Autor: Liberacki, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Kształtowanie się zasobów wodnych w małych zlewniach leśnych na obszarze Wielkopolski
Evaluation of water resources in a small forest catchment in Wielkopolska Region
Autorzy:: Stasik, R.
Szafrański, C.
Korytowski, M.
Liberacki, D.
Powiązania:: https://bibliotekanauki.pl/articles/1819447.pdf
Data publikacji:: 2011
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: Wielkopolska
zlewnia leśna
zasoby wodne
catchment forest
water resources
Wielkopolska Region
Opis:: Na podstawie pomiarów uzyskanych ze stacji meteorologicznej LZD Siemianice średnia z wielolecia 1975÷2006 roczna suma opadów atmosferycznych na badanym obszarze jest równa 560 mm (tabela 2). W półroczu zimowym w badanym wieloleciu średnia suma opadów wynosi 210 mm. Wartość średniej sumy opadów w półroczu letnim w danym wieloleciu jest równa 350 mm. Maksymalna zmierzona roczna suma opadów wyniosła 958 mm, natomiast najniższa jest równa 434 mm. W omawianym wieloleciu średnia roczna temperatura na analizowanym obszarze wynosi 9,0°C. Średnia z wielolecia temperatura powietrza w półroczu zimowym jest równa 2,4°C, natomiast w letnim 15,5°C. Najniższa temperatura w wieloleciu w półroczu zimowym wyniosła -0,4°C, a najwyższa 4,6°C, natomiast najwyższa temperatura w wieloleciu w półroczu letnim wyniosła 17,1°C a najniższa 13,6°C.
The research of water resource evaluation were carried out at three small forest catchment located at Wielkopolska region. G and G-8 catchments are located at Siemianice Forest Experimental Farm in southern part of Wielkopolska region. Hutka catchment is located at Zielonka Primeval Forest in central part of the region. The maximum water flow in analyzed G, G-8 ditches and Hutka water-course always appeared in winter half-years. Meanwhile water flow in analyzed watercourses were always significantly lower in summer half-years and periodically they disappeared. It was also indicated that increase of groundwater levels is strongly connected with water retention in winter half-years. Meanwhile decrease of groundwater levels and water content in soil caused by higher evaporation were observed in summer half-years which had significant role in water balances of these catchments. The research carried out in a different habitat conditions indicated the smallest changes of groundwater and total retention in swamp habitats: mainly in ash-alder swamp forest and moist broadleaved forest. Higher differentiation of water retention changes and groundwater levels was observed in moist mixed broadleaved forest, moist mixed coniferous forest, as well as in fresh mixed broadleaved forest and fresh mixed coniferous forest. It suggests the possibility of better usage of their retention capability. Optimum water level sustaining in forest habitat soils allows better usage of retain water was also indicated in the research, which is in accordance with forest needs and environmental protection requirements.
Źródło:: Rocznik Ochrona Środowiska; 2011, Tom 13; 1679-1696
1506-218X
Pojawia się w:: Rocznik Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Ocena wybranych składników bilansów wodnych małych zlewni leśnych o zróżnicowanych warunkach siedliskowych
Evaluation of selected water balance components in two small lowland catchments of different forest habitats
Autorzy:: Stasik, R.
Szafrański, Cz.
Liberacki, D.
Korytowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/1826106.pdf
Data publikacji:: 2008
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: bilans wodny
zasoby wody
zlewnie rzek
mała retencja
Opis:: The need of the best utilization of water resources of catchments in Wielkopolska, results from the fact that region this is numbered to the most water scarce areas of Poland [6]. In addition this deficit is gradually deepening, when the annual sum of precipitation does not excess 500 mm [2]. Improvement of water reserves in habitats is one of aims of so-called small retention presented in "Principles of planning and realization of small retention in Polish State Forests" [7]. It may be realized among others through regulated runoff in meliorated forest catchments and by that better utilization of the natural retention abilities of the soils of these catchments [1, 5]. In order to limit the size of runoffs and utilize retention water in small catchments for maximum productivity of forest areas, good acquaintance of the balance structure of these catchments in diverse habitat conditions is necessary. The aim of investigations presented in this paper is analysis of selected components of water balances is in small forest catchments with diverse habitat conditions, located in the area of Wielkopolska. Results of investigations and field observations from hydrological years 2001, 2002 and 2005 were used in investigations. Variation of the annual sums of precipitations was accepted as the main criterion for selection of hydrological years. Investigations were carried out in two catchments: watercourse Hutka and ditch G-8, distant from each other about 250 km. Catchment of ditch G-8 is located in the south part of Wielkopolska in forests belonging to Forest Experimental Institution Siemianice (LZD) of Poznan University of Life Sciences. Catchment of Hutka is located in central part of Puszcza Zielonka about 20 km south east from Poznan. Carried out investigations of two small lowland catchment indicate significant impact of meteorological conditions as well as forest habitats on runoff index, retention changes in analyzed hydrological years. Runoff indicators from G-8 catchment were several times higher than indicators from Hutka catchment in winter half-years. Runoff index in G-8 was significantly, even several times smaller, in summer half-years than runoffs in winter half-years. Runoff indicators were significantly leveled at Hutka. The water retention changes observed at Hutka catchment were significantly higher than retention changes at G-8 catchment. Investigations confirmed, that in summer half-years the predominant role in water balances discussed catchments has field evaporation. Lower runoff indices in summer half-years in comparison with winter half-years the winter and decrease of retention prove that fact
Źródło:: Rocznik Ochrona Środowiska; 2008, Tom 10; 557-565
1506-218X
Pojawia się w:: Rocznik Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Efekty realizacji programu małej retencji w lasach na przykładzie dwóch nadleśnictw obszarów nizinnych
Effects of Implementation of Small Retention Programme on the Example of Two Forest Districts of Lowland Area
Autorzy:: Liberacki, D.
Korytowski, M.
Kozaczyk, P.
Stachowski, P.
Stasik, R.
Powiązania:: https://bibliotekanauki.pl/articles/1818011.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: zlewnie leśne
zbiorniki wodne
mała retencja
forest catchment
water reservoir
small retention
Opis:: Evaluation of the effects of small retention programme implementation was an aim of the paper. The research was carried out in two forest districts located in lowland area: Włocławek and Dąbrowa Forest District. They are located in the central part of the Polish Lowland in the southern and north-eastern part of Kujawy-Pomerania Province. Location of these objects in the zone of the lowest precipitation and also in the high air temperature have negative impact on the water resources. All of the activities which can protect the water resources as well as can increase the water retention should be priority. Realization of the investment of small retention objects in recent years caused creation of artificial reservoirs collecting significant amount of water, which flowed away until now. Realization of small retention object at Osięciny Forestry of Włocławek Forest District included building weir with regulated flashboard gate in the ditch. Meanwhile in the Dąbrowa Forest District at Krępa watercourse at degraded grasslands of low class in November 2006. Four cascading weir with constant overflow as well as four reservoirs were built. An increase of surface and subsurface retention capacity in Włocławek Forest Districts was from 14 to 14.5 th. m3, with an increase of flowed area from 10.3 th. m2 to 31.7 th. m2. Flowed area created in second analysed forest district – Dąbrowa, was from 1.8 th. m2 to 32.9 th. m2, and built reservoirs stored water of amount from 2.6 th. 3 to 18.1 th. m2. The building devices of small retention caused the water retention increase of about 36.4 th. m3 in total. Improvement of habitat conditions which are in particular sensitive to water shortage, which can appear frequently, was an additional profit of small retention programme implementation, besides the increase of water storage amount. The researches indicated that nature-friendly small water damming devices, constructed from natural materials can also be an cheap alternative for water storage in comparison to constructing bigger water reservoirs, which also demanding high exploitation costs. Small retention water devices presented in the paper allow to carrying out a rational water management with maintain of environmental needs. They also indicate possibility of water retention increase and protection of forest habitats which are particularly sensitive to water shortage. The more so all of the small retention activities can positively affect biodiversity of forest habitats.
Źródło:: Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 428-438
1506-218X
Pojawia się w:: Rocznik Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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