苹果叶片氮含量高光谱反演方法对比

杨福芹,冯海宽,李振海,潘洁晨,谢瑞

Comparison of Hyperspectral Remote Sensing Inversion Methods for Apple Leaf Nitrogen Content

Fuqin Yang,Haikuan Feng,Zhenhai Li,Jiechen Pan,Rui Xie

表4 基于一阶微分参数的叶片氮含量含量预测模型及验证

Table 4 Modeling and verification of chlorophyll content based on original spectrum

光谱指数 回归方程 建模(n=180) 验证(n=297) R2 RMSE RE/% R2 RMSE RE/% D527 y=1.477ln(x)+12.44 0.75 0.30 8.15 0.38 0.37 12.13 D559 y=-2 473.9x+1.068 8 0.80 0.27 7.39 0.44 0.34 10.78 D708 y=440.7x-1.342 5 0.76 0.29 8.09 0.35 0.39 12.74