Chin J Plant Ecol ›› 2009, Vol. 33 ›› Issue (4): 791-801.DOI: 10.3773/j.issn.1005-264x.2009.04.018
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TIAN Yong-Chao, YANG Jie, YAO Xia, ZHU Yan, CAO Wei-Xing*()
Received:
2008-12-04
Revised:
2009-03-15
Online:
2009-12-04
Published:
2009-07-30
Contact:
CAO Wei-Xing
TIAN Yong-Chao, YANG Jie, YAO Xia, ZHU Yan, CAO Wei-Xing. ESTIMATION OF LEAF CANOPY NITROGEN CONCENTRATION WITH RED EDGE AREA SHAPE PARAMETER IN RICE[J]. Chin J Plant Ecol, 2009, 33(4): 791-801.
试验和年份 Experiment & year | 品种 Cultivar | 施氮水平 Nitrogen rate (kg N·hm-2) | 小区面积 Plot area | 采样日期 Sampling date (month / day) | 数据用途 Data using | |
---|---|---|---|---|---|---|
试验1 Exp.1 | 2004 | ‘武香粳9号’ WXJ 9 | 0, 105, 210, 315 | 18 m2 (4 m×4.5 m) | 9/2, 9/12, 9/23, 9/30,10/12 | 模型检验 Model validation |
‘华粳2号’ HJ 2 | 8/27, 9/2, 9/11, 9/23, 9/30 | |||||
‘日本晴’ NPB | 8/27, 9/2, 9/11, 9/23 | |||||
试验2 Exp.2 | 2005 | ‘武香粳14号’ WXJ 14 | 0, 90, 270, 420 | 31.5 m2 (3.5 m×9 m) | 7/15, 8/9, 8/16, 9/5, 9/13, 9/29, 10/10,10/23 | 建模 Model calibration |
27123 | ||||||
试验3 Exp.3 | 2006 | ‘武香粳14号’ WXJ 14 | 0, 90, 270, 405 | 25 m2 (5.0 m×5.0 m) | 7/28, 8/9, 8/18, 9/7, 9/17, 9/25, 10/5 | 建模 Model calibration |
‘27123’ | ||||||
试验4 Exp.4 | 2006 | ‘盐粳9967’ YJ 9967 | 0, 105, 210, 315, 420 | 8 100 m2 (90 m×90 m) | 7/29, 9/10 | 模型检验 Model validation |
试验5 Exp.5 | 2007 | ‘扬辐粳8号’ YFJ 8 | 0, 210, 420 | 8 100 m2 (90 m×90 m) | 9/8, 10/9 | 模型检验 Model validation |
Table 1 Seasons, cultivars, nitrogen rates and sampling dates in five field experiments
试验和年份 Experiment & year | 品种 Cultivar | 施氮水平 Nitrogen rate (kg N·hm-2) | 小区面积 Plot area | 采样日期 Sampling date (month / day) | 数据用途 Data using | |
---|---|---|---|---|---|---|
试验1 Exp.1 | 2004 | ‘武香粳9号’ WXJ 9 | 0, 105, 210, 315 | 18 m2 (4 m×4.5 m) | 9/2, 9/12, 9/23, 9/30,10/12 | 模型检验 Model validation |
‘华粳2号’ HJ 2 | 8/27, 9/2, 9/11, 9/23, 9/30 | |||||
‘日本晴’ NPB | 8/27, 9/2, 9/11, 9/23 | |||||
试验2 Exp.2 | 2005 | ‘武香粳14号’ WXJ 14 | 0, 90, 270, 420 | 31.5 m2 (3.5 m×9 m) | 7/15, 8/9, 8/16, 9/5, 9/13, 9/29, 10/10,10/23 | 建模 Model calibration |
27123 | ||||||
试验3 Exp.3 | 2006 | ‘武香粳14号’ WXJ 14 | 0, 90, 270, 405 | 25 m2 (5.0 m×5.0 m) | 7/28, 8/9, 8/18, 9/7, 9/17, 9/25, 10/5 | 建模 Model calibration |
‘27123’ | ||||||
试验4 Exp.4 | 2006 | ‘盐粳9967’ YJ 9967 | 0, 105, 210, 315, 420 | 8 100 m2 (90 m×90 m) | 7/29, 9/10 | 模型检验 Model validation |
