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Spectral indices for estimating photosynthethic pigment concentrations : a test using senescent tree leaves.

Blackburn, George Alan (1998) Spectral indices for estimating photosynthethic pigment concentrations : a test using senescent tree leaves. International Journal of Remote Sensing, 19 (4). pp. 657-675.

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Abstract

The possibility of estimating the concentration of individual photosynthetic pigments within vegetation from reflectance spectra offers great promise for the use of remote sensing to assess physiological status, species type and productivity. This study evaluates a number of spectral indices for estimating pigment concentrations at the leaf scale, using samples from deciduous trees at various stages of senescence. Two new indices (PSSR and PSND) are developed which have advantages over previous techniques. The optimal individual wavebands for pigment estimation are identified empirically as 680 nm for chlorophyll a, 635 nm for chlorophyll b and 470 nm for the carotenoids. These wavebands are justified theoretically and are shown to improve the performance of many of the spectral indices tested. Strong predictive models are demonstrated for chlorophyll a and b, but not for the carotenoids and the paper explores the reasons for this.

Item Type: Article
Journal or Publication Title: International Journal of Remote Sensing
Subjects: G Geography. Anthropology. Recreation > G Geography (General)
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 433
Deposited By: Dr GA Blackburn
Deposited On: 07 Feb 2007
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:09
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/433

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