Zweifaller and Rotter Wald
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Zweifaller and Rotter Wald
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.jpg) Lehnsbach spring with high moor |
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| location | Roetgen , Aachen city region , North Rhine-Westphalia , Germany | |
| surface | 2659 ha | |
| Identifier | ACK-110 | |
| WDPA ID | 344790 | |
| Geographical location | 50 ° 41 ′ N , 6 ° 15 ′ E | |
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| Setup date | 2005 | |
| Framework plan | Landscape plan Roetgen | |
| administration | Lower landscape authority of the Aachen city region | |
The nature reserve Zweifaller and Rotter Wald lies in the area of Roetgen .
description
The very large nature reserve is divided into the following sub-areas:
Beech and oak forests with Lensbach upper course
In this part of the nature reserve there are old mixed deciduous forests on flat slopes. On the lower slope, a beech - oak - hall forest with medium to thick tree wood dominates. Where there are wind break areas, clearings have formed and the ground is rich in herbs . The beech-oak forest stretches far up the slope in the southeast. There is also a group of old wood and remaining dead wood trunks with woodpecker holes. The upper slope is usually dominated by an oak forest rich in ilex or underlain with spruce . Two small wet galls with vegetation rich in sedge and alder forest rich in pipe grass are stored in the forest . The Lenzbach flows on the southeast edge, in the upper reaches, through a Molinia- Betula forest and an open area rich in pipe grass.
Northern section of the Krebsbach with deciduous forest stands
The Krebsbach, in the area of the Stolberg district, flows meandering and close to nature. On the banks is an alder meadow forest rich in peat moss . Iron ocher precipitates have formed locally . After the confluence of the Krebsbach with a side brook to the west, the brook flows through a young alder and birch forest into a partially drained tallow area. Stream morphology and stream bed structure are multifaceted. In the lower section, two small side valleys flow into the main valley from the right. A one meter wide stream flows through a northern side section, the bottom of which is covered with a red surface. The source region is tree-free. Molinia dominates the herbaceous layer. The moss layer is abundantly developed. The southern part is 10 to 25 meters wide and locally overgrown with downy birch , black alder and gray willow. The herb layer consists of Tolinia carulea and Juncus acutiflorus . On an eastern slope of the valley to the Krebsbach there are mixed deciduous forest stands of oak and beech, and on small areas mixed stands of beech, larch and spruce. In the deciduous forest stands there are large areas of 80 to 150-year-old remains of beech and sessile oak with a trunk diameter of up to 0.8 meters, where the shrub layer is usually missing. A closed, species-poor herb layer can only be found locally in beech-oak stands.
Upper course of a right tributary of the Lensbach
Here is the valley floor of a brook valley in the forest. A paved path cuts through the area. The larger part above is heavily wetted. The valley floor is 20 to 40 meters wide and overgrown with mostly multi-stemmed alders up to 15 m high. In the shrub layer there are buckthorn and alder cane rashes. The herb layer is formed by Molinia, on drier areas bracken dominates. Peat moss is abundant locally. The wet forest is drained by two shallow ditches and the slightly deepened stream. The other part below the path is drier. Bracken predominates in the herb layer. Sphagnum is only on the immediate bank of the stream.
Oak trees
To the east of Hahner Straße is an old high oak forest , mixed in the edge area with older beech and spruce trees. The herb layer is species-rich depending on the degree of coverage. To the south, the oak forest merges into an undergrowth-free beech and oak forest. In an easterly direction, on the Lenzbach, there are pine and larch stands. The Lenzbach valley itself is covered with alder and birch trees, but also with spruce trees. Outside of the dense spruce forests, the herb layer covers the ground with, for example, pipe grasses. There is a 30 by 15 meter large extinguishing water pond in the area . A third of the water surface is covered with pondweed , the banks are lined with young trees and marsh plants.
Planned forest NSG Zweifall northeast of Hahner Straße
Mainly beeches grow here on slightly sloping locations. Coniferous forests made of spruce and larch are stored. The beeches have different ages. Most of them are dominated by forestry and have only a few undergrowths. The oak stands are in the middle to older tree age, with undergrowth rich in shrubs and herbs. Natural spring brooks flow through the forest, the typical bank vegetation is missing here due to the shade. To the south-east of Mulartshütte , in the forest, there is an approximately 0.75 hectare large, heavily wetted open space that is used for hunting and is covered with a species-rich pipe grass meadow with embedded willow bushes and fragile groups of birch trees.
Planned forest NSG Zweifall in the Hürtgenwald between Süssendell and Zweifall
Soils that are poor in nutrients and waterlogged are widespread here. Here, too, beech forest is predominant, as a sparse grove beech forest, grass clown beech forest and moist oak-beech forest. The stands are dominated by forest from young to middle age. Where there are old stands, there is a layer of bushes made of natural regeneration, along with holly. There are several deeply cut stream valleys in the area.
Small stream valley at Forsthaus Jägersfahrt
To the north of the Jägersfahrt forest lodge is a small valley with a narrow brook 50 to 70 cm wide. It meanders through the valley floor, on the side of the steep and sliding banks. The stream is scree with small pools. On the sides is alder forest, with transitions to alder break. Some depths of the spring flow in from the slopes. There is beech forest on the slopes. At the forester's house is a small, springy green area and an orchard with rocks.