试验5 Exp.5 | 2007 | ‘扬辐粳8号’ YFJ 8 | 0, 210, 420 | 8 100 m2 (90 m×90 m) | 9/8, 10/9 | 模型检验 Model validation |
红边面积参数 Red edge area index | 算法 Algorithm | 文献出处 Reference |
---|---|---|
625~795 nm 波段范围一阶导数光谱面积 Sum of FD between 625 and 795 nm | R795-R625 | Elvidge & Chen, 1995 |
680~780 nm 波段范围一阶导数光谱面积 Sum of FD between 680 and 780 nm | R780-R680 | Filella & Pennelas, 1994 |
红边与红谷面积比值 Ratio of red edge to red vale | Ared edge/Ared vale | Maccioni et al. 2001 |
双差指数 DD | (R(a+Δ) -Ra)- (R(b+Δ)-Rb) | Maire et al. 2004 |
归一化双峰指数 NDPS (Aa-b, Ac-d) | $\frac{\left(R_{a}-R_{b}\right)-\left(R_{c}-R_{d}\right)}{\left(R_{a}-R_{b}\right)+\left(R_{c}-R_{d}\right)}$ | The present study |
双峰对称度 DPS (Aa-b, Ac-d) | (Ra-Rb) / (Rc-Rd) | The present study |
Table 2 Algorithm and references of different spectral area indices
红边面积参数 Red edge area index | 算法 Algorithm | 文献出处 Reference |
---|---|---|
625~795 nm 波段范围一阶导数光谱面积 Sum of FD between 625 and 795 nm | R795-R625 | Elvidge & Chen, 1995 |
680~780 nm 波段范围一阶导数光谱面积 Sum of FD between 680 and 780 nm | R780-R680 | Filella & Pennelas, 1994 |
红边与红谷面积比值 Ratio of red edge to red vale | Ared edge/Ared vale | Maccioni et al. 2001 |
双差指数 DD | (R(a+Δ) -Ra)- (R(b+Δ)-Rb) | Maire et al. 2004 |
归一化双峰指数 NDPS (Aa-b, Ac-d) | $\frac{\left(R_{a}-R_{b}\right)-\left(R_{c}-R_{d}\right)}{\left(R_{a}-R_{b}\right)+\left(R_{c}-R_{d}\right)}$ | The present study |
双峰对称度 DPS (Aa-b, Ac-d) | (Ra-Rb) / (Rc-Rd) | The present study |
Fig. 2 Characteristics of first-derivative spectra in red edge area under different nitrogen levels (A) and rice varieties (B) and leaf area indices (LAI) (C)
参数 Parameter | 模型形式 Model type | R2 | 根均方差 RMSE (%) | 平均相对误差 RE |
---|---|---|---|---|
DPS (A730-755, A675-700) | 直线 Linear | 0.76 | 14.00 | 0.11 |
曲线 Curve | 0.81 | 10.11 | 0.09 | |
DD (A730-755, A675-700) | 直线 Linear | 0.72 | 19.82 | 0.15 |
NDPS (A730-755, A675-700) | 直线 Linear | 0.80 | 10.00 | 0.09 |
DPS (A675-700, A700-755) | 直线 Linear | 0.78 | 12.10 | 0.11 |
曲线 Curve | 0.82 | 10.26 | 0.09 | |
DD (A675-700, A700-755) | 直线 Linear | 0.58 | 23.63 | 0.19 |
NDPS (A675-700, A700-755) | 直线 Linear | 0.80 | 10.51 | 0.09 |
曲线 Curve | 0.81 | 9.95 | 0.09 | |
DPS (A675-730, A730-755) | 曲线 Curve | 0.77 | 10.40 | 0.09 |
DD (A675-730, A730-755) | 直线 Linear | 0.59 | 22.08 | 0.16 |
NDPS (A675-730, A730-755) | 直线 Linear | 0.77 | 11.13 | 0.10 |
