Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "bonitacja drzewostanów" wg kryterium: Temat


Wyświetlanie 1-4 z 4
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 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:
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:
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 1-4 z 4

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies