Chin J Plant Ecol ›› 2008, Vol. 32 ›› Issue (3): 664-672.DOI: 10.3773/j.issn.1005-264x.2008.03.016
• Original article • Previous Articles Next Articles
JU Chang-Hua, TIAN Yong-Chao, ZHU Yan, YAO Xia, CAO Wei-Xing()
Received:
2006-11-23
Accepted:
2007-12-20
Online:
2008-11-23
Published:
2008-05-30
Contact:
CAO Wei-Xing
JU Chang-Hua, TIAN Yong-Chao, ZHU Yan, YAO Xia, CAO Wei-Xing. RELATIONSHIP BETWEEN DERIVATIVE SPECTRA AND PHOTOSYNTHETIC ORGAN AREA IN RAPESEED (BRASSICA NAPUS)[J]. Chin J Plant Ecol, 2008, 32(3): 664-672.
分类 Classification | 光谱参数 Spectral parameter | 定义 Definition | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
特征导数光谱 Characteristic derivative spectra | 导数光谱 fdλ | 特征波段λ处的一阶导数值 First derivative spectral value at the position of characteristic wavelength λ | ||||||||||||||||
三边参数 Three-edge parameters | 蓝边振幅 Db | 蓝边490~530 nm内一阶导数光谱中的最大值 Maximum value of first derivative spectra within blue edge area 490-530 nm | ||||||||||||||||
蓝边位置 BEP | Db对应的波长位置 Wavelength position of Db (nm) | |||||||||||||||||
蓝边面积 SDb | 蓝边波长范围内一阶导数波段值的总和 Sum of first derivative values within blue edge area | |||||||||||||||||
黄边振幅 Dy | 黄边550~580 nm内一阶导数光谱中的最大值 Maximum value of first derivative spectra within yellow edge area 550-580 nm | |||||||||||||||||
黄边位置 YEP | Dy对应的波长位置 Wavelength position of Dy (nm) | |||||||||||||||||
黄边面积 SDy | 黄边波长范围内一阶导数波段值的总和 Sum of first derivative values within yellow edge area | |||||||||||||||||
红边振幅 Dr | 红边680~755 nm内一阶导数光谱中的最大值 Maximum value of first derivative spectra within red edge area 680-755 nm | |||||||||||||||||
红边位置 REP | Dr对应的波长位置 Wavelength position of Dr (nm) | |||||||||||||||||
红边面积 SDr | 红边波长范围内一阶导数波段值的总和 Sum of first derivative value within red edge area | |||||||||||||||||
特征导数光谱衍生参数 Parameters derived from characteristic derivative spectra | 导数光谱差 Dfd(λ1,λ2) | fdλ1 - fdλ2 | ||||||||||||||||
导数光谱比 Rfd(λ1,λ2) | fdλ1/fdλ2 | |||||||||||||||||
归一化导数光谱差 NDfd(λ1,λ2) | (fdλ1 - fdλ2)/(fdλ1 + fdλ2) | |||||||||||||||||
三边参数衍生参数 Parameters derived from three-edge parameter | 红蓝边振幅差 DDr,b | Dr-Db | ||||||||||||||||
红蓝边振幅比 RDr,b | Dr/Db | |||||||||||||||||
归一化红蓝边振幅差 NDDr,b | (Dr-Db)/(Dr+Db) | |||||||||||||||||
红蓝边面积差 DSDr,b | SDr-SDb | |||||||||||||||||
红蓝边面积比 RSDr,b | SDr/SDb | |||||||||||||||||
归一化红蓝边面积差 NDSDr,y | (SDr - SDb)/(SDr + SDb) | |||||||||||||||||
红黄边振幅差 DDr,y | Dr-Dy | |||||||||||||||||
红黄边振幅比 RDr,y | Dr/Dy | |||||||||||||||||
归一化红黄边振幅差 NDDr,y | (Dr-Dy)/(Dr+Dy) | |||||||||||||||||