DPS (A675-720, A720-755) | 曲线 Curve | 0.79 | 10.78 | 0.14 |
DD (A675-720, A720-755) | 直线 Linear | 0.74 | 18.10 | 0.09 |
NDPS (A675-720, A720-755) | 直线 Linear | 0.79 | 10.23 | 0.09 |
DPS (A720-730, A700-720) | 直线 Linear | 0.77 | 11.24 | 0.10 |
DPS1 (A700-720, A700-730) | 直线 Linear | 0.77 | 10.60 | 0.09 |
DD (A720-730, A700-720) | 直线 Linear | 0.49 | 25.22 | 0.18 |
NDPS (A720-730, A700-720) | 直线 Linear | 0.77 | 10.60 | 0.09 |
DPS (A675-720, A675-755) | 直线 Linear | 0.79 | 11.19 | 0.10 |
DPS (A675-730, A675-755) | 直线 Linear | 0.77 | 10.51 | 0.09 |
DPS (A675-700, A675-755) | 直线 Linear | 0.80 | 10.51 | 0.09 |
曲线 Curve | 0.81 | 9.95 | 0.09 | |
Ared edge/Ared vale | 曲线 Curve | 0.54 | 13.54 | 0.12 |
R795-R625 | 直线 Linear | 0.39 | 23.59 | 0.19 |
R780-R680 | 直线 Linear | 0.41 | 23.94 | 0.20 |
Table 4 Validation results of leaf canopy nitrogen concentration monitoring models based on different red edge area shape parameters in Oryza sativa (n=251)
参数 Parameter | 模型形式 Model type | R2 | 根均方差 RMSE (%) | 平均相对误差 RE |
---|---|---|---|---|
DPS (A730-755, A675-700) | 直线 Linear | 0.76 | 14.00 | 0.11 |
曲线 Curve | 0.81 | 10.11 | 0.09 | |
DD (A730-755, A675-700) | 直线 Linear | 0.72 | 19.82 | 0.15 |
NDPS (A730-755, A675-700) | 直线 Linear | 0.80 | 10.00 | 0.09 |
DPS (A675-700, A700-755) | 直线 Linear | 0.78 | 12.10 | 0.11 |
曲线 Curve | 0.82 | 10.26 | 0.09 | |
DD (A675-700, A700-755) | 直线 Linear | 0.58 | 23.63 | 0.19 |
NDPS (A675-700, A700-755) | 直线 Linear | 0.80 | 10.51 | 0.09 |
曲线 Curve | 0.81 | 9.95 | 0.09 | |
DPS (A675-730, A730-755) | 曲线 Curve | 0.77 | 10.40 | 0.09 |
DD (A675-730, A730-755) | 直线 Linear | 0.59 | 22.08 | 0.16 |
NDPS (A675-730, A730-755) | 直线 Linear | 0.77 | 11.13 | 0.10 |
DPS (A675-720, A720-755) | 曲线 Curve | 0.79 | 10.78 | 0.14 |
DD (A675-720, A720-755) | 直线 Linear | 0.74 | 18.10 | 0.09 |
NDPS (A675-720, A720-755) | 直线 Linear | 0.79 | 10.23 | 0.09 |
DPS (A720-730, A700-720) | 直线 Linear | 0.77 | 11.24 | 0.10 |
DPS1 (A700-720, A700-730) | 直线 Linear | 0.77 | 10.60 | 0.09 |
DD (A720-730, A700-720) | 直线 Linear | 0.49 | 25.22 | 0.18 |
NDPS (A720-730, A700-720) | 直线 Linear | 0.77 | 10.60 | 0.09 |
DPS (A675-720, A675-755) | 直线 Linear | 0.79 | 11.19 | 0.10 |
DPS (A675-730, A675-755) | 直线 Linear | 0.77 | 10.51 | 0.09 |
DPS (A675-700, A675-755) | 直线 Linear | 0.80 | 10.51 | 0.09 |
曲线 Curve | 0.81 | 9.95 | 0.09 | |
