Abstract
PROSPECT, a widely-used leaf directional-hemispherical reflectance and transmittance model, currently treats the behaviour of chlorophylls a, b, carotenoids, and anthocyanins uniformly, leading to errors. A finer discrimination among these pigments in light-absorbing plant tissues should improve the model. In this paper, a new calibration and validation phase of PROSPECT is performed using two comprehensive databases containing hundreds of leaves collected in temperate latitudes in Angers, France, and in a tropical environment in Hawaii, USA. Leaf biochemical (chlorophylls a, b, carotenoids, water, and dry matter) and optical properties (directional-hemispherical reflectance and transmittance measured from 400 nm to 2500 nm) were measured and used in the model development steps. The first step consists in providing distinct in vivo specific absorption coefficients for the leaf pigments using the Angers database. The model is then inverted to predict the biochemical content of intact leaves from both data sets. The main result of this preliminary study is that the new chlorophyll and carotenoid specific absorption coefficients are in good agreement with available in vitro absorption spectra, that the chlorophyll predictions are improved, and that the carotenoids are reasonably retrieved.
| Original language | English (US) |
|---|---|
| Journal | International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives |
| Volume | 36 |
| Issue number | 7/C50 |
| State | Published - Jan 1 2007 |
| Externally published | Yes |
| Event | 10th International Symposium on Physical Measurements and Signatures in Remote Sensing, ISPMSRS 2007 - Davos, Switzerland Duration: Mar 12 2007 → Mar 14 2007 |
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Keywords
- Hyperspectral Data
- Leaf Optical Properties
- Modelling
- Pigments
- Remote Sensing
ASJC Scopus subject areas
- Information Systems
- Geography, Planning and Development
Cite this
An advanced leaf optical properties model including photosynthetic pigments. / Feret, J. B.; Asner, G. P.; François, C.; Martin, R.; Ustin, S. L.; Jacquemoud, S.
In: International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, Vol. 36, No. 7/C50, 01.01.2007.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - An advanced leaf optical properties model including photosynthetic pigments
AU - Feret, J. B.
AU - Asner, G. P.
AU - François, C.
AU - Martin, R.
AU - Ustin, S. L.
AU - Jacquemoud, S.
PY - 2007/1/1
Y1 - 2007/1/1
N2 - PROSPECT, a widely-used leaf directional-hemispherical reflectance and transmittance model, currently treats the behaviour of chlorophylls a, b, carotenoids, and anthocyanins uniformly, leading to errors. A finer discrimination among these pigments in light-absorbing plant tissues should improve the model. In this paper, a new calibration and validation phase of PROSPECT is performed using two comprehensive databases containing hundreds of leaves collected in temperate latitudes in Angers, France, and in a tropical environment in Hawaii, USA. Leaf biochemical (chlorophylls a, b, carotenoids, water, and dry matter) and optical properties (directional-hemispherical reflectance and transmittance measured from 400 nm to 2500 nm) were measured and used in the model development steps. The first step consists in providing distinct in vivo specific absorption coefficients for the leaf pigments using the Angers database. The model is then inverted to predict the biochemical content of intact leaves from both data sets. The main result of this preliminary study is that the new chlorophyll and carotenoid specific absorption coefficients are in good agreement with available in vitro absorption spectra, that the chlorophyll predictions are improved, and that the carotenoids are reasonably retrieved.
AB - PROSPECT, a widely-used leaf directional-hemispherical reflectance and transmittance model, currently treats the behaviour of chlorophylls a, b, carotenoids, and anthocyanins uniformly, leading to errors. A finer discrimination among these pigments in light-absorbing plant tissues should improve the model. In this paper, a new calibration and validation phase of PROSPECT is performed using two comprehensive databases containing hundreds of leaves collected in temperate latitudes in Angers, France, and in a tropical environment in Hawaii, USA. Leaf biochemical (chlorophylls a, b, carotenoids, water, and dry matter) and optical properties (directional-hemispherical reflectance and transmittance measured from 400 nm to 2500 nm) were measured and used in the model development steps. The first step consists in providing distinct in vivo specific absorption coefficients for the leaf pigments using the Angers database. The model is then inverted to predict the biochemical content of intact leaves from both data sets. The main result of this preliminary study is that the new chlorophyll and carotenoid specific absorption coefficients are in good agreement with available in vitro absorption spectra, that the chlorophyll predictions are improved, and that the carotenoids are reasonably retrieved.
KW - Hyperspectral Data
KW - Leaf Optical Properties
KW - Modelling
KW - Pigments
KW - Remote Sensing
UR - http://www.scopus.com/inward/record.url?scp=85069745924&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85069745924&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:85069745924
VL - 36
JO - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives
JF - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives
SN - 1682-1750
IS - 7/C50
ER -