Browsing by Subject "Pinus sylvestris"

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Access status: Open Access ,
Impact of air pollution on forest stands in the vicinity of Wodzisław Śląski and Rybnik, Poland
(Wydawnictwa AGH, 2019) Barniak, Joanna; Jureczko, Agnieszka
Tree-ring analysis was used to investigate the impact of air pollution on forest stands in southern part of the Upper Silesia region of southern Poland. Four about 120 years old Scots pine stands located near Wodzisław Śląski and Rybnik were selected for study and 20 increment core samples from each stand were taken. All study stands were selected based upon their considerable exposure to air and dust pollution. The results of dendrochronological analysis showed strong and significant reductions in tree ring growth especially during the period from 1960 to 1990. A significant number of trees with reductions (85%) was observed in two Scots pine stands both of which are directly exposed to air pollution from mine-owned coking plant and power and heating plants. Since 1990s the improved growth of these pines was clearly noted. A comparison for the period 1970 to 1990 for stands located west from the main emitters’ versus stands east and directly exposed found fewer trees with growth reductions (ca. 40%). At the beginning of the 21$^{st}$ century, a large number of trees in these western stands were observed with growth reductions between 50 and 60%. Probably, these trees were affected by air pollution from a nearby power plant located immediately across the border in the Czech Republic. Relationships between periods of severe reductions in ring width growth or missing rings were noted in a large percentage of pine trees in all four stands, these cross-stand relationships suggested common weather related impacts. Missing rings were noted in 1956, 1963, 1968, 1970, 1971, 1973, 1976 and 1979.
Access status: Restricted ,
Rekonstrukcja zmian stanu środowiska przyrodniczego w Kotlinie Sandomierskiej na podstawie analizy dendrochronologicznej
(Data obrony: 2010) Barniak, Joanna
Wydział Geologii, Geofizyki i Ochrony Środowiska
Industrial activities in northern part of the Sandomierz Basin affected the natural environment. Tree-ring analysis has been used to examine the main forest component – Scots pine (Pinus sylvestris L.), which allowed to evaluate the influence of industrial pollution in the time and spatial scale. The investigation based on nine linear transects established partly along the dominant winds. There were taken 814 samples from 70–120-year-old pines, in which width of 73821 tree-rings were measured. Response of trees for the anthropogenic stress was clearly visible in the years 1970 – 1990, when the Tarnobrzeg Sulphur Works reached the maximum of production. In that time an increased number of pines with reductions was observed. In the 1980s the level of trees with reduction reached up to 90% of the investigated pines and a sudden decrease marked the beginning of the next decade. The number of pines with reduction depending on the distance form main sources of pollution – Tarnobrzeg Sulphur Works and Połaniec Power Station – was noted. The research shows that reductions of pines ring width could be also a result of climatic conditions, hoppers of Jeziórko Mine and collective water intakes, as well as position of the sites in the forest complex.
Access status: Restricted ,
Zmiany środowiska na podstawie analizy dendrochronologicznej Pinus sylwestris L. w Nadleśnictwie Bełchatów
(Data obrony: 2017-01-27) Ziajkiewicz, Magdalena
Wydział Geologii, Geofizyki i Ochrony Środowiska
W celu określenia wpływu obniżenia zwierciadła wód gruntowych na kondycję sosny zwyczajnej, rosnącej w Nadleśnictwie Bełchatów, posłużono się analizą przyrostów rocznych. Pobrano 60 odwiertów z dwóch stanowisk. Jedno z nich położone było poza granicami leja depresji Kopalni Węgla Brunatnego Bełchatów, drugie w obrębie jego granic. W wyniku odwodnienia wyrobiska doszło do wystąpienia redukcji w większości badanych drzew, szczególnie widoczne jest to w latach 1989-1991.