Spectroscopy and Spectral Analysis, Volume. 42, Issue 4, 1076(2022)
Research on Classification Method of Main Poisonous Plants in Alpine Meadow Based on Spectral Characteristic Variables
Figures & Tables(8)
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, *
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
View tableView in ArticleTable 1. 11 poisonous plants and their characteristics
毒草名 毒草化学成分 部位 类型代表 黄花棘豆(Oxytropis ochrocephala) 吲哚兹定生物碱 全株有毒 OO 宽苞棘豆(O latibracteata) 吲哚兹定生物碱 全株有毒 OL 多枝黄芪(Astragalus polycladus) 吲哚兹定生物碱 全株有毒 AP 长毛风毛菊(Saussurea hieracioides) 倍半萜 全草有毒 SH 黄帚橐吾(Ligularia virgaurea) 倍半萜 全草有毒 LV 乳白香青(Anaphalis lactea) 倍半萜 全草有毒 AL 葵花大蓟(Cirsium souliei) 倍半萜 全草有毒 CS 瑞香狼毒(Stellera chamaejasme) 黄酮类、 萜类、 本质素类 全株有毒 SC 密花香薷(Elsholtzia densa) 黄酮类化合物 全草有毒 ED 露蕊乌头(Aconitum gymnandrum) 生物碱 全草有毒, 块根剧毒 AG 碎米蕨叶马先蒿(Pedicularis cheilanrthifolia) 甾体或三萜类、 生物碱、 黄酮、 强心苷 全草有毒 PC
Table 2. Definition of spectral characteristic variables
View tableView in ArticleTable 2. Definition of spectral characteristic variables
参数类型 参数 符号 定义 位置变量 红边幅值 Mre 在红边680~760 nm内一阶微分最大值 红边位置 Lre 红边幅值对应波长 红谷幅值 Mr 红光范围内640~680 nm最大反射率 红谷位置 Lr 红光范围内640~680 nm红谷对应波长 绿峰幅值 Mg 绿光范围内510~560 nm最大反射率 绿峰位置 Lg 绿光范围内510~560 nm绿峰对应的波长 蓝边幅值 Mb 在蓝边490~530 nm内一阶微分最大值 蓝边位置 Lb 蓝边幅值对应的波长 黄边幅值 My 在黄边560~640 nm内一阶微分最大值 黄边位置 Ly 黄边幅值对应的波长 面积变量 红边面积 Are 红边范围内一阶微分值总和 蓝边面积 Ab 蓝边范围内一阶微分值总和 植被指数变量 Mg/Mr RVI1 绿峰与红谷幅值比值 Are/Ab RVI2 红边与蓝边面积比值 (Mg-Mr)/(Mg+Mr) NDVI1 绿峰与红谷幅值归一化比值 (Are-Ab)/(Are+Ab) NDVI2 红边与蓝边面积归一化比值
Table 3. Classification accuracy based on typical discriminant analysis
View tableView in ArticleTable 3. Classification accuracy based on typical discriminant analysis
毒草种类 AP OO LV OL SC AG ED AL PC SH CS 样本 生产者精度/% AP 50 50 100 OO 35 13 1 1 50 70 LV 4 38 6 2 50 76 OL 4 46 50 92 SC 50 50 100 AG 4 1 45 50 90 ED 2 1 45 48 93.75 AL 50 50 100 PC 49 1 50 98 SH 1 49 50 98 CS 1 49 50 98 分类总和 56 39 39 61 50 47 51 50 51 51 49 用户精度/% 89.28 89.74 97.43 75.41 100 95.74 88.24 100 96.08 96.08 100
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Rui DONG, Zhuang-sheng TANG, Rui HUA, Xin-cheng CAI, Dar-han BAO, Bin CHU, Yuan-yuan HAO, Li-min HUA. Research on Classification Method of Main Poisonous Plants in Alpine Meadow Based on Spectral Characteristic Variables[J]. Spectroscopy and Spectral Analysis, 2022, 42(4): 1076
Paper Information
Category: Research Articles
Received: May. 22, 2021
Accepted: --
Published Online: Jul. 25, 2023
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