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Wyszukujesz frazę "bonitacja" wg kryterium: Temat


Wyświetlanie 1-12 z 12
Tytuł:
Ksztaltowanie sie bonitacji dla drzewostanow sosnowych Polski
Autorzy:
Bruchwald, A
Kliczkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/53236.pdf
Data publikacji:
1997
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
siedliska lesne
drzewostany sosnowe
bonitacja siedliska
lesnictwo
urzadzanie lasu
Źródło:
Prace Instytutu Badawczego Leśnictwa. Seria A; 1997, 836-842; 63-73
0369-9870
Pojawia się w:
Prace Instytutu Badawczego Leśnictwa. Seria A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Matematyczne ujecie bonitacji siedliska
Autorzy:
Socha, J.
Powiązania:
https://bibliotekanauki.pl/articles/810910.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
korelacja
drzewostany sosnowe
siedliska lesne
klasy bonitacji
bonitacja siedliska
wysokosc
drzewostany swierkowe
lesnictwo
zdolnosc produkcyjna
drzewostany jodlowe
Źródło:
Sylwan; 1997, 141, 02; 31-36
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ uziarnienia gleby na bonitację drzewostanów sosnowych w południowo-zachodniej Polsce
The influence of soil texture on the site index of Scots pine stands in south-west Poland
Autorzy:
Sewerniak, P.
Powiązania:
https://bibliotekanauki.pl/articles/45653.pdf
Data publikacji:
2011
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
drzewostany sosnowe
bonitacja drzewostanow
gleby lesne
uziarnienie gleby
drzewa lesne
sosna zwyczajna
Pinus sylvestris
wzrost roslin
Polska Poludniowo-Zachodnia
Źródło:
Leśne Prace Badawcze; 2011, 72, 4
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamiczne krzywe bonitacyjne dla drzewostanów sosnowych Puszczy Niepołomickiej
Dynamic site index curves for Scots pine stands in Niepolomice Primeval Forest
Autorzy:
Socha, J.
Orzeł, S.
Powiązania:
https://bibliotekanauki.pl/articles/973666.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
krzywe bonitacyjne
leśnictwo
Puszcza Niepołomicka
bonitacja drzewostanów
site index model
base−age invariant
height growth
Pinus sylvestris L.
Opis:
The aim of the research was to evaluate, under the conditions of the Niepołomice Primeval Forest, the usefulness of site index models applied in forest practice in Poland and to develop a local system of site index curves for Scots pine. The research materials included measurement results for the trees growing on 74 circular, 0.05 ha sample plots. On the basis of the completed analyses, the age−related change in stand heights in the Niepołomice Primeval Forest is different than the height growth described by means of the site index models used in forest practice in Poland. As a result of several−stage analyses, a dynamic system of site index curves was developed for the Niepołomice Primeval Forest allowing calculation of the site index, as well as forecast of the height of stands at any age.
Źródło:
Sylwan; 2011, 155, 05; 301-312
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
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:
Dynamiczne krzywe bonitacyjne dla sosny zwyczajnej (Pinus sylvestris L.) z południowej Polski
Dynamic site index curves for Scots pine (Pinus sylvestris L.) in southern Poland
Autorzy:
Socha, J.
Orzeł, S.
Powiązania:
https://bibliotekanauki.pl/articles/993955.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany sosnowe
bonitacja drzewostanow
sosna zwyczajna
Pinus sylvestris
krzywe bonitacyjne
Polska Poludniowa
site index model
base−age invariant dynamic equation
height growth
site productivity
Opis:
The aim of the study was to develop a site index model for Scots pine stands in southern Poland describing changes in height growth of stand's upper storey over time. The research material contained the height growth data obtained from an analysis of 189 tree stems. The collected material was used to develop the parameters of six dynamic growth equations which allowed to determine site productivity and predict changes in height growth of stands with age. Statistical criteria for assessing the accuracy of mapping empirical data and biological reasonableness were the basis of selection of the equation that best fits changes in height growth of the examined pine stands with age. The developed model can be used to predict the growth rate and determine the site index for Scots pine stands in southern Poland.
Źródło:
Sylwan; 2013, 157, 01; 26-38
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bonitacja drzewostanów sosnowych w południowo-zachodniej Polsce w odniesieniu do typów siedliskowych lasu i taksonów gleb
Site index of Scots pine stands in south-western Poland in relation to forest site types and soil units
Autorzy:
Sewerniak, P.