红黄边面积差 DSDr,y | SDr-SDy | |||||||||||||||||
红黄边面积比 RSDr,y | SDr/SDy | |||||||||||||||||
归一化红黄边面积差 NDSDr,y | (SDr-SDy)/(SDr+SDy) |
Table 1 Definition of derivative spectral parameters used in the present study
分类 Classification | 光谱参数 Spectral parameter | 定义 Definition | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
特征导数光谱 Characteristic derivative spectra | 导数光谱 fdλ | 特征波段λ处的一阶导数值 First derivative spectral value at the position of characteristic wavelength λ | ||||||||||||||||
三边参数 Three-edge parameters | 蓝边振幅 Db | 蓝边490~530 nm内一阶导数光谱中的最大值 Maximum value of first derivative spectra within blue edge area 490-530 nm | ||||||||||||||||
蓝边位置 BEP | Db对应的波长位置 Wavelength position of Db (nm) | |||||||||||||||||
蓝边面积 SDb | 蓝边波长范围内一阶导数波段值的总和 Sum of first derivative values within blue edge area | |||||||||||||||||
黄边振幅 Dy | 黄边550~580 nm内一阶导数光谱中的最大值 Maximum value of first derivative spectra within yellow edge area 550-580 nm | |||||||||||||||||
黄边位置 YEP | Dy对应的波长位置 Wavelength position of Dy (nm) | |||||||||||||||||
黄边面积 SDy | 黄边波长范围内一阶导数波段值的总和 Sum of first derivative values within yellow edge area | |||||||||||||||||
红边振幅 Dr | 红边680~755 nm内一阶导数光谱中的最大值 Maximum value of first derivative spectra within red edge area 680-755 nm | |||||||||||||||||
红边位置 REP | Dr对应的波长位置 Wavelength position of Dr (nm) | |||||||||||||||||
红边面积 SDr | 红边波长范围内一阶导数波段值的总和 Sum of first derivative value within red edge area | |||||||||||||||||
特征导数光谱衍生参数 Parameters derived from characteristic derivative spectra | 导数光谱差 Dfd(λ1,λ2) | fdλ1 - fdλ2 | ||||||||||||||||
导数光谱比 Rfd(λ1,λ2) | fdλ1/fdλ2 | |||||||||||||||||
归一化导数光谱差 NDfd(λ1,λ2) | (fdλ1 - fdλ2)/(fdλ1 + fdλ2) | |||||||||||||||||
三边参数衍生参数 Parameters derived from three-edge parameter | 红蓝边振幅差 DDr,b | Dr-Db | ||||||||||||||||
红蓝边振幅比 RDr,b | Dr/Db | |||||||||||||||||
归一化红蓝边振幅差 NDDr,b | (Dr-Db)/(Dr+Db) | |||||||||||||||||
红蓝边面积差 DSDr,b | SDr-SDb | |||||||||||||||||
红蓝边面积比 RSDr,b | SDr/SDb | |||||||||||||||||
归一化红蓝边面积差 NDSDr,y | (SDr - SDb)/(SDr + SDb) | |||||||||||||||||
红黄边振幅差 DDr,y | Dr-Dy | |||||||||||||||||
红黄边振幅比 RDr,y | Dr/Dy | |||||||||||||||||
归一化红黄边振幅差 NDDr,y | (Dr-Dy)/(Dr+Dy) | |||||||||||||||||
红黄边面积差 DSDr,y | SDr-SDy | |||||||||||||||||
红黄边面积比 RSDr,y | SDr/SDy | |||||||||||||||||
归一化红黄边面积差 NDSDr,y | (SDr-SDy)/(SDr+SDy) |
叶面积指数 Leaf area index (LAI) | 角果皮面积指数 Pod area index (PAI) | ||||||
---|---|---|---|---|---|---|---|
2月22日 22 Feb. | 3月4日 4 Mar. | 3月14日 14 Mar. | 3月25日 25 Mar. | 4月27日 27 Apr. | 5月2日 2 May | ||
