9grid.The relationship between the optimum statistical unit area of the relief amplitude and the corresponding resolution was relatively close,which could be described by apower function.The optimum statistical unit area of 0.5mDEM relief amplitude was 20.25m-2.The relief amplitude greater than 5maccounted for 13.12% of the total area.The change point method was used to determine the optimum statistical unit of the relief amplitude,which is also applicable to the terrain analysis of the abandoned quarry.

关 键 词：废弃采石场 DEM 地形起伏度 最佳统计单元 

分 类 号：TD88[矿业工程—矿山开采]