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Plot sampling or run for whole landscape
I am in doubt how to use the InVEST model on a certain landscape.
I need to compare forest certified situations in the landscape with non certified situations in the landscape (approx. 453,000 ha).
My first thought was: divide the landscape into sub landscapes which are approximately homogenous in climate and topography conditions and then do a random selection of plots (of 5 ha) in each sub landscape to run the InVEST model on each of these plots.
Is it better to run the model on the whole landscape first and then separate the outputs into the selected plots or vice versa (run the model for each of the plots separately)?
Or is there even a better methodology for this kind of problem?
Many thanks in advance!
I am looking forward to the answer!