On Tue, Jul 21, 2009 at 9:13 PM, Greg Troxel<[email protected]> wrote:

> yes, land_use=forestry perhaps implies land_cover=trees,

Not when they've all just been chopped down :-)

land_use=forestry
land_cover = mud_treestumps_and_woodchips

But seriously, there's a difference between an area being used for
forestry and an area covered in trees, and in the Venn diagram there's
no empty sets. Which makes them orthoginal.

Cheers,
Andy

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