Planned forest NSG Zweifall in the Hürtgenwald between Zweifall and Mulartshütte
Another beech forest is located between Zweifall and Mulartshütte. Soils that are poor in nutrients and waterlogged are widespread here. Here, too, the beech forest is poor in species as a grove-beech forest, a clown-beech forest and a moist oak-beech forest. The stands are dominated by forest from young to middle age. Where there are old stands, natural regeneration takes place, together with a layer of bushes with holly. The Vollerbach, west of Mückenloch, runs close to nature in a small Kerbtal valley and is accompanied by an alder forest.
Mixed oak and beech forests on the Gieschetbach
Here is a mixed deciduous forest with trees of different ages. In roughly equal parts there are thick oaks with beech admixtures, as well as mixed oak-beech forests. The individual age groups stand together. In the older areas, the trees reach trunk diameters of up to 65 cm. The bush layer mostly consists of beech. In the southwest there are also spruce and larch plots.
Mixed oak and beech forests on the Hassel and Gieschetbach streams
Three isolated forest areas have a high proportion of hardwood. The south-western area consists of undergrowth-free beech canes. Beech trees with a trunk thickness of up to 70 cm are located north of the forest path. In places there is a dense undergrowth of spruce or beech. The herb layer is different, acidophilic species dominate. The middle part is made up of old oak and beech trees with trunk diameters of up to 70 cm. Bracken and a closed blueberry stand can be found under the oaks. The eastern sub-area is an old oak beech tree with gnarled trees, trunk diameter here up to one meter. The stock has been depleted and accordingly has dense beech undergrowth.
Gieschetbach upper reaches
Here are the two near-natural upper reaches of the Gieschetbach with the wood on the banks. The streams are 0.5 to 2 meters wide. The bottom of the stream is gravel with boulders covered in moss in places. The gradient is steep, with small bumps, cascades and bottom drops. The banks of the stream are made up of alder trees that are wet from the spring and rich in peat moss. After the confluence, the alders are up to 18 meters high, sometimes as poles. Spruce forests connect to the alders up the slope.
Left tributary of the Lensbach south of Rott
The area includes a narrow stream, including the adjacent forests. An asphalt path crosses the valley in the upper reaches. Above the path there is a spring hollow with alder and peat birch trees. Below the stream flows into a ditch accompanying the path. The stream flows through a six-meter deep notch valley. The slopes are steep and overgrown with oaks. The valley floor is wet from the spring and overgrown with peat moss. In the northwest is a peat moss-rich wet birch forest with alders.
Alder and moor birch quarries in the Solchbach valley
The middle and lower valley of the Solchbach consists of moist alder and bog birch forests, as well as sand birch and alder stocks. In some places there are spruce forests and small bodies of water. To the north there is a swelling, wet stock of young alders. Here on the western edge of the alder is a poor, partly heavily wet, wet grassland fallow. The stream flows into an artificial 40 by 15 meter large pond with dense dwarf rushes. The pond's runoff flows through an area covered with young alders. The undergrowth consists of pipe grass and other water-loving plants such as swamp violets . To the west is a near-natural still water with an alder border. The stream is crossed here by a forest path. To the north is another playing area overgrown with tall herbaceous vegetation and alder trees. The stream here is 2 meters wide and up to 2 meters deep and runs in a straightened bed. To the east is a light moor birch forest with individual oaks and spruces. Here are also dead trees that have woodpecker holes.
Hasselbach Oberlauf with old deciduous forest areas
The Hasselbach flows through large deciduous forests on the slopes of the valley in the Roetgen and Stolberg districts. The valley floor is 10 to 20 meters wide and covered with spruce forests. In some places the spruce trees have been removed for 2 to 10 meters on both sides of the stream. Individual alders and moor birches in the dry bank area could remain. The bank area with up to one and a half meters high, undermined banks was left. A drainage ditch runs parallel to the stream. A side stream flowing into the south-east has a swelling to wet section with moss and fern-rich alder swamp in the middle section of the valley. North of the Mulartshüttener aisle, the Hasselbach is two to four meters wide and flows through a spruce valley until it joins the Krebsbach. The Bachtal is completely preserved, including the steep banks and scouring. In the north of the valley there are two open spaces wet from the spring, the larger one arose from a wind throw. On Hardstraße, on the eastern edge of the area, there is a mountain meadow rich in species and orchids near a refuge.
Protection purpose
The habitats for many plants, fungi and animals in NRW that are endangered according to the Red List are to be protected . The objectives are the conservation and development of the following natural habitats in accordance with Annex I of the Habitats Directive:
- Bog forests
- Alder-ash and softwood floodplain forests
- Running waters with underwater vegetation
- Grove beech forest
These biotope types to be protected can be found in this area: springs, wet and humid grassland, near-natural and undeveloped stream sections, poor meadows , moors, alluvial forest and swamp forest.
See also
Web links
- Nature reserve “ACK-110 Zweifaller und Rotter Wald” in the specialist information system of the State Office for Nature, Environment and Consumer Protection in North Rhine-Westphalia