Forest ecosystem chlorophyll, content: implications for remotely sensed estimates of net primary productivity, 2003
Dawson, T.P., North, P.R.J., Plummer, S.E. and Curran, P.J. (2003) Forest ecosystem chlorophyll, content: implications for remotely sensed estimates of net primary productivity, 2003. International Journal of Remote Sensing, 24, (3), 611-617. (doi:10.1080/01431160304984).
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Current methods for estimating photosynthesis and hence net primary productivity (NPP) of forest ecosystems from remote sensing are based on the relationship between (i) the fraction of incident photosynthetically-active radiation absorbed by the canopy (fPAR) and (ii) spectral indices (e.g. NDVI). However, ground-based estimates of fPAR used to quantify this relationship for a specific vegetation type are derived from measurements of canopy structure only (e.g. using light interception methods such as hemispherical photography). Using a coupled leaf-canopy model of radiative transfer, we demonstrated that NDVI is highly sensitive to both canopy foliar and understorey chlorophyll content, which could account for significant errors in remotely sensed estimates of fPAR and hence NPP
|Subjects:||G Geography. Anthropology. Recreation > G Geography (General)|
|Divisions:||University Structure - Pre August 2011 > School of Geography > Remote Sensing and Spatial Analysis
|Date Deposited:||01 Mar 2005|
|Last Modified:||02 Mar 2012 13:04|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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