My aim is to create a model that calculates the carbon sequestration for a selected forest type, for a range of time periods (5, 10, 15, 20 yrs) within a user defined study area within mainland Britain. So far I have a raster layer with the land cover % for Britain (MODIS fractional tree cover) and a excel spreadsheet with the cumulative and yearly carbon sequestration rates for 17 tree species over the given time intervals.
How do I combine the sequestration rate with the tree cover data? Is there a specific tool that would help me? Also, no iterations need to be used.