Chin J Plant Ecol ›› 2006, Vol. 30 ›› Issue (6): 983-990.DOI: 10.17521/cjpe.2006.0126
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ZHU Yan, YAO Xia, TIAN Yong-Chao, ZHOU Dong-Qin, LI Ying-Xue, CAO Wei-Xing()
Received:
2005-07-28
Accepted:
2005-12-28
Online:
2006-07-28
Published:
2006-11-30
Contact:
CAO Wei-Xing
ZHU Yan, YAO Xia, TIAN Yong-Chao, ZHOU Dong-Qin, LI Ying-Xue, CAO Wei-Xing. QUANTITATIVE RELATIONSHIP BETWEEN LEAF NITROGEN ACCUMULATION AND CANOPY REFLECTANCE SPECTRA IN RICE AND WHEAT[J]. Chin J Plant Ecol, 2006, 30(6): 983-990.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2006.0126
波段Band | 460 | 510 | 560 | 610 | 660 | 680 | 710 | 760 | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
中心波长Center wavelength (nm) | 460.4 | 511.4 | 560.9 | 610.7 | 661.7 | 682.0 | 711.4 | 761.2 | ||||||
带宽Band width (nm) | 8.3 | 8.8 | 8.7 | 9.7 | 9.4 | 11.7 | 12.4 | 9.9 | ||||||
波段Band | 810 | 870 | 950 | 1 100 | 1 220 | 1 480 | 1 500 | 1 650 | ||||||
中心波长Center wavelength (nm) | 812.6 | 871.6 | 951.2 | 1 099.5 | 1 222.8 | 1 480.2 | 1 500.2 | 1 669.0 | ||||||
带宽Band width (nm) | 11.2 | 12.6 | 10.6 | 16.3 | 11.5 | 13.1 | 15.3 | 195.0 |
Table 1 The center wavelength and band width of Cropscan
波段Band | 460 | 510 | 560 | 610 | 660 | 680 | 710 | 760 | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
中心波长Center wavelength (nm) | 460.4 | 511.4 | 560.9 | 610.7 | 661.7 | 682.0 | 711.4 | 761.2 | ||||||
带宽Band width (nm) | 8.3 | 8.8 | 8.7 | 9.7 | 9.4 | 11.7 | 12.4 | 9.9 | ||||||
波段Band | 810 | 870 | 950 | 1 100 | 1 220 | 1 480 | 1 500 | 1 650 | ||||||
中心波长Center wavelength (nm) | 812.6 | 871.6 | 951.2 | 1 099.5 | 1 222.8 | 1 480.2 | 1 500.2 | 1 669.0 | ||||||
带宽Band width (nm) | 11.2 | 12.6 | 10.6 | 16.3 | 11.5 | 13.1 | 15.3 | 195.0 |
光谱参数 Spectral parameter | 缩写 Abbreviation | 计算公式 Algorithm formula | 参考文献 Reference |
---|---|---|---|
单波段反射率 Reflectance | ρλ | ||
比值植被指数 Ratio vegetation index | RVI (λ1, λ2) | ρλ1/ρλ2 | Pearson & Miller, |
差值植被指数 Differential vegetation index | DVI (λ1, λ2) | ρλ1-ρλ2 | Jordan, |
归一化差值植被指数Normalized difference vegetation index | NDVI (λ1, λ2) | (ρλ1-ρλ2)/(ρλ1+ρλ2) | Rouse et al., |
Table 2 Algorithm of different spectral parameters
光谱参数 Spectral parameter | 缩写 Abbreviation | 计算公式 Algorithm formula | 参考文献 Reference |
---|---|---|---|
单波段反射率 Reflectance | ρλ | ||
比值植被指数 Ratio vegetation index | RVI (λ1, λ2) | ρλ1/ρλ2 | Pearson & Miller, |
差值植被指数 Differential vegetation index | DVI (λ1, λ2) | ρλ1-ρλ2 | Jordan, |
归一化差值植被指数Normalized difference vegetation index | NDVI (λ1, λ2) | (ρλ1-ρλ2)/(ρλ1+ρλ2) | Rouse et al., |
Fig.1 Canopy reflectance under different nitrogen rates at anthesis of `Huaimai 20' wheat in experiment 3 N0: 0 N1: 75 kg N·hm-2 N2: 150 kg N·hm-2 N3: 225 kg N·hm-2 N4: 300 kg N·hm-2
作物类型 Crop type | 波长 Wavelength(nm) | 回归方程 Regression equation | 决定系数 R2 |
---|---|---|---|
