基于随机森林法的棉花叶片叶绿素含量估算

依尔夏提•阿不来提,买买提•沙吾提,白灯莎•买买提艾力,安申群,马春玥

Estimation of leaf chlorophyll content in cotton based on the random forest approach

ABLET Ershat,SAWUT Mamat,MAIMAITIAILI Baidengsha,Shen-Qun AN,Chun-Yue MA

表1 特征波段的选取

Table 1 Characteristic band selection

原始光谱RR 包络线去除光谱Rcr 变量名Variable name 特征波段Characteristic band (nm) 相关系数Correlation coefficient VIM值 VIM value 变量名Variable name 特征波段Characteristic band (nm) 相关系数Correlation coefficient VIM值 VIM value X1 614 -0.498 0.03420 X'1 407 -0.670 0.00729 X2 616 -0.520 0.00652 X'2 479 -0.681 0.00326 X3 653 -0.603 0.01130 X'3 488 -0.694 0.00326 X4 670 -0.633 0.01031 X'4 508 -0.699 0.00461 X5 689 -0.628 0.00461 X'5 577 -0.732 0.00326 X6 697 -0.544 0.01458 X'6 585 -0.750 0.00326 X7 700 -0.482 0.00652 X'7 612 -0.779 0 X8 759 0.513 0.00565 X'8 621 -0.799 0.00461 X9 786 0.516 0.00461 X'9 651 -0.793 0.00326 X10 826 0.519 0.00799 X'10 695 -0.792 0.00799 X11 905 0.529 0.00799 X'11 712 -0.760 0.00652 X12 941 0.509 0.05238 X'12 723 -0.697 0.00790