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Part of the poitevin
marsh is a classified site, as for example as well as the Mount St Michel. The
most known zone is around Coulon and is called "Venise Verte" which means green
venice.
The marsh
includes/understands two great areas: The marsh known as desiccated, near to the
edge of sea, which is a zone of polder protected from the floods by dams. And,
the marsh known as wet which is located upstream desiccated marsh and which
plays a plug part, since one does not hesitate to flood it to protect the large
cities, and the zone of polder. Each inch of the water level is controlled by a
whole system of locks.
The richness of the marsh
poitevin, precisely comes from these floods which deposit each winter a very
fertile layer of silt. This richness is not a myth, since at the beginning of
the century, one hectare of marsh was worth twice expensive than a hectare of
plain.
But agriculture then evolved
to the intensive, mechanization, the overproduction and all the confusing
systems of premiums which are associated there. Thus, the marsh lost its value
and it is now the reverse, since one hectare of marsh is worth twice less than
one hectare of plain.
Historically thus, this medium was rich, and we think that it deserves again to
be exploited and maintained. Unfortunately, the marsh seems now to be an
abandoned museum and without much interest, which one visits in the boat and at
the full price.
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