Analysis of common canopy vegetation indices for indicating leaf nitrogen accumulations in wheat and rice

被引：161
作者：
Zhu, Yan [1 ]
Yao, Xia [1 ]
Tian, YongChao [1 ]
Liu, XiaoJun [1 ]
Cao, WeiXing [1 ]
机构：
[1] Nanjing Agr Univ, Hitech Key Lab Informat Agr Jiangsu Prov, Key Lab Crop Growth Regulat, Minist Agr, Nanjing 210095, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION | 2008年 / 10卷 / 01期
基金：
中国国家自然科学基金;
关键词：
canopy reflectance spectra; CropScan; leaf nitrogen accumulation; ratio vegetation index; rice; wheat;
D O I：
10.1016/j.jag.2007.02.006
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
The common spectra wavebands and vegetation indices (VI) were identified for indicating leaf nitrogen accumulation (LNA), and the quantitative relationships of LNA to canopy reflectance spectra were determined in both wheat (Triticum aestivum L.) and rice (Oryza sativa L.). The 8 10 and 870 nm are two common spectral wavebands indicating LNA in both wheat and rice. Among all ratio vegetation indices (RVI), difference vegetation indices (DVI) and normalized difference vegetation indices (NDVI) of 16 wavebands from the MSR16 radiometer, RVI (870, 660) and RVI (810,660) were most highly correlated to LNA in both wheat and rice. In addition, the relations between VIs and LNA gave better results than relations between single wavebands and LNA in both wheat and rice. Thus LNA in both wheat and rice could be indicated with common VIs, but separate regression equations are better for LNA monitoring. (c) 2007 Elsevier B.V. All rights reserved.
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页码：1 / 10
页数：10
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