JXB Advance Access originally published online on September 21, 2006
Journal of Experimental Botany 2007 58(4):855-867; doi:10.1093/jxb/erl123
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Remote Sensing |
Hyperspectral remote sensing of plant pigments
Department of Geography, Lancaster University, Lancaster LA1 4YB, UK
* E-mail: alan.blackburn{at}lancaster.ac.uk
The dynamics of pigment concentrations are diagnostic of a range of plant physiological properties and processes. This paper appraises the developing technologies and analytical methods for quantifying pigments non-destructively and repeatedly across a range of spatial scales using hyperspectral remote sensing. Progress in deriving predictive relationships between various characteristics and transforms of hyperspectral reflectance data are evaluated and the roles of leaf and canopy radiative transfer models are reviewed. Requirements are identified for more extensive intercomparisons of different approaches and for further work on the strategies for interpreting canopy scale data. The paper examines the prospects for extending research to the wider range of pigments in addition to chlorophyll, testing emerging methods of hyperspectral analysis and exploring the fusion of hyperspectral and LIDAR remote sensing. In spite of these opportunities for further development and the refinement of techniques, current evidence of an expanding range of applications in the ecophysiological, environmental, agricultural, and forestry sciences highlights the growing value of hyperspectral remote sensing of plant pigments.
Key words: Anthocyanins, carotenoids, chlorophyll, hyperspectral, optical properties, pigments, radiative transfer, reflectance, remote sensing
Received 15 May 2006; Accepted 17 July 2006