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8 9 the extinction of the Elm tree specie, makes up the species. Old Oaks suffer from light inadequacy due to protected landscape area. Beeches have a rather negative influence on the large part of the existing Strong Elm. The Wych Elm the presence of the neighbouring semi-shade tolerant ecosystems of the Auenwald, especially if they were appears also as incoming montane specie in the and shade tolerant tree species such as the Maple and The species of the snowflake, (Leucojum vernum) planted as monocultures. Due to the high ground water southern part of the Auenwald. common beech. Consequently, the so called “femel which is endangered in the other parts of Saxony table the trees do not grow cord form roots, which are Besides, a number of Bastardies were found between gaps” were realised in the winter of 1996/97 at the County appears frequently in the Auenwald of Leipzig typical for common beech, but concentrate the root the Wych Elm and Field Elm. These as well possess “Rear” Rosental. As a result a good number of the old than the rest of Central Europe. At this point the system directly under the surface. great resistance against the dying of the Elm. oaks were freed from the competition pressure snowflake makes its absolutely limited northern emerging from the semi-shade tolerant and shaded boarder. This leads to an extreme extraction of nutrients and EXCURSION POINT tolerant tree species and additionally, growing areas for oxygen in the topsoil layer. Leaf litter does not rot as 11 the regeneration of this tree species were created. quickly as in stands of hardwood typical to the floodplain, which Area for the ecological control of the state The entire area in the Rosental of the cultivated plant results in a relatively large layer of section is about 1.6 hectares. In autumn 1997, this organic material. This layer is of the forest with respect to the Oak tree area was to a great extent planted with the Oak rather atypical of sites in the species species. (Approximately 18000 pieces). Moreover, floodplain and stops the growth of there was a natural regeneration appearance of the typical floodplain geophytes. At the moment the city forest’s administration is oak in some of the gaps as was noticed. In some of the applying mainly 4 categories to assess the health gaps, which were portraying swampy conditions, the Another change is the intense status of the city forests. shading by the dense beech growns, which prevents the - The constant observation and control by the foresters regeneration of shade intolerant and all employees of the department of city forest. trees and also leads to the - The report to the forest’s state from the Freistaat decrease of other thermopile Sachsen (Free State of Saxony), which is based upon plants and animals. and derived from experimental sites in the region of Leipzig. In the future it is planned to - The vitality interpretation of the Colour-Infrared-Air- reduce Common Beech stands pictures, which are prepared every after 5 years and especially in sites where they - The so-called ecological forest state control of 10 compete with precious English experimental sites of which, each consists of 30 trees Oak and where regeneration sites of the Oak species. for photofilous trees are needed. The hybrid Anemone lipsiensis, a crossing between the However, it is not planned to fell each and every beech The marked and continuously numbered trees from the wood anemone (Anemone nemorosa) and yellow in an indiscriminate manner. experimental site are individually code assessed, with windflower has been specially named after Leipzig. The possibly the same code, in the late summer of every Anemone lipsiensis occurs in the gardens of the Due to their appearance they are an enrichment of the year by exactly the same person. Rosental and close the district of Schkeuditz. To the landscape aesthetics. Numerous holes in beech trees ecological important red alder (approx. 3500 pieces) The research officer examines the crown structure, the well-known blossoms in spring are the ramsons (Allium can serve as brooding and breeding spaces for rare were planted. leaves density, the leaf colour change and lastly the ursinum), which are related to garlic. In the month of species of birds. vitality. May, when it blooms, it spreads its penetrative garlic The well noticeable floodplain ditch in this Excursion scent. Grades scaling between 1 and 5 are hereby allocated, point is part of a network of the drainage ditch system whereby the grade 1 is the best and the grade 5 the that was earlier laid out in the middle age, which worst grade. As a result of the control measures originally was probably trapezoid-shaped. Because carried out since 1991, one can