Water Shortage and Salinization Diagnosis of the Grass by Spectral Reflectance

Kengo Ito, Tomoyasu Ezuka, Kyoichi Otsuki, Makio Kamichika

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

In this paper, we tried to diagnose the stress that was brought by water shortage and salinization by spectral reflectance. The concentration of chlorophyll and leaf water content with raw leaf of grass was changed by these stresses. Spectral reflectance was influenced by the stresses too. But the pattern of spectral curve changes was not the same for water shortage and salinization. The concentration of chlorophyll was decreased similarly by both stresses. On the other hands, the leaf water content was extremely decreased by water shortage compared to salinization. We couldn't learn the cause of stress using the concentration of chlorophyll as the only index of stress. It is necessary for diagnosis of stress that both concentration of chlorophyll and leaf water content be applied as the indexes of stress. The concentration of chlorophyll and leaf water content could be measured by spectral reflectance not concerned with the kind of stress. The concentration of chlorophyll was estimated by R800nm/R680nm. The leaf water content was estimated by R1200 nm/R1500nm. Application of these indexes makes possible the diagnosis of water shortage and salinization stress by remote sensing.

元の言語英語
ページ(範囲)199-204
ページ数6
ジャーナルJournal of Agricultural Meteorology
59
発行部数2
DOI
出版物ステータス出版済み - 1 1 2003

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water salinization
water shortages
spectral reflectance
salinization
reflectance
grass
grasses
chlorophyll
water content
leaves
water
remote sensing

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Atmospheric Science

これを引用

Water Shortage and Salinization Diagnosis of the Grass by Spectral Reflectance. / Ito, Kengo; Ezuka, Tomoyasu; Otsuki, Kyoichi; Kamichika, Makio.

:: Journal of Agricultural Meteorology, 巻 59, 番号 2, 01.01.2003, p. 199-204.

研究成果: ジャーナルへの寄稿記事

Ito, Kengo ; Ezuka, Tomoyasu ; Otsuki, Kyoichi ; Kamichika, Makio. / Water Shortage and Salinization Diagnosis of the Grass by Spectral Reflectance. :: Journal of Agricultural Meteorology. 2003 ; 巻 59, 番号 2. pp. 199-204.
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