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Ten years after the Kyrill hurricane in Sumava: Nature knows how to handle herself

Ten years after the Kyrill hurricane in Sumava: Nature knows how to handle herself On the night of 18 to 19 January 2007. Europe swept by hurricane Kyrill. In Sumava forests uprooted or broke about a million cubic meters of wood. In the subsequent six years after Kyrill Administration of the Šumava National Park recorded 2.6 million cubic meters of dead bark beetle trees, about half of which were mined and the other half retained on site zetlení. Hurricane was also an opportunity to begin to return mostly spruce forests of fir, cranes, maples and beeches.

"We have time to enjoy peace after warding off the bark beetle gradation of the late 90s and we thought that we had nothing worse than waiting," says Director of the Sumava NP Paul Skinny. "But when you fight the bark beetle and actually does nothing before forming larger or smaller clearings and open so-called stand walls. This means that the revealing trees that never grown on sunlit place, and therefore have a short crown and long trunks, which are a delicacy for the storm, "he continues Skinny. And just such growths which additionally located at higher altitudes and were about a hundred years old, I could not resist

Kyrill

. Hurricane refuted trees in areas such Polom, the throne, the Black Lake and the mountains, above the source of the Vltava or near Meridian.

"In the forest, which was the late '90s left by bark beetles, Kyrill caused virtually no windfalls. So even leaving the forest nature may eventually lead to the fact that future gales disprove fewer trees, "Paul says Lean." Great gale passed through Šumava always refuted and ancient trees in the forests. "

In the subsequent six years after Kyrill Administration of the Šumava National Park recorded 2.6 million cubic meters of dead bark beetle trees, about half of which were mined and the other half retained on site zetlení. "Leaving a territory without intervention, together with the processing of some areas and leaving only the bark-stripping all the mass timber on the station, there was a significant enrichment of the territory the decaying dead wood," says the deputy director of the Šumava National Park Conservation old Martin.

"The subsequent investigation and scientific studies have shown that dead, rotting wood and its structure significantly affects many protected and endangered species and must be an integral part of a healthy forest, which has to perform functions other than just economic gain," says Martin Old.

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As informs Sumava National Park, where the mined areas, most areas of afforestation. They were planted and still are planted trees that enrich the prevailing raid spruce in places where it could occur, for example, fir, cranes, maples and beeches. But there are places that are not allowed to afforestation and watched as it evolves.

"After these ten years, we can confidently assert that natural regeneration nezásahových in both territories and on mined areas where we nezalesňovali represents an average of 6,000 trees per hectare after. Mostly it is again a spruce, roughly 75 percent, followed by the crane, beech and fir, "says director Paul Lean.

It is certain that more hurricanes and possible windbreaks in Sumava we again expect. For example, between 1977-2007 were recorded in Šumava about 20 times the wind speed exceeding hurricane force. Strong winds and windbreaks are therefore in Sumava commonplace, and sooner or later turn causes windbreaks in the forests of Šumava National Park. According to the deputy the editor for forest ecosystems depends Jan Kozel range of future windbreaks on many factors such as seasons, the condition of the soil - whether it is waterlogged, dry or frozen. It also depends on the printed representation of forest at a certain stage, age and the like.

"In any case it is not necessary windbreaks caused by natural forces, such as storms, icing, etc., regarded as a tragedy. Nature already proved many times, most recently just after Kyrill, that such disturbance may actually benefit by giving the chance to live a different animal and plant species. Les disappear, because the forest is locally still only make room for a new generation. Only a man would have more respect for the laws of nature and be patient, "concludes
Paul Lean.


Source:

Ekolist.cz



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