TY  - DATA
ID  - doi:10.5061/dryad.t6md2
T1  - Data from: A hyperspectral image can predict tropical tree growth rates in single-species stands
AU  - Caughlin TT
AU  - Graves SJ
AU  - Asner GP
AU  - van Breugel M
AU  - Hall JS
AU  - Martin RE
AU  - Ashton MS
AU  - Bohlman SA
Y1  - 2016/10/13/
N2  - Remote sensing is increasingly needed to meet the critical demand for estimates of forest structure and composition at landscape to continental scales. Hyperspectral images can detect tree canopy properties, including species identity, leaf chemistry and disease. Tree growth rates are related to these measurable canopy properties but whether growth can be directly predicted from hyperspectral data remains unknown. We used a single hyperspectral image and LiDAR-derived elevation to predict growth rates for twenty tropical tree species planted in experimental plots. We asked whether a consistent relationship between spectral data and growth rates exists across all species and which spectral regions, associated with different canopy chemical and structural properties, are important for predicting growth rates. We found that a linear combination of narrowband indices and elevation is correlated with standardized growth rates across all twenty tree species (R2=53.70%). Although wavelengths from the entire visible-to-shortwave infrared spectrum were involved in our analysis, results point to relatively greater importance of visible and near-infrared regions for relating canopy reflectance to tree growth data. Overall, we demonstrate the potential for hyperspectral data to quantify tree demography over a much larger area than possible with field-based methods in forest inventory plots.
KW  - field planting trial
KW  - reforestation
KW  - plantation
KW  - tropical tree
KW  - Albizia adinocephala
KW  - Albizia guachapele
KW  - Astronium graveolens
KW  - Calycophyllum candidissimum
KW  - Cedrela odorata
KW  - Colubrina glandulosa
KW  - Cordia alliodora
KW  - Diphysia americana
KW  - Enterolobium cyclocarpum
KW  - Erythrina fusca
KW  - Gliricidia sepium
KW  - Guazuma ulmifolia
KW  - Luehea seemannii
KW  - Ochroma pyramidale
KW  - Pachira quinata
KW  - Samanea saman
KW  - Spondias mombin
KW  - Tabebuia guayacan
KW  - Tectonia grandis
KW  - Terminalia amazonia
JF  - Ecological Applications
PB  - Dryad Digital Repository
UR  - https://doi.org/10.5061/dryad.t6md2
DO  - doi:10.5061/dryad.t6md2
ER  -