Temat: land productivity - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The structure of the land covering of Zutica Forest, Croatia
Autorzy:: Vrbek, B
Pilas, I.
Powiązania:: https://bibliotekanauki.pl/articles/1450900.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: forest productivity
Croatia
nitrogen
structure
soil type
fertilizer
soil
land cover
soil productivity
Zutica Forest
cadmium
water regime
phosphorus
terrestrial ecosystem
heavy metal
Opis:: This paper presents pedological research in Žutica forest in northern Croatia. The most common soil types found in this area belong to the hydromorphic class (Pseudogley, pseudo- gley-gley, eugley, fluvisol) except technogenic soils formed as a result of intensive oil exploitation. Some main chemical and physical characteristics of soils are given. For forest productivity the most productive combination of soils are hypogley and pseudogley-gleysol and minimal productivity is in heavy amphygleic soils. An increase of heavy metals occurs in flooded soils in Žutica from nearby agricultural land. A high concentration of active phosphorus,and nitrogen can verify the influence of field fertilisers on the forest. Levels of cadmium found in technogenic soils exceed the permitted concentration. A large amount of CaCO3 in relation to natural forest soils can be found in technogenic soils because of quick lime disposal after oil spills and also pH increase and a nutrition and humus decrease.
Źródło:: Acta Agrophysica; 2001, 50; 245-251
1234-4125
Pojawia się w:: Acta Agrophysica
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Produkcyjność plantacji wybranych klonów topoli w południowo-wschodnim Kazachstanie
Productivity of the selected poplar cultivars in the plantation conditions in south-eastern Kazakhstan
Autorzy:: Sarsekova, D.N.
Zasada, M.
Powiązania:: https://bibliotekanauki.pl/articles/991006.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
drzewa szybkorosnace
topola
klony
wzrost roslin
piersnice drzew
wysokosc drzew
miazszosc drzew
uprawa plantacyjna
plantacje drzew lesnych
produkcyjnosc
Kazachstan
forest productivity
land reclamation
initial spacing
tree stocking
volume increment
Opis:: The topic of forest plantations is particularly important in countries with low forest cover, where the demand for wood is particularly high, such as e.g. Kazakhstan. The main goal of this paper is to present the results of research on the productivity of selected cultivars of poplar: 62027−1 hybrid and Kazakh poplar, grown in various spacings (2,5×1, 3×1,5 and 3×2 m, which translates to stocking of 4000, 2220 and 1667 trees per ha, respectively), and the possibility of their cultivation in the conditions of southeastern Kazakhstan. The conducted experiments confirmed the high production potential of the selected hybrid poplars. The average volume of the individual trees' trunks at the age of 23 years reached 0,4−0,5 m³, the total growing stock can be up to 800−1000 m³/ha and the mean annual increment from 29 to 44 m³/ha. More adapted to the local conditions proved to be hybrids belonging to a section of white poplars. Due to dying tree tops and signs of damage from insects emerging at age exceeding 22−23 years, observed especially in plantations consisting up of hybrids belonging to the black poplars section, plantation rotation should not exceed 20 years. Establishing the poplar plantations using selected varieties is also one of the promising ways for reclamation of the saline soils of south−eastern Kazakhstan. Along with the timber and the possible use of biomass, plantations can be also used as a source of feed and hay for livestock.
Źródło:: Sylwan; 2014, 158, 06; 453-462
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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