Barnbruch

52.4564310.65262Koordinaten: 52 ° 27 ' 23 " N, 10 ° 39' 9" E

The Barnbruch in Aller- glacial valley is a wetland of international importance, which offers many endangered species of bird, amphibian and insect species habitat. It lies between the cities of Wolfsburg and Gifhorn and consists of a closed forest area of around 1,500 hectares with surrounding meadows and pastures. The lowland area is divided equally between Wolfsburg urban area and in Gifhorn. The Barnbruch is adjacent to the 15 km eastern Drömling the ecologically most valuable lowland area in the upper reaches of the River Aller.

Location

The Barnbruch with dimensions of about 4 x 7 km is limited:

• To the west of the Elbe Lateral Canal and the Tankumsee artificially created (municipality Isenbuttel )
• In the north of the Aller and the places and Osloß Weyhausen
• To the east of the industrial plants of the Wolfsburg Volkswagen factory
• In the south of the county road K 114 ( Nordtangente Wolfsburg Gifhorn ) and the place Calberlah

Drainage

Originally Barnbruch was a marshy swamp forest. That was 1830 reason for the inhabitants of the neighboring villages, to complain to their king. You have for years no hay harvested and their farms were ruined by years of flooding. With the treaty between Prussia, Hanover and Braunschweig on the regulation of the Aller and the ear 1860, the drainage work began. For drainage was mainly due to the 1860-63 dug Allerkanal between Wolfsburg and Gifhorn. The drainage converted the marsh in a wetland with species-rich forest communities in which there are break and swamp forests with birch, oak, ash and alder. Today, large parts of the Barnbruchs nature reserves, in which some areas are left to their natural evolution without human interference.

Forest land

Until 1770 the marshy swamp forest forestry was undeveloped. Only on individual raised spots (sand dunes of glacial origin) grew pines. The high- groundwater and periodic flooding made ​​from alder wood, the human use remained largely closed. 1833 had in Barnbruch softwoods, especially the alder, an area ratio of 82 %, the jaw only 1%. 1875 had changed fundamentally as a result of dehydration of the forest stand. The alder only took another 42 % for pine and birch forest had a share of 51 %.