基于全波段高光谱的冬小麦生长参数估算方法比较

纪景纯, 刘建立, 牛玉洁, 宣可凡, 蒋一飞, 邓皓东, 李晓鹏

Comparison of Estimation Methods for Growth Parameters of Winter Wheat Based on Full-Band Hyperspectral Data

Ji Jingchun, Liu Jianli, Niu Yujie, Xuan Kefan, Jiang Yifei, Deng Haodong, Li Xiaopeng

表2 PLSR、SVR和FNN模型的建模评价指标

Table 2 The evaluation indicators of PLSR, SVR and FNN model in calibration set

模型Model 生育期 Growth stage 地上部生物量 Aboveground biomass LAI 全氮含量 Total nitrogen content 叶绿素浓度 Chlorophyll concentration R2 RMSE (g/m2) MAPE (%) R2 RMSE MAPE (%) R2 RMSE (%) MAPE (%) R2 RMSE (μmol/m2) MAPE (%) PLSR 拔节期Jointing 0.90 18.61 10.58 0.93 0.13 9.43 0.90 0.12 4.96 0.91 34.51 7.03 孕穗期Booting 0.87 63.87 8.73 0.95 0.34 9.22 0.92 0.09 3.36 0.91 37.43 6.65 扬花期Anthesis 0.92 79.83 6.57 0.93 0.39 8.46 0.91 0.10 4.44 0.86 50.92 8.40 乳熟期Milk ripe 0.91 124.83 8.09 0.94 0.36 7.84 0.94 0.13 6.40 0.94 35.01 8.19 SVR 拔节期Jointing 0.92 16.31 7.53 0.95 0.11 5.46 0.98 0.05 1.70 0.94 28.02 4.93 孕穗期Booting 0.91 53.30 6.36 0.97 0.25 4.55 0.97 0.05 1.70 0.93 32.54 5.32 扬花期Anthesis 0.94 72.77 5.38 0.94 0.35 5.96 0.94 0.08 3.14 0.89 45.00 6.49 乳熟期Milk ripe 0.95 94.46 5.25 0.95 0.32 5.65 0.97 0.10 3.54 0.96 26.25 4.70 FNN 拔节期Jointing 0.93 15.37 7.58 0.96 0.10 6.03 0.97 0.06 2.13 0.96 24.50 4.45 孕穗期Booting 0.92 49.69 6.80 0.96 0.29 5.96 0.96 0.07 2.25 0.93 33.44 5.26 扬花期Anthesis 0.94 71.72 5.49 0.95 0.35 7.13 0.93 0.09 3.46 0.90 45.00 7.35 乳熟期Milk ripe 0.95 93.57 5.59 0.96 0.30 6.65 0.97 0.10 4.24 0.96 27.70 5.93