基于光谱指数和偏最小二乘的棉花类胡萝卜素/叶绿素a比值估算
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易秋香,刘英,常存,钟瑞森
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Estimation of cotton Car/Chla ratio by hyperspectral vegetation indices and partial least square regression
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Qiu-Xiang YI,Ying LIU,Cun CHANG,Rui-Sen ZHONG
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表4 基于检验样本的Car/Chla比值及Car含量估算模型精度检验结果
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Table 4 Cross-validation results for the Car/Chla and Car predictive models
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尺度 Level | 方法 Method | 参数 Parameter | 决定系数 R2 | 均方根误差RMSE | 均方根误差 RMSE (%) | 斜率 a | 截距 b | 叶片尺度Leaf level | PRI | Car/Chla | 0.69 | 0.05 | 15.8 | 0.66 | 0.09 | Carotenoid | 0.44 | 3.57 | 24.9 | 0.37 | 7.71 | PLSR | Car/Chla | 0.87 | 0.03 | 10.7 | 0.83 | 0.04 | Carotenoid | 0.73 | 2.39 | 16.7 | 0.67 | 4.02 | 冠层尺度Canopy level | PRI | Car/Chla | 0.67 | 0.05 | 15.3 | 0.67 | 0.09 | Carotenoid | 0.36 | 3.62 | 24.9 | 0.37 | 8.74 | PLSR | Car/Chla | 0.84 | 0.03 | 10.1 | 0.84 | 0.05 | Carotenoid | 0.74 | 2.19 | 14.9 | 0.72 | 3.87 |
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