Spectroscopy and Spectral Analysis, Volume. 41, Issue 9, 2657(2021)
Estimation of Potato Above Ground Biomass Based on Hyperspectral Images of UAV
Figures & Tables(10)
Fig. 2. Spectral reflectance curves treated with SNV during potato tubergrow period
Fig. 3. Correlation coefficient diagrams of COS and FDS with AGB during each growth period of potato
Fig. 4. Variable selection probabilities of COS and FDS during each growth period of potato
Fig. 5. Cross validation maps of using COS (upper) and FDS (lower) during each growth period of potato
Table 1. The sensitive wavelengths selected by CAM based on FDS and COS during each growth period
View tableView in ArticleTable 1. The sensitive wavelengths selected by CAM based on FDS and COS during each growth period
生育期 COS/nm FDS/nm 块茎形成期 458~514, 586~634 502, 506, 530~538, 542~554, 714~722 块茎增长期 458~518, 578~638 494~498, 506~518, 526~550, 718~730 淀粉积累期 458~518, 590~626, 790~802 494~506, 530~566, 594~598, 638, 718~730
Table 2. The sensitive wavelengths were selected by RFM based on FDS and COS during each growth period
View tableView in ArticleTable 2. The sensitive wavelengths were selected by RFM based on FDS and COS during each growth period
生育期 COS/nm FDS/nm 块茎形成期 462, 502, 510, 526, 558, 562, 578, 582, 634, 806, 818, 822 482~486, 506, 514, 522, 530, 542, 578, 590, 598, 630, 638, 646~650, 678, 698, 702~706, 714~718, 798, 826, 926 块茎增长期 486, 498, 514, 610~614, 648, 646, 654 486, 502, 518, 598, 610~618, 630~634, 642, 658, 666, 710, 722, 742~746, 758~762, 774, 810~814, 842~846, 882~890, 942~946 淀粉积累期 466, 478, 526~530, 542, 606~614, 630~634, 642~646, 654, 762, 822 470, 510, 518, 522~526, 558~562, 574~578, 586~590, 606~610, 618~622, 638, 646, 710, 718~722, 738, 758, 766~770, 814, 826~830, 846, 866~870, 906, 910, 922
Table 3. The sensitive wavelengths were selected by GPR-BAT based on FDS and COS during each growth period
View tableView in ArticleTable 3. The sensitive wavelengths were selected by GPR-BAT based on FDS and COS during each growth period
生育期 COS/nm FDS/nm 块茎形成期 626, 642, 778,
822, 846, 938482, 494, 526, 530, 534, 586, 602, 686, 702, 914 块茎增长期 598, 710 658, 666, 774, 782 淀粉积累期 582, 798, 822 550, 722, 726, 734, 866
Table 4. Modeling and verification accuracies of estimating AGB based on COS by PLSR and GPR
View tableView in ArticleTable 4. Modeling and verification accuracies of estimating AGB based on COS by PLSR and GPR
生育期 模型变量 PLSR GPR 建模 验证 建模 验证 R2 RMSE/
(kg·hm-2)NRMSE/
%R2 RMSE/
(kg·hm-2)NRMSE/
%R2 RMSE/
(kg·hm-2)NRMSE/
%R2 RMSE/
(kg·hm-2)NRMSE/
%CAM 0.61 240.68 19.71 0.64 191.49 18.81 0.58 259.24 21.23 0.59 209.62 20.59 块茎形成期 RFM 0.63 223.22 18.28 0.65 179.89 17.67 0.60 247.27 20.25 0.61 202.39 19.88 GPR-BAT 0.64 215.16 17.62 0.67 172.46 16.94 0.62 237.87 19.48 0.64 190.98 18.76 CAM 0.65 236.16 18.32 0.66 165.17 18.19 0.62 253.44 19.66 0.63 172.98 19.05 块茎增长期 RFM 0.68 221.21 17.16 0.70 152.82 16.83 0.64 239.38 18.57 0.66 161.27 17.76 GPR-BAT 0.71 211.03 16.37 0.72 144.47 15.91 0.67 228.30 17.71 0.68 150.65 16.59 CAM 0.58 338.80 23.35 0.60 195.14 22.62 0.55 348.96 24.05 0.57 203.68 23.61 淀粉积累期 RFM 0.61 319.65 22.03 0.63 187.55 21.74 0.59 338.22 23.31 0.60 194.19 22.51 GPR-BAT 0.62 307.31 21.18 0.64 176.51 20.46 0.61 321.82 22.18 0.62 182.55 21.16
Table 5. Modeling and verification accuracies of estimating AGB based on FDS by PLSR and GPR
View tableView in ArticleTable 5. Modeling and verification accuracies of estimating AGB based on FDS by PLSR and GPR
生育期 模型变量 PLSR GPR 建模 验证 建模 验证 R2 RMSE/
(kg·hm-2)NRMSE/
%R2 RMSE/
(kg·hm-2)NRMSE/
%R2 RMSE/
(kg·hm-2)NRMSE/
%R2 RMSE/
(kg·hm-2)NRMSE/
%CAM 0.64 233.11 19.09 0.66 182.03 17.88 0.60 250.57 20.52 0.62 200.96 19.74 块茎形成期 RFM 0.65 214.42 17.56 0.68 177.44 17.43 0.63 235.43 19.28 0.64 189.25 18.59 GPR-BAT 0.67 203.07 16.63 0.70 161.05 15.82 0.65 231.89 18.99 0.68 179.99 17.68 CAM 0.69 232.17 18.01 0.71 162.18 17.86 0.65 250.47 19.43 0.67 167.90 18.49 块茎增长期 RFM 0.71 214.89 16.67 0.72 140.47 15.47 0.68 235.26 18.25 0.69 159.18 17.53 GPR-BAT 0.73 204.19 15.84 0.75 134.66 14.83 0.69 216.95 16.83 0.72 153.55 16.91 CAM 0.61 331.55 22.85 0.63 185.74 21.53 0.57 342.14 23.58 0.59 196.52 22.78 淀粉积累期 RFM 0.64 305.72 21.07 0.66 180.48 20.92 0.61 329.66 22.72 0.63 184.96 21.44 GPR-BAT 0.65 301.95 20.81 0.67 166.15 19.26 0.62 306.30 21.11 0.64 175.56 20.35
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. Estimation of Potato Above Ground Biomass Based on Hyperspectral Images of UAV[J]. Spectroscopy and Spectral Analysis, 2021, 41(9): 2657
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Category: Research Articles
Received: Apr. 8, 2021
Accepted: --
Published Online: Oct. 29, 2021
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