conclude that despite Leipzig in this period was an area with malaria cases, EXCURSION POINT 13 massive environmental stress the average state of were measures taken to let the still water of the early health of most of the tree species in the City forests yearly springtime floods quickly flow away. and also the common Oak tree species are relatively Oak cultivation and the common beech stable and healthy. EXCURSION POINT 14 EXCURSION POINT It has already been mentioned that to the semi-shade 12b tolerant tree species of the oak, as compared to the EXCURSION POINT 12a other typical floodplain forest tree species, adequate source of light is a necessity. Common maple (Aces campestre) The blossoms in spring Oak plantation / Ditches of the floodplain By the laying out of the of the regeneration site, plants In the year 1991 the Deutsche Kontrollvereinigung für During the springtime the Rosental is remarkably that are predominantly not suitable and alien to this site forstliches Saat – und Pflanzgut e.V.(German The ecological important Oak tree species require beautiful due to the colourful and splendid blossoms were slashed down. Due to this fact, the common Association of Controls of Forestry Seed and Seed much light for their development. Therefore it is not that cover the forest grounds. According to § 22 of the beech was preferred to the other species. Stocks e. V.) chose the stock of the Common maple of possible to plant the Oak (unlike the lime tree and white Saxony County’s nature conservation law, the “spring the forests department 261 as specially qualified and beech) underneath the existing semi-shaded tree snow flake sites I and II” are since 19.06.1991 a these were approved and accredited with the 10 7 identification This means, relatively quite a larger population of the In 1986 the park of the blind was completed and it was "Kontrollzeichenherkunft: senior oak was left to be later used as building timber. the first park facility of its type. Orientation for the blind EXCURSION POINT Stadtwald Leipzig”. The so-called “lower wood” consisted of root and takes place by the means of a touchable bronze relief 10 This was an important coppice shootings of Aspen, Hornbeam, Basswood in the entire garden and illustration are in Braille. Within step in terms of gene and Elm. These were cut down after every 15-20 years conservation and to serve as firewood. Strong Elm-Flutter Elm (Ulmus Laevis) dispersal. The in Leipziger Stadtwald following are the Strong oak thereby developed the today distinguishable requirements needed typical form and this consequently led up to the height This elm is the one of the last still existing strong elms for recognition as origin of the “lower wood” into quite a straight form without in the Leipziger Stadtwald. control character with branches. At the height of about 10 – 15m, a wide Height: 32 m respect to the field are crown, which can be comparable to park trees, Diameter at breast height (dbh): 1,10 m amongst others, developed. Compact wood mass: 14,5m3 - A minimum age of 50 After the The Fungi Ophiostoma ulmi, which firstly made its years husbandry appearance in 1919 in Holland and two years later in duty of the Leipzig caused the dying of elms (also called Dutch - A top upright growth average dying disease) in the 60s at a considerably rate. The height woods reason for this sudden, extreme and rapid dying is - No or just few spiral like Ash, certainly complicated but is connected with the grain growths Maple and appearance of the new aggressive germ Ophiostoma Elm grew the park facility there are some ground markings, which novo ulmi. - No or a just few from the are “readable” with a blind man’s cane.The planting fluting bottom and arrangement of the garden facility is carried out This has led to a fall of the quota in the Elm species woods to a with respect to a system whereby plants are selected from the top canopy of the Leipziger Auenwald. While EXCURSION POINT 15 height and according to the sense of “smell, feeling, hearing”, such in 1958, the percentage of elm trees was 13 %, today it partially as scent and spice plants, plants with noticeable is has dropped to almost 0 % . In the year 1998, about darkened the differences in the leaves, fruit, sprout and flower 315 pieces of all strong elm The Strong Oak in the Hinteren Rosental crowns, structures. The garden facility is rounded up with trees found in the forest, which “feelable” plastic type of plants.The location of this park which possessed a In 1998, several mappings of strong trees were carried resulted into is situated at the transitional area from Großer (great) diameter at breast height of out in the Leipziger Stadtwald. Furthermore, all Strong the withering to Kleiner (small) Rosentalwiese (Rosental meadows).