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More on Resource Depletion Timescales
The timescale again is given by the following which we derived earlier:
where k = growth rate
R = total resource available
ro = initial consumption rate
Some examples to do in Excel. Calculate resource depletion time scales for various values of k.
Now in the real world, consumption curves are modified by economics and so may look something like this.
Another example of this difficulty is provided by the following data:
1920 39000 1930 54000 1940 69000 1950 125000 1960 163000 1970 213000 1980 275000 1990 283000 2000 323000 2030: ???