氮水平 Nitrogen level | N0 | 0.21a | 0.28a | 0.60a | 0.80a | 1.08a | 1.13a |
N1 | 0.75b | 0.64a | 1.27ab | 1.53a | 1.79b | 1.62b | |
N2 | 1.38c | 1.44b | 1.94b | 2.52b | 2.35c | 2.03b | |
N3 | 1.79c | 1.83b | 3.89c | 4.14c | 2.76d | 3.08c | |
处理 Treatment | F | 21.37 | 28.08 | 28.5 | 35.79 | 40.63 | 32.1 |
F0.01 | 6.99 | 5.42 | 5.42 | 5.42 | 5.42 | 5.42 |
Table 2 Statistical analyses of photosynthetic organ areas in rapeseed (Brassica napus) under different fertilizer rates
叶面积指数 Leaf area index (LAI) | 角果皮面积指数 Pod area index (PAI) | ||||||
---|---|---|---|---|---|---|---|
2月22日 22 Feb. | 3月4日 4 Mar. | 3月14日 14 Mar. | 3月25日 25 Mar. | 4月27日 27 Apr. | 5月2日 2 May | ||
氮水平 Nitrogen level | N0 | 0.21a | 0.28a | 0.60a | 0.80a | 1.08a | 1.13a |
N1 | 0.75b | 0.64a | 1.27ab | 1.53a | 1.79b | 1.62b | |
N2 | 1.38c | 1.44b | 1.94b | 2.52b | 2.35c | 2.03b | |
N3 | 1.79c | 1.83b | 3.89c | 4.14c | 2.76d | 3.08c | |
处理 Treatment | F | 21.37 | 28.08 | 28.5 | 35.79 | 40.63 | 32.1 |
F0.01 | 6.99 | 5.42 | 5.42 | 5.42 | 5.42 | 5.42 |
Fig.2 Correlations of leaf area index (LAI) (A) and pod area index (PAI) (B) to canopy reflectance and first derivative spectra in rapeseed (Brassica napus) (n=80,48)
Fig.3 Correlations of leaf area index (LAI) (A) and pod area index (PAI) (B) to first derivative spectra at 750 nm (fd750) in rapeseed (Brassica napus) (n=80,48)
光谱参数 Spectral parameter | 导数光谱 差(750,530) Dfd(750,530) | 导数光谱 比(750,530) Rfd(750,530) | 归一化导数光 谱差(750,530) NDfd(750,530) | 导数光谱 差(750,560) Dfd(750,560) | 导数光谱 比(750,560) Rfd(750,560) | 归一化导数光 谱差(750,560) NDfd(750,560) |
---|---|---|---|---|---|---|
相关系数 Correlation coefficient | 0.851 | 0.714 | 0.825 | 0.870 | 0.352 | 0.259 |
Table 3 Correlation of leaf area index (LAI) to spectral parameters derived from first derivative spectra in rapeseed (Brassica napus) (n=80)
光谱参数 Spectral parameter | 导数光谱 差(750,530) Dfd(750,530) | 导数光谱 比(750,530) Rfd(750,530) | 归一化导数光 谱差(750,530) NDfd(750,530) | 导数光谱 差(750,560) Dfd(750,560) | 导数光谱 比(750,560) Rfd(750,560) | 归一化导数光 谱差(750,560) NDfd(750,560) |
---|---|---|---|---|---|---|
相关系数 Correlation coefficient | 0.851 | 0.714 | 0.825 | 0.870 | 0.352 | 0.259 |
油菜叶面积指数LAI | 角果皮面积指数PAI | |||||||
---|---|---|---|---|---|---|---|---|
光谱参数 Spectral parameter | 相关系数 Correlation coefficient | 光谱参数 Spectral parameter | 相关系数 Correlation coefficient | 光谱参数 Spectral parameter | 相关系数 Correlation coefficient | 光谱参数 Spectral parameter | 相关系数 Correlation coefficient | |