小麦(n=381) Wheat | 810 | y=0.250 8x-3.695 1 | 0.768 2 |
870 | y=0.253 7x-3.998 3 | 0.759 6 | |
760 | y=0.320 3x-4.926 7 | 0.753 0 | |
950 | y=0.298 7x-5.015 6 | 0.744 8 | |
1 100 | y=0.289 6x-4.865 4 | 0.729 6 | |
水稻(n=222) Rice | 660 | y=12.519x-0.854 0 | 0.495 3 |
680 | y=11.029x-0.770 6 | 0.427 1 | |
610 | y=15.025x-0.846 2 | 0.375 0 | |
810 | y=0.201 7x-1.160 9 | 0.324 2 | |
870 | y=0.185 7x-0.915 4 | 0.294 6 | |
稻麦(n=603) Wheat & rice | 810 | y=0.237 7x-2.906 8 | 0.621 3 |
870 | y=0.237 7x-3.149 7 | 0.610 7 |
Table 3 Quantitative relationships of leaf nitrogen accumulation to canopy spectral reflectance in wheat and rice
作物类型 Crop type | 波长 Wavelength(nm) | 回归方程 Regression equation | 决定系数 R2 |
---|---|---|---|
小麦(n=381) Wheat | 810 | y=0.250 8x-3.695 1 | 0.768 2 |
870 | y=0.253 7x-3.998 3 | 0.759 6 | |
760 | y=0.320 3x-4.926 7 | 0.753 0 | |
950 | y=0.298 7x-5.015 6 | 0.744 8 | |
1 100 | y=0.289 6x-4.865 4 | 0.729 6 | |
水稻(n=222) Rice | 660 | y=12.519x-0.854 0 | 0.495 3 |
680 | y=11.029x-0.770 6 | 0.427 1 | |
610 | y=15.025x-0.846 2 | 0.375 0 | |
810 | y=0.201 7x-1.160 9 | 0.324 2 | |
870 | y=0.185 7x-0.915 4 | 0.294 6 | |
稻麦(n=603) Wheat & rice | 810 | y=0.237 7x-2.906 8 | 0.621 3 |
870 | y=0.237 7x-3.149 7 | 0.610 7 |
作物类型 Crop type | 波长 Wavelength(nm) | 回归方程 Regression equation | 决定系数 R2 |
---|---|---|---|
小麦Wheat (n=381) | RVI(950,660) | y=0.413 3x0.986 3 | 0.848 7 |
RVI (1 100,660) | y=0.401 7x0.992 5 | 0.849 8 | |
RVI (870,660) | y=0.443 2x0.936 2 | 0.848 2 | |
RVI (810,660) | y=0.477 6x0.914 3 | 0.845 6 | |
RVI (760,660) | y=0.477 3x0.955 4 | 0.840 6 | |
水稻Rice (n=222) | RVI (870,660) | y=0.351 8x+1.221 8 | 0.642 5 |
RVI (810,660) | y=0.361 8x+1.265 5 | 0.641 9 | |
RVI (1 220,660) | y=0.577 1x+0.846 7 | 0.628 8 | |
RVI (870,610) | y=0.498x+0.850 5 | 0.604 1 | |
RVI (810,610) | y=0.506x+0.948 2 | 0.598 7 | |
稻麦Wheat & rice (n=603) | RVI (870,660) | y=0.493 3x0.919 8 | 0.798 8 |
RVI (810,660) | y=0.534 6x0.897 6 | 0.793 5 |
Table 4 Quantitative relationships of leaf nitrogen accumulation and canopy spectral parameters in wheat and rice
作物类型 Crop type | 波长 Wavelength(nm) | 回归方程 Regression equation | 决定系数 R2 |
---|---|---|---|
小麦Wheat (n=381) | RVI(950,660) | y=0.413 3x0.986 3 | 0.848 7 |
RVI (1 100,660) | y=0.401 7x0.992 5 | 0.849 8 | |
RVI (870,660) | y=0.443 2x0.936 2 | 0.848 2 | |
RVI (810,660) | y=0.477 6x0.914 3 | 0.845 6 | |
RVI (760,660) | y=0.477 3x0.955 4 | 0.840 6 | |
水稻Rice (n=222) | RVI (870,660) | y=0.351 8x+1.221 8 | 0.642 5 |
RVI (810,660) | y=0.361 8x+1.265 5 | 0.641 9 | |
RVI (1 220,660) | y=0.577 1x+0.846 7 | 0.628 8 | |
RVI (870,610) | y=0.498x+0.850 5 | 0.604 1 | |
RVI (810,610) | y=0.506x+0.948 2 | 0.598 7 | |
稻麦Wheat & rice (n=603) | RVI (870,660) | y=0.493 3x0.919 8 | 0.798 8 |
RVI (810,660) | y=0.534 6x0.897 6 | 0.793 5 |
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