Ared edge/Ared vale | 曲线 Curve | 0.54 | 13.54 | 0.12 |
R795-R625 | 直线 Linear | 0.39 | 23.59 | 0.19 |
R780-R680 | 直线 Linear | 0.41 | 23.94 | 0.20 |
Fig. 4 Relationships of leaf canopy nitrogen concentration to double peak symmetry (DPS) (A) and normalized difference double peak symmetry (NDPS) (B) in rice (n=312)
Fig. 3 Relationships of leaf canopy nitrogen concentration to DPS (A675-730, A675-755) (A) and DPS (A730-755, A675-700) (B) in rice (n=312)DPS: Double peak symmetry
Fig. 5 Relationships of leaf canopy nitrogen concentration to DPS (A675-720,A720-755), DPS (A675-730,A730-755) (A) and NDPS (A675-720, A720-755), NDPS (A675-730, A730-755) (B) (n=312)
Fig. 7 Comparison of measured and predicted leaf canopy nitrogen concentrations based on DPS (A675-700, A675-755) (A) and NDPS (A675-700, A700-755) (B) (n=251)
参数 Parameter | 模型形式 Model type | 拟合模型 Model | 决定系数 R2 | 预测标准误 Standard error |
---|---|---|---|---|
DPS (A730-755, A675-700) | 直线 Linear | y=0.267 2x+1.450 2 | 0.69 | 0.41 |
曲线 Curve | y=0.749 1ln(x)+1.700 6 | 0.82 | ||
DD (A730-755, A675-700) | 直线 Linear | y=12.889x+1.666 8 | 0.76 | 0.36 |
NDPS (A730-755, A675-700) | 直线 Linear | y=1.794 6x+1.702 4 | 0.81 | 0.32 |
DPS (A675-700, A700-755) | 直线 Linear | Y= -3.618x + 3.102 8 | 0.71 | 0.40 |
曲线 Curve | y= -1.022ln(x)+0.563 9 | 0.82 | ||
DD (A675-700, A700-755) | 直线 Linear | y=8.395 5x+1.028 6 | 0.64 | 0.45 |
NDPS (A675-700, A700-755) | 直线 Linear | y=3.38x+0.084 2 | 0.78 | 0.35 |
曲线 Curve | y=0.662 9e1.806 7x | 0.82 | ||
DPS (A675-730, A730-755) | 曲线 Curve | y=3.692 7e-0.244x | 0.81 | 0.39 |
DD (A675-730, A730-755) | 直线 Linear | y=15.781x+3.098 8 | 0.66 | 0.44 |
NDPS (A675-730, A730-755) | 直线 Linear | y=2.963 9x+3.16 | 0.82 | 0.32 |
DPS (A675-720, A720-755) | 曲线 Curve | y=3.494 9e-0.474x | 0.78 | 0.41 |
DD (A675-720, A720-755) | 直线 Linear | y=11.169x+1.978 9 | 0.78 | 0.35 |
NDPS (A675-720, A720-755) | 直线 Linear | y=2.443 6x+2.121 3 | 0.82 | 0.32 |
DPS (A720-730, A700-720) | 直线 Linear | y=3.747x-0.142 3 | 0.79 | 0.34 |
DPS1 (A700-720, A700-730) | 直线 Linear | y= -9.587 1x+8.170 6 | 0.79 | 0.35 |
DD (A720-730, A700-720) | 直线 Linear | y=56.323x+3.417 1 | 0.60 | 0.47 |
NDPS (A720-730, A700-720) | 直线 Linear | y=4.793 6x+3.377 1 | 0.79 | 0.35 |
DPS (A675-720, A675-755) | 直线 Linear | y= -4.887 3x+4.564 9 | 0.81 | 0.32 |
DPS (A675-730, A675-755) | 直线 Linear | y= -5.927 9x+6.124 | 0.82 | 0.32 |
