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5 基于NDSI和RSI的叶片氮含量预测模型及验证

Table 5 Modeling and verification of leaf nitrogen content based on NDSI and RSI

光谱指数 回归方程 建模(n=180) 验证(n=297) R2 RMSE RE/% R2 RMSE RE/% NDSI（567,615） y=12.042x+0.624 7 0.80 0.27 7.14 0.52 0.36 12.11 RSI（554,615） y=2.8449x-1.841 1 0.81 0.26 7.05 0.57 0.35 11.75