On Mon, 7 Jul 2003 01:38:31 +0000 (UTC),
(Andrew Stephenson) wrote:

I am writing a work of fiction and need to get a "reality test"
feel for how many people a square kilometer (etc) of land could
plausibly be expected to support.
snip specifications
Would anyone care to guess at the productivity of 8.3 square Km?

Vaclav Smil, who is often quoted as an authority in these matters,
says about 5 people per hectare could be sustained under the
specificied conditions (fertile farmland, but no artificial
fertilizers), that would be about 4-5000 people on the 8.3 km2.