Activities
Partial removal of vegetation
This involves felling trees growing outside the forest, which will have to be permitted by the Šumava National Park Administration (in the Pod Borkovou Nature Reserve) and the town of Horní Planá outside the Nature Reserve. The project assumes that approximately 2,100 m3 of rough timber will be extracted using a DVT. Another approximately 500 m3 will be extracted using a JMP and transported to the OM. In total, we expect to transport 2,600 m3 of rough timber to the collection point (2,200 m3 within stage I and 400 m3 within stage II). This wood will be sold in 2 m and 4 m assortments. We also expect to harvest 3,400 m3 of rough timber, which will be left on site and placed in the drainage channels between the barriers. In total, a maximum of 6,000 m3 of rough timber will be harvested. To this can be added a rough estimate of 1,700 m3 of brushwood, of which approximately 700 m3 will be used to create travel routes. The rest will be bound into small dam cylinders and placed in canals together with the rough wood. These are the maximum volumes of wood harvested. They may be reduced when marking out the harvests.


Earthworks will consist primarily of modifying the relief of the area (dismantling peat deposits), removing sod in selected areas, excavating foundations for dams, backfilling canals, creating and modifying pools, infiltration and spill areas, excavating a new watercourse bed and transferring peat-forming vegetation. They will follow the deforestation of the areas, mainly before the start of construction work on the dams. An important rule for all earthworks is to avoid compacting the peat (do not smooth, compress, flatten, etc.). The only exceptions are backfilling around dams and backfilling in trenches.
Earthworks
These are 1 m long and 0.3 – 0.5 m in diameter, made of birch brushwood and placed at the bottom of flooded ditches. The aim is to fill the space of the drainage ditches as much as possible and to achieve the lowest possible water column in them. The branches used should not be thicker than 1 cm. They will be tied into cylinders (sized according to specific ditches) with biodegradable rope. The material will be obtained mainly from harvested birch trees, and to a lesser extent from other tree species. It is estimated that 1000 m3 of brushwood will be used.
Creation of a weir dump
Barrier type I. - A simple wooden barrier is intended for blocking shallower (up to 1 m) drainage channels up to a width of approximately 2.5 m. In the enlarged version up to a width of approximately 4 m.
Dam type II. - The double dam is intended for damming larger, or possibly more erosion-prone sections of drainage channels with a depth of over 1 m and a width of up to 2.5 m, or in an enlarged version up to 4.0 m or more.
Type III dam (driven dam wall) - A driven dam made of spruce or Douglas fir profiled planks is intended for damming drainage channels in deep peat with a trench depth of over 1 m and a sufficient layer of peat at the bottom of the channel (minimum 60 cm).
Barrier type IV. - A simple wooden barrier is intended for blocking smaller drainage channels with a depth of 1 - 1.5 m and in places where the bottom of the trench is not made of peat.
Construction of wooden bulkheads
This mainly concerns the restoration of temporarily occupied areas and transport routes to their original state. These are mainly the areas of the construction site equipment and the wood storage, which will be located on adjacent meadows. The panel road, which will serve as the main transport route for stages I and II, will also be dismantled. If no further use is found for the weir mats in the surrounding forests, they will be stored in place of the panel road. This will allow access to the site in the coming years and their gradual distribution will take place. All areas damaged by construction activities outside the revitalization area (construction site equipment, collection point and transport routes) will be recultivated. This mainly concerns areas on plot 711/1 in the Pestřice cadastral area. The disturbed surface will be leveled with an excavator, tractor or grader, sown with a suitable clover-grass mixture and rolled. It will continue to serve as pasture there.
Additional work
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