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Wyszukujesz frazę "properties of soils" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Aktywność biochemiczna gleb w drzewostanach cisa pospolitego Taxus baccata L. w rezerwatach i lasach gospodarczych
Biochemical soil activity in Taxus baccata L. stands in forest reserves and managed forests
Autorzy:
Olszowska, G.
Powiązania:
https://bibliotekanauki.pl/articles/1313327.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
drzewa lesne
cis pospolity
Taxus baccata
drzewostany gospodarcze
rezerwaty przyrody
rezerwat Bogdanieckie Cisy
rezerwat Cisy Rokickie
rezerwat Cisy Tychowskie
rezerwat Cisy w Czarnem
gleby lesne
aktywnosc enzymatyczna
wlasciwosci chemiczne
enzymatic activity
chemical properties of soils
forest soils
forest reserves
Opis:
The aim of these studies was to estimate the enzymatic activity and chemical properties of soils of Taxus baccata L. stands in selected forest reserves as well as in managed forest stands that do not belong to reserves. Furthermore, I compared the soil fertility of both types of forest stand using a biochemical soil quality indicator. The studies were conducted in the following reserves: “Bogdanieckie Cisy”, “Cisy Rokickie”, “Cisy Tychowskie”, “Cisy w Czarnem”, as well as in managed forest stands with the same soil and habitat type as the above-mentioned reserves. Analyses showed a lower activity of urease, asparaginase, acid phosphatase and dehydrogenase in soils of the managed forests than in soils of the reserves. The soil nutrient availability given by the total organic carbon, nitrogen, and alkaline cation content as well as soil sorption capacity were significantly lower outside the forest reserves. Chemical and biochemical parameters were used to calculate a biochemical index of soil fertility. The index was higher for soil in forest reserves than for soil in managed forest stands located outside reserves. This result held true regardless of the biochemical parameters used in the calculation. As has been shown in previous studies on protected areas with no cultivation that are largely influenced by natural processes, biochemical indices can be very useful for comparative analyses aiming at estimating soil quality or the reaction of soil to external factors, both natural and anthropogenic.
Źródło:
Leśne Prace Badawcze; 2014, 75, 4; 407-415
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Klasyfikacja siedlisk leśnych - uwagi w sprawie miejsca gleb w zasadach diagnozowania
Forest site classification - remarks coencerning the role of soil in the rules of forest site diagnosis
Autorzy:
Brożek, S.
Powiązania:
https://bibliotekanauki.pl/articles/1015907.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
siedliska lesne
gleby lesne
klasyfikacja siedlisk
lesnictwo
siedliskoznawstwo lesne
forest site classification
significance of soils
soil properties
criteria of forest site classification
Opis:
The study deals with the criteria of forest site classification in forest planning taking special consideration of the significance of soils in forest site mapping. The analysis embraced two documents: Site−based principles of silviculture 2004 and Instruction of forest management. Part II. Instruction of differentiating and mapping forest sites 2003. It was pointed out that the soil criteria adopted in these two documents are inconsistent and incomplete and make it impossible for the appraiser to clearly distinguish forest sites on the basis of soil properties.
Źródło:
Sylwan; 2007, 151, 02; 19-25
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Akumulacja węgla organicznego w glebach różnych typów siedlisk leśnych
Organic carbon accumulation in soil of different forest site types
Autorzy:
Zwydak, M.
Błońska, E.
Lasota, J.
Powiązania:
https://bibliotekanauki.pl/articles/987114.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
siedliska lesne
warunki siedliskowe
gleby lesne
wegiel organiczny
akumulacja wegla
zapas wegla w glebie
soil organic matter
carbon stock in soils
forest soil properties
type of forest site
Opis:
The objective of the paper was to estimate i) the carbon accumulation in soils of different forest site types as well as ii) its changes with regard to the depth of the soil profile. The investigation was carried out in the Przedbórz Forest District (central Poland) on 43 study plots, including different forest sites – fresh coniferous forest (Bśw), fresh mixed coniferous forest (BMśw), fresh mixed broadleaved forest (LMśw) and fresh broadleaved forest (Lśw). On each plot soil pits were dug and samples for laboratory analysis were collected. The following characteristics were determined in the soil samples: pH, the content of organic C and total N, particle−size distribution, the content of exchangeable Ca, Mg, Na and K, and hydrolityc acidity. The obtained results demonstrated that soils of Bśw, BMśw and LMśw sites characterized by higher carbon accumulation in surface horizon to 50 cm depth compared to the most eutrophic sites (Lśw). The rate of carbon accumu− lation in forest soils depend on the humus type which is connected with species composition of stands. Domination of Scots pine in stand affects the formation of ectohumus and leads to higher C accumulation in surface horizons on Bśw, BMśw and LMśw sites. In soils of Bśw, BMśw and LMśw sites carbon stored in the horizons to 50 cm constitutes 64−94% of the total carbon accu− mulated, while on the eutrophic sites (Lśw) this share amounts to 39−72%. The value of the total carbon stock in soils of fresh forest sites can be estimated on the basis of carbon stock in horizons to 50 cm depth.
Źródło:
Sylwan; 2017, 161, 01; 62-70
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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