Chin J Plant Ecol ›› 2009, Vol. 33 ›› Issue (1): 34-44.DOI: 10.3773/j.issn.1005-264x.2009.01.004
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FENG Wei, ZHU Yan, YAO Xia, TIAN Yong-Chao, CAO Wei-Xing*()
Received:
2007-06-26
Accepted:
2007-10-16
Online:
2009-06-26
Published:
2009-01-30
Contact:
CAO Wei-Xing
FENG Wei, ZHU Yan, YAO Xia, TIAN Yong-Chao, CAO Wei-Xing. MONITORING LEAF DRY WEIGHT AND LEAF AREA INDEX IN WHEAT WITH HYPERSPECTRAL REMOTE SENSING[J]. Chin J Plant Ecol, 2009, 33(1): 34-44.
光谱参数 Spectral parameter | 定义与算法 Definition and algorithm | 参考文献 Reference |
RVI | 两波段反射率比值 Ratio of reflectance at λ1 and λ2 Rλ1/Rλ2 | |
SARVI (MSS) | 基于MSS波段的土壤调整比值植被指数 Soil adjusted ratio vegetation indices on data from MSS MSS7/(MSS5+b/a) | |
TC3 | 穗帽变换第三分量 The third variable extracted using Tasseled Cap transformation -0.829MSS4+0.522MSS5-0.039MSS6+0.194MSS7 | |
GM1 | 750 nm与550 nm处反射率比值 Ratio of reflectance at 750 nm to reflectivity at 550 nm R750/R550 | |
VOG2 | 红边光谱比值植被指数 Red edge reflectance-ratio indices (R734-R747)/(R715+R726) | |
MSR705 | 修正SR705植被指数 Simple ratio indices modified on SR705 R750-R445/R705-R445 | |
PSSRb | Ratio of reflectance at 800 and 635 nm R800/R635 | |
(R750-800/R695-740)-1 | 宽波段695~740 nm反射率倒数与750~800 nm反射率组合指数 Broad spectral bands indice with reciprocal reflectance from 695 to 740 nm and reflectance from 750 to 800 nm (R750-800/R695-740)-1 | |
Dr/Db | 红边内一阶微分最大值与蓝边内一阶微分最大值的比值 Radio of the red edge amplitude and the blue edge amplitude Max (dR(λi)/dλi)/max (dR(λj)/dλj), i=680-760 nm, j=490-530 nm | |
SDr/SDb | 红边内一阶微分总和与蓝边内一阶微分总和的比值 Radio of the red-edge integral areas and the blue-edge integral areas $\sum\limits_{j=680}^{755}(R_{i+1}-R_{i-1})/2 / \sum\limits_{i=490}^{530}(R_{i+1}-R_{i-1})/2$ | |
MSR | 修正型简单比值指数 Modified simple ratio (Rλ1/Rλ2-1)/[(Rλ1/Rλ2)0.5-1] |
Table 1 Summary of different hyperspectral parameters used in this study
光谱参数 Spectral parameter | 定义与算法 Definition and algorithm | 参考文献 Reference |
RVI | 两波段反射率比值 Ratio of reflectance at λ1 and λ2 Rλ1/Rλ2 | |
SARVI (MSS) | 基于MSS波段的土壤调整比值植被指数 Soil adjusted ratio vegetation indices on data from MSS MSS7/(MSS5+b/a) | |
TC3 | 穗帽变换第三分量 The third variable extracted using Tasseled Cap transformation -0.829MSS4+0.522MSS5-0.039MSS6+0.194MSS7 | |
GM1 | 750 nm与550 nm处反射率比值 Ratio of reflectance at 750 nm to reflectivity at 550 nm R750/R550 | |
VOG2 | 红边光谱比值植被指数 Red edge reflectance-ratio indices (R734-R747)/(R715+R726) | |
MSR705 | 修正SR705植被指数 Simple ratio indices modified on SR705 R750-R445/R705-R445 | |
PSSRb | Ratio of reflectance at 800 and 635 nm R800/R635 | |
(R750-800/R695-740)-1 | 宽波段695~740 nm反射率倒数与750~800 nm反射率组合指数 Broad spectral bands indice with reciprocal reflectance from 695 to 740 nm and reflectance from 750 to 800 nm (R750-800/R695-740)-1 | |
Dr/Db | 红边内一阶微分最大值与蓝边内一阶微分最大值的比值 Radio of the red edge amplitude and the blue edge amplitude Max (dR(λi)/dλi)/max (dR(λj)/dλj), i=680-760 nm, j=490-530 nm | |
SDr/SDb | 红边内一阶微分总和与蓝边内一阶微分总和的比值 Radio of the red-edge integral areas and the blue-edge integral areas $\sum\limits_{j=680}^{755}(R_{i+1}-R_{i-1})/2 / \sum\limits_{i=490}^{530}(R_{i+1}-R_{i-1})/2$ | |
MSR | 修正型简单比值指数 Modified simple ratio (Rλ1/Rλ2-1)/[(Rλ1/Rλ2)0.5-1] |
