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Herba Polonica
|
2009
|
tom 55
|
nr 3
304-310
The small dendrological garden in Glinna (about 5.5 ha) near Szczecin (northwest Poland) is well known for growing a lot of unique trees. The local mild microclimate in combination with the Atlantic climate of West Pomerania produce favorable conditions for growing many varieties of trees and shrubs which go freeze in the central and eastern Poland. The garden’s collection amounts to 750 taxons of trees and shrubs, representing 220 species. What is valuable in the collection of the arboretum is that the cultural varieties of the plants make only 14%. The special collection of the Garden are species of Chinese origin (200 taxons) and maples (65 taxons). Basing on the data from the literature, over 147 taxons used in conventional and unconventional medicine as well as in country medicine were distinguished, among which plants of Asian origin (mainly from China) predominate. This work presents the characteristics and the crop obtained from trees and shrubs rarely grown in Poland that possess medicinal properties, among others: Cunninghamia lanceolata, Torreya sp., Acer davidii subsp. grosseri, Asimina triloba, Broussonetia papyrifera, Clerodendrum trichotomum, Chaenomeles cathayensis var. wilsonii, Diospyros kaki, Eleutherococcus sp., Eucommia ulmoides, Lindera benzoin, Magnolia officinalis var. biloba, Phellodendron sachalinense, Poncirus trifoliata, Sassafras albidum, Symplocos paniculata, Zanthoxylum piperitum, Zanthoxylum simulans.
The paper is an attempt to assess thermal conditions in the Dendrological Garden in Glinna against the conditions of the mesoregion of the Szczecin Coastal Region, as represented by five stations (Lipnik, Ostoja, Szczecin, Świnoujście, Kołobrzeg) in a study period of two years (May 2014- April 2016), based on measurements of air temperature taken at 200 cm a.g.l. Spatial variation of thermal conditions of the analysed area was found to be very large and was statistically confirmed. Mean air temperature in the analysed period in Glinna was 10.2°C which, in comparison with the other stations, proved to be the highest value. The absolute minimum, i.e. -12.7°C, was recorded in Glinna in January 2016 and the absolute maximum of 35.6°C in August 2015. It was shown that for the purpose of the assessment of thermal conditions in Glinna on the basis of mean air temperature from the 24-hour period, it is justified to refer to multiannual data from IMGW station in Szczecin. On the grounds of minimum temperature, amplitude, time of occurrence of spring and autumn frosts, as well as the number of days with frost and cold days, it was shown that the Dendrological Garden in Glinna has more favourable thermal conditions than the neighbouring areas.
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