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Wyszukujesz frazę "lowland area" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Contemporary directions of transformations in the settlement and the landscape of rural areas in the Silesian lowland
Autorzy:
Łach, Janusz
Szczepańska, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/1050802.pdf
Data publikacji:
2020-03-31
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Silesian Lowland
Borek Strzelińsk
rural area
rural landscape
social activity
local leaders
Opis:
Rural areas of the Silesian Lowland, undergoing social and economic transformations today, have had a strong impact on the formation of the region’s settlement landscapes. Political and economic changes after 1989 have affected the development of rural areas, in particular of ‘privileged’ settlements for which the proximity of towns and a trunk road are favourable factors. The result of these seemingly positive factors is the escape of young people (potential farmers) to the cities and an influx of new settlers. This affects social behaviour and activity, as well as the visual rural landscape, creating suburban zones with residential and leisure functions. The village seems to have lost its typical character but has it really? The subject of the research is, therefore, an analysis of changes in the spatial and social structure of a rural village as exemplified by Borek Strzeliński, which allows setting out its functions. The research issue is to determine the level of social activity of rural residents and their attitude towards the local cultural heritage, which influences their identity and the value of the landscape. The use of integrated methods of field work based on a free sociological survey has allowed identifying the spatial directions of village development and threats resulting from divided social activity.
Źródło:
Quaestiones Geographicae; 2020, 39, 2; 55-73
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution patterns of three Potamogeton species (P. crispus, P. nodosus and P. pectinatus) along velocity and base richness gradients from a lowland river
Autorzy:
Jakubas, E.
Gabka, M.
Powiązania:
https://bibliotekanauki.pl/articles/878331.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
distribution pattern
Potamogeton
Potamogeton crispus
Potamogeton nodosus
Potamogeton pectinatus
abundance
hydrophyte
gradient
lowland river
river
environment
Natura 2000 area
Opis:
This study presents distribution and abundance of three Potamogeton species, namely Potamogeton crispus, P. nodosus and P. pectinatus along environmental gradients in the lowland river Wełna (NW Poland). The relationships between 13 environmental factors and the pattern aquatic vegetation distribution along river were investigated. Among ecological factors rarely undertaken in aquatic ecology the light climate was concerned. It is postulated that the Potamogeton communities in the investigated river are strongly connected with water velocity, substrate of bottom and light conditions, in particular dissolved organic matter (DOM). Elodeo-Potametum crispi and algae communities with dominant species Hildenbrandia rivularis were well developed in the places shading by trees, with high velocity and fairly clean water, mostly with stony bottom. Potametum nodosi was noted in mean values of velocity and medium water quality with high content of organic matter in the bottom substrate. The last investigated community Sparganio-Potametum interrupti was found in poor water quality with the highest values of electric conductivity. The obtained results give a new approach of the ecology and abiotic typology of rivers with macrophytes including abundance of Potamogeton species (Nature 2000 habitat, code 3260 – “Water courses of plain to montane levels with the Ranunculion fl uitantis and Callitricho-Batrachion vegetation”).
Źródło:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana; 2013, 17
1896-1908
Pojawia się w:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sorption properties of gypsic rendzinas from the Niecka Nidzianska area
Autorzy:
Ciarkowska, K
Powiązania:
https://bibliotekanauki.pl/articles/1450782.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil profile
glacial cover
rendzina soil
Polish lowland
soil protection
arable soil
semispherical gypsic hill
soil
turf soil
gypsum deposit
sorption property
gypsic rendzina soil
Niecka Nidzianska area
gypsic rock
terrestrial ecosystem
Nida area
Opis:
In order to estimate sorption properties of gypsic rendzinas from the Niecka Nidziańska area as well as compare a composition of exchangeable cations in arable and turf soils 24 profiles have been investigated which represented following subtypes: initial, proper, chernozemic and brown ones, and derived from 3 types of miocene gypsum: selenite, shaly and compact gypsum. On the basis of the investigations it has been found that sorption properties of gypsic rendzinas were formed under influence of lithological factor and depend on the activity of the parent rock which is expressed by a content of the active calcium in the rock. Humous horizons of the arable soils characterised of a slightly lower complex exchange capacity and a higher contribution of potassium and magnesium in the composition of exchangeable ions in comparison with analogous horizons of the turf soils. A content of exchangeable cations permitted to count investigated soils among the soils with saturated complex of exchangeable cations. In their complex dominated calcium and the contribution of acid cations was small.
Źródło:
Acta Agrophysica; 2001, 50; 71-79
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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