Regeneration of vegetation in manor park in Laskowice (Dąbrowa Forest District)

Laskowice is a village located in Kujawsko-Pomorskie Voivodeship, in Świecie Upland near Świecie. On the edges of the village there is a manor-palace complex established by Franz von Gordon in the first half of the 19th century. Since the palace was destroyed in 1945, the maintenance of the park was ceased. Currently the object is administrated by Dąbrowa Forest District. The aim of the study was to determine the direction of vegetation transformation of the park in the light of lack of use. Lack of human interference within examined object has initiated regeneration processes. At present the vegetation of the park refers to structure and species composition of natural forest plant communities. Phytosociological research carried out in 2015 and 2016 revealed the presence of following associations: Ficario-Ulmetum , Fraxino-Alnetum and Tilio-Carpinetum. Shrub vegetation of Rhamno-Prunetea class develops in places. Non-forest vegetation of meadows ( Arrhenatheretum elatioris ) and nitrophilous edges ( Urtico-Aegopodietum ) are present. In case of analyzed object the physionomy and species composition of forest communities differs from typical forms. An attention is paid to a strongly developed layer of brushwood. There is a lack of some characteristic species, alien species are present in treestand and shrub layers. A large share in phytocoenoses of Ficario-Ulmetum and Tilio-Carpinetum has Sambucus nigra and in case of the first association also alien species – Philadelphus coronarius and Symphoricarpos albus . Values of calculated indices of synanthropization confirm the regeneration of forest communities: index of natural character achieves value 40% and synanthropization index ranges from 48.78% for Tilio-Carpinetum to 60.00% for Fraxino-Alnetum

Dynamic tendencies and medicinal plants' resources of forest complex in Górzno-Lidzbark Landscape Park

S u m m a r y This paper presents floristic richness of medicinal plants occurring in Górzno-Lidzbark Landscape Park (NE Poland). More important medicinal species were set out in four habitat groups with profile of population resources and evaluation of their dynamic tendencies included. Furthermore, natural and anthropogenic (forest management) factors effecting increase or decrease in these plants' population resources were pinpointed. Species with large population resources that may be acquired for medicinal reasons from the area of the Park were selected

Relation between vegetation and soil in timber forest on example of permanent study area in Czarny Bryńsk (NE Poland)

The aim of this study was to examine connections between vegetation and soil distributions in permanent study area located in Urszulewska Plain mesoregion (NE Poland). Based on detailed cartographic soil and vegetation documentation referenced to the network of 270 study plots (cartogram method), a canonical correspondence analysis (CCA) was performed (Canoco program). The analysis of real vegetation and soils distribution revealed that plant communities distribution depend mainly on peat soils and soils lessivés and to a lower extent – on podzolized rusty soils. Similar results were obtained for potential natural vegetation – soil relation. CCA ordination diagram for potential vegetation and soils results in a clear connection of plant communities with soil types. Whereas in case of real vegetation and soils analysis relations are not so evident on account of the existence of degeneration and regeneration forms of forest communities. Distribution of the majority of coniferous forest species is correlated with occurrence of podzolized rusty soils. Nevertheless, some of the species are not connected with specific soil type and they occur in entire permanent area.Celem pracy było zbadanie powiązań między rozmieszczeniem roślinności i rozmieszczeniem gleb na stałej powierzchni badawczej, leżącej w mezoregionie Równiny Urszulewskiej (NE Poland). Na podstawie szczegółowej dokumentacji kartograficznej gleb i roślinności, odniesionej do sieci 270 pól badawczych (metoda kartogramu), wykonano kanoniczną analizę zgodności CCA (program Canoco). Analiza występowania roślinności rzeczywistej i gleb wykazała, że rozmieszczenie zbiorowisk roślinnych determinuje głównie gleba torfowa i gleba płowa zbrunatniała, a w mniejszym stopniu – gleba bielicowo-rdzawa. Podobne wyniki uzyskano dla relacji: potencjalna roślinność naturalna – gleba. Z diagramu ordynacyjnego CCA dla roślinności potencjalnej i gleb wynika wyraźne przywiązanie zbiorowisk roślinnych do typów gleb. Natomiast w przypadku analizy roślinności rzeczywistej i gleb zależności nie są tak ewidentne, w związku z istnieniem postaci degeneracyjnych i regeneracyjnych zbiorowisk leśnych. Rozmieszczenie większości gatunków borowych jest skorelowane z występowaniem gleb bielicowo-rdzawych. Jednak niektóre gatunki nie są związane z konkretnym typem gleby i występują na całej stałej powierzchni