Study on Relationship Between Alfalfa Canopy Spectral Reflectance and Leaf Water Content

被引：3

作者：

Fu Yan-bo ^{[1
]}

Fan Yan-min ^{[1
]}

Sheng Jian-dong ^{[1
]}

Li Ning ^{[1
]}

Wu Hong-qi ^{[1
]}

Li Mei-ting ^{[1
]}

Li Li ^{[1
]}

Zhao Yun ^{[1
]}

机构：

[1] Xinjiang Agr Univ, Grass Ind & Environm Sci Acad, Urumqi 830052, Peoples R China

来源：

SPECTROSCOPY AND SPECTRAL ANALYSIS | 2013年 / 33卷 / 03期

关键词：

Alfalfa; Water content; Canopy reflectance; Squaring period; Model;

D O I：

10.3964/j.issn.1000-0593(2013)03-0766-04

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

In the present study, alfalfa canopy reflectance was researched at alfalfa squaring period under different irrigation amount at the hutubi county grassland ecological station. Determining the spectral diagnostic model of alfalfa leaf moisture content was determined by spectrometry. The results showed that (1) The spectral reflectance of alfalfa canopy gradually decreases with the increase in the leaf water content in the near infrared. (2) The spectral inversion model of alfalfa leaf moisture content established by normalized reflectance spectra is superior to the original reflectance spectra, and the prediction model established in the 1344 similar to 1660 nm band has the lowest average relative error (7.8%). (3) In this study, the spectral diagnostic model of the leaf moisture content is: Y=0.962-7.560X(1451)+5.295X(1473). The spectral prediction model of the alfalfa leaf moisture content can provide a basis for decision making for scientific irrigation of alfalfa.

引用

页码：766 / 769

页数：4

共 14 条

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