Since it had ben recognised lot of ecological problems about all kinds of Wetlands people had started to think aout their conservation.

Thera are many problems with wetlands:

• Firstly they had been reclamed by dranage for agricultural usage .
• Peat was removed in the first half of the 19th century as fuel (mazut ) later on more and more as additiv or itself for groving substratum for gardening.

By reclamation and tilage apeared problem of mineralisation of peat.