Fig. 2 Changes of canopy reflectance under different N rates (A) and relationships of reflectance to leaf dry weight (LW) and leaf area index (LAI) (B) in wheat
光谱参数 Spectral parameter | 叶干重 Leaf dry weight | 叶面积指数 LAI | |||||
---|---|---|---|---|---|---|---|
回归方程 Equation | R2 | SE | 回归方程 Equation | R2 | SE | ||
RVI (810, 560) | y = 0.024 9x + 0.007 7 | 0.819 | 0.033 | y = 0.561 3x + 0.183 3 | 0.767 | 0.846 | |
FD755 | y = 0.609 2x + 0.054 6 | 0.817 | 0.033 | y = 13.957x + 1.212 | 0.788 | 0.820 | |
GM1 | y = 0.031 4x - 0.006 4 | 0.817 | 0.033 | y = 0.703 2x - 0.104 4 | 0.751 | 0.872 | |
SARVI (MSS) | y = 0.012 6x + 0.040 6 | 0.814 | 0.033 | y = 0.278 7x + 0.967 2 | 0.736 | 0.896 | |
TC3 | y = 0.047 3x - 0.027 | 0.806 | 0.034 | y = 1.065 5x - 0.590 2 | 0.751 | 0.877 | |
RVI (900, 680) | y = 0.008 7x + 0.050 5 | 0.807 | 0.034 | y = 0.192 5x + 1.200 4 | 0.719 | 0.923 | |
MSR (800, 670) | y = 0.054 2x + 0.033 4 | 0.814 | 0.034 | y = 1.192 1x + 0.826 5 | 0.724 | 0.923 | |
SDr/SDb | y = 0.011 6x + 0.019 5 | 0.805 | 0.034 | y = 0.259 7x + 0.464 7 | 0.746 | 0.874 | |
PSSRb | y = 0.011 7x + 0.045 8 | 0.806 | 0.034 | y = 0.259 3x + 1.089 | 0.724 | 0.913 | |
(R750-800/R695-740)-1 | y = 0.107 2x + 0.030 6 | 0.793 | 0.035 | y = 2.422 2x + 0.698 1 | 0.744 | 0.884 | |
VOG2 | y = -0.540 6x + 0.049 8 | 0.788 | 0.035 | y = -12.231x + 1.127 9 | 0.741 | 0.885 | |
MSR705 | y = 0.056 8x + 0.014 2 | 0.795 | 0.035 | y = 1.265 6x + 0.364 9 | 0.727 | 0.910 | |
Dr/Db | y = 0.023 6x + 0.012 | 0.774 | 0.036 | y = 0.530 7x + 0.296 6 | 0.717 | 0.913 | |
R870 | y = 0.006 7x - 0.082 | 0.714 | 0.041 | y = 0.145 8x - 1.689 3 | 0.629 | 1.022 |
Table 2 Quantitative relationships of leaf dry weight and leaf area index (LAI) to some hyperspectral parameters in wheat (n=402)
光谱参数 Spectral parameter | 叶干重 Leaf dry weight | 叶面积指数 LAI | |||||
---|---|---|---|---|---|---|---|
回归方程 Equation | R2 | SE | 回归方程 Equation | R2 | SE | ||
RVI (810, 560) | y = 0.024 9x + 0.007 7 | 0.819 | 0.033 | y = 0.561 3x + 0.183 3 | 0.767 | 0.846 | |
FD755 | y = 0.609 2x + 0.054 6 | 0.817 | 0.033 | y = 13.957x + 1.212 | 0.788 | 0.820 | |
GM1 | y = 0.031 4x - 0.006 4 | 0.817 | 0.033 | y = 0.703 2x - 0.104 4 | 0.751 | 0.872 | |
SARVI (MSS) | y = 0.012 6x + 0.040 6 | 0.814 | 0.033 | y = 0.278 7x + 0.967 2 | 0.736 | 0.896 | |
TC3 | y = 0.047 3x - 0.027 | 0.806 | 0.034 | y = 1.065 5x - 0.590 2 | 0.751 | 0.877 | |
RVI (900, 680) | y = 0.008 7x + 0.050 5 | 0.807 | 0.034 | y = 0.192 5x + 1.200 4 | 0.719 | 0.923 | |
MSR (800, 670) | y = 0.054 2x + 0.033 4 | 0.814 | 0.034 | y = 1.192 1x + 0.826 5 | 0.724 | 0.923 | |
SDr/SDb | y = 0.011 6x + 0.019 5 | 0.805 | 0.034 | y = 0.259 7x + 0.464 7 | 0.746 | 0.874 | |
PSSRb | y = 0.011 7x + 0.045 8 | 0.806 | 0.034 | y = 0.259 3x + 1.089 | 0.724 | 0.913 | |
(R750-800/R695-740)-1 | y = 0.107 2x + 0.030 6 | 0.793 | 0.035 | y = 2.422 2x + 0.698 1 | 0.744 | 0.884 | |
VOG2 | y = -0.540 6x + 0.049 8 | 0.788 | 0.035 | y = -12.231x + 1.127 9 | 0.741 | 0.885 | |
MSR705 | y = 0.056 8x + 0.014 2 | 0.795 | 0.035 | y = 1.265 6x + 0.364 9 | 0.727 | 0.910 | |
Dr/Db | y = 0.023 6x + 0.012 | 0.774 | 0.036 | y = 0.530 7x + 0.296 6 | 0.717 | 0.913 | |
R870 | y = 0.006 7x - 0.082 | 0.714 | 0.041 | y = 0.145 8x - 1.689 3 | 0.629 | 1.022 |
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