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《Journal of Southwest China Normal University(Natural Science Edition)》 2014-05
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On Correlation Between Leaf Spectral Reflectance and Agricultural Parameter of Beibei 447 Jincheng Orange Leaves

YU Tian-xia;LUO Hong-xia;ZOU Yang-qing;WANG Jun;College of Geography Sciences,Southwest University;  
Taking the leaves of the Jincheng orange tree as an object,the spectral reflectance of the leaves has been measured by Handheld Spectrometer,meanwhile the agricultural parameter of the leaves has been determined in the lab.The first and the second derivatives of the spectrum have been calculated.The relationship between the agricultural parameter and the spectral reflectance of the leaves has been analyzed by the statistical method.The result shows that there is only a significant correlation between phosphorus content and original spectral reflectance.The correlation coefficient which is the phosphorus content and first derivative of spectrum,the second derivative of spectrum is higher than original spectral reflectance. All of the agricultural parameters and the first derivative,the two derivatives of leaf spectral reflectance are significantly correlated,and the correlation of nitrogen content is the highest,which reaches more than 0.9.This indicates that the derivatives of spectra reflectance can enhance the correlation,which can provide an important basis for using hyper-spectral remote sensing to quantitatively estimated the agricultural parameter of the leaves of Jincheng orange.
【Fund】: 西南大学基本科研业务费专项资金(XDJK20091006)
【CateGory Index】: S666.4
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