In situ hyperspectral data analysis for pigment content estimation of rice leaves

被引：21

作者：

Cheng, Qian ^{[1
]}

Huang, Jing-Feng ^{[1
]}

Wang, Xiu-Zhen ^{[1
]}

Wang, Ren-Chao ^{[1
]}

机构：

[1] Inst. of Agric. Remote Sensing, Zhejiang Univ.

来源：

Journal of Zhejiang University: Science | 2003年 / 4卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Correlation; Hyperspectral reflectance; Pigment contents; Rice leaves;

D O I：

10.1631/jzus.2003.0727

中图分类号：

学科分类号：

摘要：

Analyses of the correlation between hyperspectral reflectance and pigment content including chlorophyll-a, chlorophyll-b and carotenoid of leaves in different sites of rice were reported. The hyperspectral reflectance of late rice during the whole growing season was measured using a spectroradiometer with spectral range of 350-1050 nm and resolution of 3 nm. The chlorophyll-a, chlorophyll-b and carotenoid contents of rice leaves in rice fields to which different levels of nitrogen were applied were measured. The chlorophyll-a content of upper leaves was well correlated with the spectral variables. However, the correlation between both chlorophyll-b and carotenoid and the spectral variables was far from that of chlorophyll-a. The potential of hyperspectral reflectance measurement for estimating chlorophyll-a of upper leaves was evaluated using univariate correlation and multivariate regression analysis methods with different types of predictors. This study showed that the most suitable estimated model of chlorophyll-a of upper leaves was obtained by using some hyperspectral variables such as SDr, SDb and their integration.

引用

页码：727 / 733

页数：6

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