西南山地典型流域地震前后泥石流物源遥感精细识别
李昕娟,林家元,胡桂胜,赵伟

Remote Sensing-based Debris Flow Source Area Extraction before and after Earthquake for a Typical Mountain Basin in Southwest China:A Case Study in the Shuzheng Village Basin
Xinjuan Li,Jiayuan Lin,Guisheng Hu,Wei Zhao
表1 树正寨流域地震前后物源识别精度
Table 1 Accuracy of debris flow source recognition before and after the earthquake in the Shuzheng village basin
时间物源类别漏分误差/%错分误差/%总体精度/%Kappa系数
面向对象基于像元面向对象基于像元面向对象基于像元面向对象基于像元
震前崩滑物源015.3816.6726.6783.3373.330.660.43
沟道物源9.107.694.7642.8695.2457.140.930.51
坡面物源0017.6217.6582.3582.350.790.79
均值3.037.6913.0229.0685.7171.430.770.54
震后崩滑物源010.9913.1133.6186.8966.400.630.24
沟道物源12.008.334.3552.1795.6547.830.950.44
坡面物源016.6711.1116.6788.8983.330.880.81
均值4.0012.009.5234.1588.3465.640.760.39