The bold bit is funny because this evening I had this very idea, all by myself. I was dead chuffed and thought I would come here and show off. Fat chance .
Well, here is an article from 2002 explaining the idea:
Forestry Operations
There is nothing new under the sun
That was pre-C3C, where a forest chop still took 10 turns. Now in C3C, where forest chopping costs only 4 turns, this technique is of course much more powerful.
But the thing is, it didnt work when I tried it. 3 workers to plant a forest and 2 to chop it down. Result: nothing. I must be doing something wrong. Good wheeze though.
You can harvest each tile only once. So if there had already been a chop on a certain tile, planting a forest and chopping it again, will give you nothing.
So in the beginning, people had to draw little maps while playing, keeping track of which tiles had already been harvested and which not... So tedious.
Nowadays we fortunately have CivAsstistII, which provide this information.