基于参数化和非参数化法的棉花生物量高光谱遥感估算

周萌,韩晓旭,郑恒彪,程涛,田永超,朱艳,曹卫星,姚霞

Remote Sensing Estimation of Cotton Biomass Based on Parametric and Nonparametric Methods by Using Hyperspectral Reflectance

ZHOU Meng,HAN XiaoXu,ZHENG HengBiao,CHENG Tao,TIAN YongChao,ZHU Yan,CAO WeiXing,YAO Xia

表6 基于非参数建模算法的棉花生物量估测模型的建模集和预测集结果

Table 6 Calibration and validation results of estimation models for cotton biomass based on non-parametric modeling algorithms

方法 Methods 吐絮前Before boll opening 吐絮后After boll opening 建模集Modeling 预测集Predicting 建模集Modeling 预测集Predicting R2 RMSE (g·m-2) R2 RMSE(g·m-2) R2 RMSE (g·m-2) R2 RMSE (g·m-2) RF 0.76 11.14 0.53 20.48 0.57 16.43 0.65 30.28 SVM 0.84 7.47 0.44 33.55 0.67 14.61 0.54 44.25 GPR 0.85 7.28 0.38 29.16 0.38 19.49 0.39 53.84 BaT 0.72 9.30 0.24 39.92 0.41 17.89 0.35 51.61 BoT 0.96 3.56 0.22 39.71 0.91 7.73 0.36 51.38 RT 0.94 5.06 0.30 40.99 0.90 9.32 0.42 54.53 PLSR 0.43 15.91 0.13 30.28 0.35 23.79 0.19 30.59 ANN 0.83 9.76 0.57 38.09 0.69 23.41 0.42 51.99