Powiązania:
https://bibliotekanauki.pl/articles/991498.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany sosnowe
siedliska lesne
bonitacja drzewostanow
typy siedliskowe lasu
gleby lesne
warunki wilgotnosciowe
trofizm gleb
Polska Poludniowo-Zachodnia
site index
pinus sylvestris
tree growth
forest site
soil
Opis:
Forming of site index class of Scots pine (Pinus sylvestris L.) stands in relation to forest site types (including their moisture variants) and soil units (type/subtype and also – in minor extent – geological genesis of soil parent material) was investigated. The research was conducted in the Bolesławiec, Głogów and Oława forest districts (SW Poland) in 348 Scots pine stands. The values of the pine site index got higher with increasing fertility of soil units and better forest site type, but only when plots of sandy soils where concerned. Site index was found to differ significantly between fresh than moisture forest sites and soil units. The study results demonstrated that on fresh soils of sandy texture site index of Scots pine was distinctly related even to minor differences of site properties that concerned both its moisture and fertility. Scots pine, by height growth, does not fully utilize the great nutrient retention of fine textured soils that concerned both fresh and moisture pedons. Fine textured soils should be designed for eutrophic broadleaved tree species planting only, which would enable to fully utilize the trophic potential of such soils. The relation between the site index and geological genesis of sand forming parent material of soils was found. The differences in pine growth on sands of other genesis were assumed to be a result of different sorting and mineral composition of these materials.
Źródło:
Sylwan; 2013, 157, 07; 516-525
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ rzeźby terenu na bonitację i cechy wzrostowe drzewostanów sosnowych na wydmach Kotliny Toruńskiej
Impact of land relief on site index and growth parameters of Scots pine stands on inland dunes in the Torun Basin
Autorzy:
Sewerniak, P.
Powiązania:
https://bibliotekanauki.pl/articles/989617.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Kotlina Torunska
rzezba terenu
ekspozycja terenu
drzewostany sosnowe
sosna zwyczajna
Pinus sylvestris
wzrost roslin
wysokosc drzew
piersnice drzew
smuklosc drzew
bonitacja drzewostanow
topography
pinus sylvestris
slope aspect
tree growth
forest site
soil
inland dunes
Opis:
The aim of the study was to determine the impact of land relief on site index and growth parameters (height, diameter, slenderness) of Scots pine (Pinus sylvestris) stands on inland dunes in the Toruń Basin (N Poland). The study was conducted on 150 plots situated on north− and south−facing dune slopes (54 pairs of twin plots) as well as in intra−dune depressions (42 plots). Height and diameter of ten the thickest pines per 0.1 hectare was measured, and next site index as a potential height of a stand at the age of 100 years was calculated. As the results of the used equation, site index was strongly (R²=0.58) negatively biased to age, so the bias was removed using an elaborated regression model. For stands older than ca. 20 years, the clear higher site index values as well as higher heights and diameters were found for intra−dune depressions than for slopes of the two studied aspects. This was explained by the occurrence of much more fertile and moister soils in depressions. The only age class for which the advantage of site index and growth parameters was not stated for depressions was the youngest class (≤20 years old). This was likely caused by the competitive impact on young pines of Calamagrostis epigejos which prefers intra−dune depressions on inland dunes and forms in forest floor usually dense cover in this position. Impact of contrasting slope aspect was clearly related in the study to age of a stand. For the youngest studied age class both site index values as well as heights and diameters were lower on north− than on south−facing slopes. This was explained by the effect of weeds which form more dense cover on slopes of this aspect than on sunny slopes. For older stands; however higher site index values as well as heights and diameters were revealed for north−facing slopes, due to pines likely took advantage of higher moisture of soils occurring in this place. With reference to slenderness, regardless stand age the parameter was regularly the highest for north− than both for south−facing slopes and depressions. Because of the revealed distinct higher productivity of intra−dune depressions in normally dry and poor in nutrients dune landscape, it could be reasonable to use the depressions to introduce admixtures of broadleaved tree species into pine monocultures on inland dunes.
Źródło:
Sylwan; 2016, 160, 08; 647-655
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring cetyńców (Tomicus sp.) w różnych typach siedliskowych lasu
Monitoring of pine−shoot beetles (Tomicus sp.) in different forest habitat types
Autorzy:
Lesniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/973063.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Tomicus piniperda
bonitacja siedliska
cetyniec mniejszy
lesnictwo
drzewostany sosnowe
klasy wieku
owady
Tomicus minor
monitoring
typy siedliskowe lasu
szkodniki roślin
entomologia leśna
cytniec większy
pine−shoot beetle (tomicus sp.)
forest habitat type
age class
bonitet class
Opis:
The paper synthesises results from the study on pine−shoot beetles occurring in 10 types of forest habitat in seven forest districts of central Poland. The paper provides assessment of three methods for collecting insect−induced needle drop, as well as its quantities in age and bonitet classes in pure and mixed pine stands.
