Remote sensing of photosynthetic-light-use efficiency of boreal forest

被引：163

作者：

Nichol, CJ ^{[1
]}

Huemmrich, KF

Black, TA

Jarvis, PG

Walthall, CL

Grace, J

Hall, FG

机构：

[1] Univ Edinburgh, Inst Ecol & Resource Management, Edinburgh EH9 3JU, Midlothian, Scotland

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] Univ British Columbia, Dept Agr Sci, Vancouver, BC V6T 1Z4, Canada

[4] US Agr Res Serv, Remote Sensing Lab, Laurel, MD 20707 USA

来源：

AGRICULTURAL AND FOREST METEOROLOGY | 2000年 / 101卷 / 2-3期

基金：

加拿大自然科学与工程研究理事会; 英国自然环境研究理事会; 美国国家航空航天局; 美国海洋和大气管理局;

关键词：

xanthophyll cycle; AVIRIS; photochemical reflectance index; eddy covariance;

D O I：

10.1016/S0168-1923(99)00167-7

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Using a helicopter-mounted portable spectroradiometer and continuous eddy covariance data we were able to evaluate the photochemical reflectance index (PRI) as an indicator of canopy photosynthetic light-use efficiency (LUE) in four boreal forest species during the Boreal Ecosystem Atmosphere experiment (BOREAS). PRI was calculated from narrow waveband reflectance data and correlated with LUE calculated from eddy covariance data. Significant linear correlations were found between PRI and LUE when the four species were grouped together and when divided into functional type: coniferous and deciduous. Data from the helicopter-mounted spectroradiometer were then averaged to represent data generated by the Airborne Visible Infrared Imaging Spectrometer (AVIRIS). We calculated PRI from these data and relationships with canopy LUE were investigated. The relationship between PRI and LUE was weakened for deciduous species but strengthened for the coniferous species. The robust nature of this relationship suggests that relative photosynthetic rates may be derived from remotely-sensed reflectance measurements. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：131 / 142

页数：12

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