11-Vegetation

11-Vegetation - 1 ESM 266: Vegetation ESM 266: Vegetation...

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Unformatted text preview: 1 ESM 266: Vegetation ESM 266: Vegetation properties properties Jeff Dozier Spectral characteristics related to leaf Spectral characteristics related to leaf pigments and water pigments and water Water vapor absorption bands: 0.97 m 1.19 m 1.45 m 1.94 m 2.70 m Cross-section Cross-section through a leaf through a leaf Absorption spectra of Absorption spectra of compounds compounds 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 violet blue green yellow red Absorption Efficiency -carotene Chlorophyll a Chlorophyll b 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 violet blue green yellow red Wavelength, m Phycoerythrin Phycocyanin Absorption Efficiency a. b. Wavelength, m Absorption Spectra of Chlorophyll a and b Chlorophyll a peak absorption is at 0.43 and 0.66 m. Chlorophyll b peak absorption is at 0.45 and 0.65 m. Optimum chlorophyll absorption windows are: 0.45 - 0.52 m and 0.63 - 0.69 m Litton Emerge Spatial, Inc., CIR image (RGB = NIR,R,G) of Dunkirk, NY, at 1 x 1 m obtained on December 12,1998. Natural color image (RGB = RGB) of a N.Y. Power Authority lake at 1 x 1 ft obtained on October 13, 1997. Seasonal Seasonal variability in variability in spectral reflectance spectral reflectance ( ( Sweetgum Sweetgum Liquidambar Liquidambar styraciflua styraciflua L.) L.) Spatial variability on Spatial variability on the leaves the leaves (Blackjack oak) (Blackjack oak) 1 2 a 3 4 5 10 15 20 25 30 35...
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This note was uploaded on 08/06/2008 for the course ESM 266 taught by Professor Dozier during the Spring '08 term at UCSB.

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11-Vegetation - 1 ESM 266: Vegetation ESM 266: Vegetation...

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