Db | 0.648** | SDy | -0.751** | Db | -0.112 | SDy | -0.357* | |
BEP | 0.342** | Dr | 0.816** | BEP | 0.112 | Dr | 0.725** | |
SDb | 0.572** | REP | 0.489** | SDb | -0.199 | REP | 0.192 | |
Dy | -0.747** | SDr | 0.822** | Dy | -0.280 | SDr | 0.756** | |
YEP | 0.302** | REP(le) | 0.803** | YEP | -0.234 | REP(le) | 0.768** | |
DDr,b | 0.824** | DSDr,b | 0.826** | DDr,b | 0.785** | DSDr,b | 0.796** | |
DDr,y | 0.811** | DSDr,y | 0.819** | DDr,y | 0.698** | DSDr,y | 0.728** | |
RDr,b | 0.784** | RSDr,b | 0.788** | RDr,b | 0.778** | RSDr,b | 0.783** | |
RDr,y | 0.174 | RSDr,y | -0.310** | RDr,y | 0.666** | RSDr,y | 0.526** | |
NDDr,b | 0.734** | NDSDr,b | -0.684** | NDDr,b | 0.763** | NDSDr,b | 0.759** | |
NDDr,y | -0.206 | NDSDr,y | -0.476** | NDDr,y | 0.670** | NDSDr,y | 0.506** |
Table 4 Correlations of leaf area index (LAI) and pod area index (PAI) to three edge parameters and its derivatives in rapeseed (Brassica napus) (n=80, 48)
油菜叶面积指数LAI | 角果皮面积指数PAI | |||||||
---|---|---|---|---|---|---|---|---|
光谱参数 Spectral parameter | 相关系数 Correlation coefficient | 光谱参数 Spectral parameter | 相关系数 Correlation coefficient | 光谱参数 Spectral parameter | 相关系数 Correlation coefficient | 光谱参数 Spectral parameter | 相关系数 Correlation coefficient | |
Db | 0.648** | SDy | -0.751** | Db | -0.112 | SDy | -0.357* | |
BEP | 0.342** | Dr | 0.816** | BEP | 0.112 | Dr | 0.725** | |
SDb | 0.572** | REP | 0.489** | SDb | -0.199 | REP | 0.192 | |
Dy | -0.747** | SDr | 0.822** | Dy | -0.280 | SDr | 0.756** | |
YEP | 0.302** | REP(le) | 0.803** | YEP | -0.234 | REP(le) | 0.768** | |
DDr,b | 0.824** | DSDr,b | 0.826** | DDr,b | 0.785** | DSDr,b | 0.796** | |
DDr,y | 0.811** | DSDr,y | 0.819** | DDr,y | 0.698** | DSDr,y | 0.728** | |
RDr,b | 0.784** | RSDr,b | 0.788** | RDr,b | 0.778** | RSDr,b | 0.783** | |
RDr,y | 0.174 | RSDr,y | -0.310** | RDr,y | 0.666** | RSDr,y | 0.526** | |
NDDr,b | 0.734** | NDSDr,b | -0.684** | NDDr,b | 0.763** | NDSDr,b | 0.759** | |
NDDr,y | -0.206 | NDSDr,y | -0.476** | NDDr,y | 0.670** | NDSDr,y | 0.506** |
Fig.4 Relationships of leaf area index (LAI)(A)and pod area index (PAI)(B) to red edge position (REP) (Ⅰ) andREP extracted from linear extrapolation method (REP(le) (Ⅱ) in rapeseed (Brassica napus)
Fig.5 Relationships of leaf area index (LAI) (A) and pod area index (PAI) (B) to red edge area (SDr) (Ⅰ) and difference of red edge area and blue edge area (DSDr,b) (Ⅱ) in rapeseed (Brassica napus)
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