Study on Relationship between New Characteristic Parameters of Spectral Curve and Chlorophyll Content for Rice

文献类型： 外文期刊

第一作者： Xu Xin-gang

作者： Xu Xin-gang;Zhao Chun-jiang;Wang Ji-hua;Li Cun-jun;Liu Huan-jun;Huang Wen-jiang;Liu Huan-jun

作者机构：

关键词： Characteristic parameter of spectral curve; Velocities of change; Angle; Chlorophyll content

期刊名称：SPECTROSCOPY AND SPECTRAL ANALYSIS （ 影响因子：0.589； 五年影响因子：0.504 ）

ISSN： 1000-0593

年卷期： 2011 年 31 卷 1 期

页码：

收录情况： SCI

摘要： It is of significance to monitor chlorophyll content with hyperspectral data for crop growth diagnosis in field. In the study, with the point of view that spectral curve shapes display "tall, low, fat and thin" morphological changes, we proposed some new characteristic parameters from spectral curve such as the ascensive or degressive velocities of segments composing peak or valley shapes in spectral curve, and angles formed by the lines fitting the segments of two sides of peak or valley curves, and used the normalized spectra to analyze correlation between these parameters and rice chlorophyll content. The result shows that (1) there is a good negative correlation between rice chlorophyll content and normalized reflectance spectra from 520-740 nm; (2) characteristic parameters from green peak region of spectral curve display better correlation with rice chlorophyll content, which makes it possible to utilize the parameters to monitor crop chlorophyll content, and will provide new ideas and methods for carrying out crop growth diagnosis with hyperspectral data.

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