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Spectranomics : Remote Sensing of Canopy Chemical and Biological Diversity in Tropical Forests. David E. Knapp, Roberta E. Martin, Gregory P. Asner Carnegie Institution, Dept. of Global Ecology. - PowerPoint PPT Presentation
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The chemical diversity of humid tropical forests is thought to exceed that of all other terrestrial ecosystems combined, with cascading effects on spectroscopic patterns of tropical canopies acquired from new airborne and future space-based imaging spectrometers. To address this new frontier in spectroscopy, we developed the Carnegie Spectranomics Project (CSP), which seeks to quantify and understand linkages between chemical, spectral, and taxonomic patterns among tropical forest species.
The lidar has been critical in characterizing the 3-D structure of the tree canopies such that best quality image spectra can be used to extract chemistry data remotely. The fusion of these two sources of data make it possible to improve the ability to relate field measurements of leaf spectra to the canopy scale by providing critical data for modeling the observation and illumination parameters under which each pixel’s spectra was collected.
HiF
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y
LiD
AR
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ctra
l PC
A
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stan
t Sun
-Vie
wG
eom
etry
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Spectranomics: Remote Sensing of Canopy Chemical and Biological Diversity in Tropical Forests
Explained variation, single regression analyses
Leaf Trait
Wat
er
LMA C
Sol
uble
C
Hem
i-cel
lulo
se
Cel
lulo
se
Lign
in
Chl
A
Chl
B
Car
Tann
ins
Phe
nols N P Zn K Fe Ca B
Mg
Mn
Del
ta 1
5N
Del
ta 1
3C
Adj
uste
d-r2 V
alue
0.0
0.2
0.4
0.6
0.8
1.0
FamilyGenusSpeciesMATMAPSite
High-fidelity Plant Spectroscopy
David E. Knapp, Roberta E. Martin, Gregory P. AsnerCarnegie Institution, Dept. of Global Ecology
Pigm
ents
Wat
er, L
eaf S
truct
ure
Water, Protein, Carbon Fractions, Secondary Compounds
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