Źródło:
Sylwan; 2003, 147, 11; 61-67
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ właściwości gleb piaszczystych na bonitację drzewostanów sosnowych w południowo-zachodniej Polsce. II. Wybrane właściwości chemiczne
Impact of soil properties on site index class of Scots pine (Pinus sylvestris L.) stands in south-western Poland. II. Some chemical properties
Autorzy:
Sewerniak, P.
Powiązania:
https://bibliotekanauki.pl/articles/972761.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany sosnowe
bonitacja
gleby lesne
gleby piaszczyste
wlasciwosci chemiczne
zawartosc wegla organicznego
zawartosc azotu
stosunek wegla do azotu
kationy wymienne
kompleks sorpcyjny
kationy zasadowe
wysycenie kationami
soil
pinus sylvestris
site index
tree growth
nutrients
chemical soil properties
Opis:
Impact of some chemical soil properties (OC and Nt content as well as C:N ratio in humus horizon; exchangeable cation stocks and base saturation) on site index class of Scots pine (Pinus sylvestris L.) was analyzed. The study was conducted in 67 plots, separately on sandy soils of different moisture – non−gleyic (51 plots) and gleyic soils (16). For every soil pit, stocks of particular cations were calculated to the five depths: 25, 50, 100, 150 and 200 cm. The distinct positive impact of N, K and Mg on the pine site index was stated. The strong influence of K was assumed to be caused by the strong effect of potassium on water economy of trees. The positive relation between Ca soil stocks and pine growth was also stated, however, the relation was described to be an indirect one. Probably it reflected the stated clear intercorrelation of Ca with K and Mg content. The only element that was determined as negative correlated to the site index was Na, that was especially distinct when topsoil Na stocks were concerned. The negative correlation was presumed to reflect sodium adverse effect on soil structure, that resulted in decreasing water sorption in topsoil and thus caused less favourable site moisture conditions for pine growth. The results showed that when refer to the soil depth, the strength of the correlation between stocks of particular cations and the pine site index was strictly dependent on soil moisture: on non−gleyic soils, on the contrary to gleyic, the correlation strength was directly proportional to soil thickness taking into consideration in statistical analysis.
Źródło:
Sylwan; 2012, 156, 07; 518-525
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ujęcie wpływu właściwości gleb piaszczystych na bonitację drzewostanów sosnowych w południowo-zachodniej Polsce w modelach regresji
Regression models for impact of soil properties on site index class of Scots pine (Pinus sylvestris L.) stands in south-western Poland
Autorzy:
Sewerniak, P.
Piernik, A.
Powiązania:
https://bibliotekanauki.pl/articles/1008712.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gleby lesne
gleby piaszczyste
uziarnienie gleby
wlasciwosci chemiczne
odczyn gleby
zawartosc azotu
zawartosc potasu
zawartosc weglanu wapnia
poziom prochniczny gleby
miazszosc
oglejenie gleby
drzewostany sosnowe
bonitacja drzewostanow
modele regresyjne
drzewa lesne
sosna zwyczajna
Pinus sylvestris
wzrost roslin
Polska Poludniowo-Zachodnia
soil
pinus sylvestris
site index
tree growth
regression models
Opis:
The research was conducted in 268 pine stands on soils of sandy texture. In the paper 6 regression models for site index of Scots pine (Pinus sylvestris L.) were presented. The soil properties enclosed in the models explained to 40−60% of the site index variability. In the regression analyses, the following soil properties were found to be the best variables that described the site index: pHKCl, contents of fine textural fractions, content of K and N, CaCO3 content, soil moisture conditions reflected in gleying occurrence in a soil profile and a thickness of a solum or of a humus horizon (depending on the site moisture). The CaCO3 content was found to be a useful variable for the site index models only unless other chemical soil parameters were available. In such cases occurrence of CaCO3 in models reflects an impact of K and Mg soil content on pine growth that results from strong intercorrelations between Ca, K and Mg contents in the investigated soils. The site index was higher when pine stands were overgrowing gleyic than non−gleyic soils. In the presented regression models the difference was estimated to be about 1.5 m.
Źródło:
Sylwan; 2012, 156, 08; 563-571
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-12 z 12

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