The Photochemical Reflectance Index (PRI) as a water-stress index

被引：103
作者：
Thenot, F [1 ]
Méthy, M [1 ]
Winkel, T [1 ]
机构：
[1] CNRS, Ctr Ecol Fonct & Evolut, Dream Unit, F-34293 Montpellier 5, France
来源：
INTERNATIONAL JOURNAL OF REMOTE SENSING | 2002年 / 23卷 / 23期
关键词：
D O I：
10.1080/01431160210163100
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
Measurements of leaf reflectance in two narrow wavelength bands centred around 531 and 570 nm were carried out during withering of two contrasting functional and structural plant types: Chenopodium quinoa (Willd.) and Arbutus unedo (L.). The Photochemical Reflectance Index (PRI) = (R-531 - R-570)/(R-531 +R-570) was calculated. The results showed that PRI could be used as a reliable water-stress index. However, some limits to the use of PRI have to be emphasized, e.g. the wilting of leaves during dry periods. If such limits are under control, PRI could be a non-destructive and low cost method for assessing plant water status.
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收藏
页码：5135 / 5139
页数：5
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