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Wyświetlanie 1-2 z 2
Tytuł:
Wpływ właściwości gleb piaszczystych na bonitację drzewostanów sosnowych w południowo-zachodniej Polsce. I. Odczyn, zawartość CaCO3 i cechy związane z głębokością gleby
Impact of soil properties on site index class of Scots pine (Pinus sylvestris L.) stands in south-western Poland. I. pH, content of CaCO3, and properties concerning soil depth
Autorzy:
Sewerniak, P.
Powiązania:
https://bibliotekanauki.pl/articles/1008810.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany sosnowe
bonitacja
gleby lesne
gleby piaszczyste
odczyn gleby
zawartosc weglanu wapnia
miazszosc gleb
soil
pinus sylvestris
ph
calcium carbonate
soil depth
Opis:
The research was conducted in 268 Scots pine (Pinus sylvestris L.) stands, separately on soils of different moisture – non−gleyic (215 plots) and gleyic (53). The site index (B) of every Scots pine stand was determine as mean height of the ten thickest trees per 0.1 hectare, recalculated for the base−age of 100 years. The results show clearly negative relationship between the pine site index and pH values, that is probably caused by positive impact of soil acidity on (i) mycorrhiza symbiosis and (ii) nutrients releasing from minerals in weathering processes. The optimum soil pH for Scots pine site index was defined as regarding ca. 4.5 pHH2O and 4.0 pHKCl. There was not stated any impact of CaCO3 content in soil parent material on pine growth. The soil depth was positively related to the site index only when non−gleyic soils were concerned. On gleyic soils any relation between soil depth and pine growth was found. The results showed that in different soil moisture conditions, properties of opposite soil zones play the key role for the pine growth. When pine was planted on non−gleyic soils, the site index was much more related to properties of deeper horizons and parent material than of topsoil, while on gleyic soils the site index was correlated to properties of surface soil layer mainly.
Źródło:
Sylwan; 2012, 156, 06; 427-436
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kondycja jesionu wyniosłego (Fraxinus excelsior L.) w zależności od warunków wilgotnościowych wybranych siedlisk leśnych
Health status of European ash (Fraxinus excelsior L.) in relation to the moisture of selected forest sites
Autorzy:
Turczański, K.
Rutkowski, P.
Nowiński, M.
Zawieja, B.
Powiązania:
https://bibliotekanauki.pl/articles/979248.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Fraxinus excelsior
kondycja drzew
warunki siedliska
typy siedliskowe lasu
warunki wilgotnosciowe
uwilgotnienie gleby
poziom wod gruntowych
leśnictwo
drzewa leśne
jesion wyniosły
ash dieback
forest site type
soil moisture
depth of the groundwater level
Opis:
The study aimed to determine the influence of site moisture conditions on the health status of European ash. The research plots were located in the Babki, Konstantynowo and Łopuchówko forest districts, as well as in the Poznań Municipal Forests (western Poland). The research was carried out on 30 research plots established in the part of the stands with at least 80% share of ash in the stand species composition. Ash aged from 48 to 144 years. The scope of the research included: (1) selection of the research plots and determination of the forest site type, (2) assessment of site moisture conditions – the type and degree of moisture and the depth of the groundwater level, (3) selection of 15 trees belonging to the 1st and 2nd Kraft’s class and assessment of their health status using the synthetic damage indicator, which is based on the crown defoliation and vitality of upper part of the crown. Results revealed that the best health status of ash stands was noted in mesic broadleaved forest. In contrast, within the stands in moist broadleaved forest, alder−ash forest and riparian forest we observed the highest share of damaged and dying trees. The more detailed analysis of moisture conditions showed that the lowest damage of ash was noted within the stands with the groundwater level at depth below 1.8 m and up to 0.5 m. Moreover, a high share of healthy and weakened trees occurred also within the stands with water flowing down the slope and in the compact soils, where water does not undergo significant level fluctuations. The most damaged stands occurred mostly in dehydrated soils, as well as in the soils where the depth of the groundwater was between 0.5 and 1.8 m.
Źródło:
Sylwan; 2020, 164, 02; 133-141
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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