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ŠUMARSKI LIST 3-4/2000 str. 83     <-- 83 -->        PDF

D. Böhm; RlIiRLSIJH U AKVATORI.IU NACIONALNOG PARKA PLITVIČKA JEZERA Šumarski list hr. 3 4.CXXIV (2000), 197-201


SUMMARY: The author gives a detailed explanation of the beginning and
course of ageing of the Plitvice Lakes, a gem of protected nature in the category
of national parks. This area has been listed into the world natural heritage,
run by the UNESCO in Paris.


The Plitvice Lakes are karst lakes on the substrate of dolomite and lime in
the category of travertine terraced lakes with numerous waterfalls and cascades.
They belong to a younger geological period and were formed after the
latest glacial period. However, there are clear indications and proofs that the
oldest travertine formations belong to the period before the penultimate
glacial period.


The ageing of the lakes is the result of long-lasting natural erosion of the
surface and pétrographie substrate. This process has been accelerated by the
activities of the man and particularly by large-scale cutting of natural virgin
forests on karst, whose protective role enabled the formation and evolution of
the lakes, and with whom they created a unique ecological macro-system.


The regressive process is rapidly spreading from the beginning to the end
of the water zone and represents an invaluable loss in both Europan and world
standards.


Since the end the Second World War, the Plitivice Lakes have been intensively
and ruthlessly exploited by the tourist industry. The overburdened nature,
the misguided building of roads through the very heart of the National
Park, the hotels located in inappropriate places and enormous numbers of
tourists have resulted in a worrying situation. The poor state of the area is further
aggravated by waste water, which threatens the Lower Lakes and the
River Korana.


The author proposes urgent measures to repair the condition, the use of excavator-
refueller and deposit removal. The starting point is the realisation
that the situation cannot be repaired fully, but the ageing process can be mitigated,
that is, postponed for a longer period. With regard to considerable
quantities of deposits, the removal operation will certainly take a long time.
The treatment does not allow any postponement. The authorised government
bodies should embark on the action immediately, and assistance from international
expert institutions is welcome.


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