DPS (A675-700, A675-755) | 直线 Linear | y= -6.759 9x+3.464 1 | 0.78 | 0.35 |
曲线 Curve | y=4.037 2e-3.613x | 0.82 | ||
Ared edge/Ared vale | 曲线 Curve | y=0.947ln(x)-1.316 4 | 0.67 | 0.38 |
R795-R625 | 直线 Linear | y=6.506 8x + 0.757 6 | 0.41 | 0.58 |
R780-R680 | 直线 Linear | y=6.396 2x + 0.754 3 | 0.38 | 0.58 |
Table 3 Relationships between leaf canopy nitrogen concentration and red edge area parameters in Oryza sativa (n=312)
参数 Parameter | 模型形式 Model type | 拟合模型 Model | 决定系数 R2 | 预测标准误 Standard error |
---|---|---|---|---|
DPS (A730-755, A675-700) | 直线 Linear | y=0.267 2x+1.450 2 | 0.69 | 0.41 |
曲线 Curve | y=0.749 1ln(x)+1.700 6 | 0.82 | ||
DD (A730-755, A675-700) | 直线 Linear | y=12.889x+1.666 8 | 0.76 | 0.36 |
NDPS (A730-755, A675-700) | 直线 Linear | y=1.794 6x+1.702 4 | 0.81 | 0.32 |
DPS (A675-700, A700-755) | 直线 Linear | Y= -3.618x + 3.102 8 | 0.71 | 0.40 |
曲线 Curve | y= -1.022ln(x)+0.563 9 | 0.82 | ||
DD (A675-700, A700-755) | 直线 Linear | y=8.395 5x+1.028 6 | 0.64 | 0.45 |
NDPS (A675-700, A700-755) | 直线 Linear | y=3.38x+0.084 2 | 0.78 | 0.35 |
曲线 Curve | y=0.662 9e1.806 7x | 0.82 | ||
DPS (A675-730, A730-755) | 曲线 Curve | y=3.692 7e-0.244x | 0.81 | 0.39 |
DD (A675-730, A730-755) | 直线 Linear | y=15.781x+3.098 8 | 0.66 | 0.44 |
NDPS (A675-730, A730-755) | 直线 Linear | y=2.963 9x+3.16 | 0.82 | 0.32 |
DPS (A675-720, A720-755) | 曲线 Curve | y=3.494 9e-0.474x | 0.78 | 0.41 |
DD (A675-720, A720-755) | 直线 Linear | y=11.169x+1.978 9 | 0.78 | 0.35 |
NDPS (A675-720, A720-755) | 直线 Linear | y=2.443 6x+2.121 3 | 0.82 | 0.32 |
DPS (A720-730, A700-720) | 直线 Linear | y=3.747x-0.142 3 | 0.79 | 0.34 |
DPS1 (A700-720, A700-730) | 直线 Linear | y= -9.587 1x+8.170 6 | 0.79 | 0.35 |
DD (A720-730, A700-720) | 直线 Linear | y=56.323x+3.417 1 | 0.60 | 0.47 |
NDPS (A720-730, A700-720) | 直线 Linear | y=4.793 6x+3.377 1 | 0.79 | 0.35 |
DPS (A675-720, A675-755) | 直线 Linear | y= -4.887 3x+4.564 9 | 0.81 | 0.32 |
DPS (A675-730, A675-755) | 直线 Linear | y= -5.927 9x+6.124 | 0.82 | 0.32 |
DPS (A675-700, A675-755) | 直线 Linear | y= -6.759 9x+3.464 1 | 0.78 | 0.35 |
曲线 Curve | y=4.037 2e-3.613x | 0.82 | ||
Ared edge/Ared vale | 曲线 Curve | y=0.947ln(x)-1.316 4 | 0.67 | 0.38 |
R795-R625 | 直线 Linear | y=6.506 8x + 0.757 6 | 0.41 | 0.58 |
R780-R680 | 直线 Linear | y=6.396 2x + 0.754 3 | 0.38 | 0.58 |
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