Details van artikel 163 van 218 gevonden artikelen
Remote sensing of biophysical variables in boreal forest stands of Picea mariana
Titel:
Remote sensing of biophysical variables in boreal forest stands of Picea mariana
Auteur:
Hall, F. G. Peddle, D. R. Ledrew, E. F.
Verschenen in:
International journal of remote sensing
Paginering:
Jaargang 17 (1996) nr. 15 pagina's 3077-3081
Jaar:
1996-10-01
Inhoud:
Using two hybrid radiative transfer models to represent conifer canopies and stands, algorithms to infer several important structural parameters of stands of black spruce (Picea mariana), the most common boreal forest dominant, were developed and evaluated. Spectral mixture analysis and multi-spectral reflectance data for 31 black spruce stands of varying density and structure were used to infer the values for the areal proportions of sunlit canopy, sunlit background and shadow fraction, which we call radiometric elements, and the areal proportions of these radiometric elements were strongly related to leaf area index, biomass density, and annual above ground net primary productivity. The best overall correspondence between the radiometric elements and biophysical variables was found from the shadow fraction obtained with the cone-based canopy reflectance model corrected for variations in solar zenith angle.
Uitgever:
Taylor & Francis
Bronbestand:
Elektronische Wetenschappelijke Tijdschriften
Details van artikel 163 van 218 gevonden artikelen