On 11/16/10 1:40 PM, M∡rtin Koppenhoefer wrote:
2010/11/16<j...@jfeldredge.com>:
If you wanted to describe both the soil and what is growing on the soil, would
you use both a surface tag and also a landcover tag? For example, if you had a
sand dune stabilized by beach grass, would you use surface=sand and
landcover=beach_grass?
I think that this is a good question. IMHO surface doesn't qualify for
more then actually "surface", that's why I don't think of it as a good
tag for soil in general, because soil is comprising a whole layer (can
be up to some metres thick), which is not what surface is about IMHO.
in general, surface is a poor match to the needs of geologists,
as there is rather a bit more to geology than just the surface.
ditto for agricultural usage, surface is just odd and out of place.
some years a field may be corn, others soy beans, still others
something else. farmers do care about soil types, but a typical
modern soil type map is complex and something that doesn't
seem appropriate for openstreetmap.
richard
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