Fig. 1. Average spectral curves of 11 different alpine meadow poisonous plants

Fig. 2. The average first-order differential spectrum curve of 11 different alpine meadow poisonous plants

Fig. 3. Kendall correlation matrix
Note: The graph is divided into two parts, the upper triangle is the significance test, the lower triangle is the correlation coefficient, the asterisk in the figure represents the significance test, * means the difference is significant, no * means the difference is not significant, *p≤ 0.01

Fig. 4. Sorting of 16 spectral feature variables
(a): The cumulative percentage of typical variables; (b): The standardized score coefficient

Fig. 5. Classification accuracy of 16 spectral variables in 5 algorithms

Table 1. 11 poisonous plants and their characteristics

Table 2. Definition of spectral characteristic variables

Table 3. Classification accuracy based on typical discriminant analysis