jamal9722060
Has anyone calculate the carbon content of the forest based on an image of band4 and band5?
The method:
Biomass Volume = - 478.58 + 4.5041 × ND45 (Mt/ha)
ND45 = 128 × ((TM4* - TM5*) / (TM4 + TM5)) + 128
Carbon = Biomass Volume × 0.5 (Mt/ha)
Critical point:
• The vegetation index ND45 includes water. Then how to extract the forest from this index? Based in which values?
• Do we need to process the pixel values of ND45 according to the average over 11x11 pixel window? Does this affect the result and the approach?
• As the result of this approach is a raster that contains the values of carbon at each cell in (kg/ha), then is it correct to calculate the weight of carbon at each cell by multiplying the value of that cell with its area and then to sum all of these values up? Should we convert the area of the cell to ha (hectare) first or this is included in the equation?
• Is this approach applicable if we have an image from Landsat ETM+?
The method:
Biomass Volume = - 478.58 + 4.5041 × ND45 (Mt/ha)
ND45 = 128 × ((TM4* - TM5*) / (TM4 + TM5)) + 128
Carbon = Biomass Volume × 0.5 (Mt/ha)
Critical point:
• The vegetation index ND45 includes water. Then how to extract the forest from this index? Based in which values?
• Do we need to process the pixel values of ND45 according to the average over 11x11 pixel window? Does this affect the result and the approach?
• As the result of this approach is a raster that contains the values of carbon at each cell in (kg/ha), then is it correct to calculate the weight of carbon at each cell by multiplying the value of that cell with its area and then to sum all of these values up? Should we convert the area of the cell to ha (hectare) first or this is included in the equation?
• Is this approach applicable if we have an image from Landsat ETM+?