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Dynamika naturalnego wydzielania sie drzew w drzewostanach sosnowych

100%

Beker C.

Sylwan

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2005

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tom 149

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nr 12

45-52

2

Procesy rozwoju lasu roznowiekowego

86%

Banas J., Zieba S.

Roczniki Akademii Rolniczej w Poznaniu. Leśnictwo

|

2001

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tom 39

11-15

3

Zagęszczenie i dynamika procesu wydzielania drzew w młodocianych drzewostanach brzozowych na gruntach porolnych

86%

Socha J., Zasada M.

Sylwan

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2014

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tom 158

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nr 05

The study describes allometric relationships between stand density and tree dimensions in birch stands on post−agricultural lands. The research material consisted of measurements carried out on 120 sample plots located in birch stands on post−agricultural lands of Central Poland. The investigated relationship was analyzed using ordinary least squares (OLS), dynamical formulation of allometric function (DFA), sto− chastic frontier production function (SFF) as well as quantile regression (QR) methods. Similar effects of modeling maximum density were obtained as a result of applying FFP and QR methods with 0.9 quan− tile. SFF was found to be the most adequate method for modeling maximum density.

4

Tempo naturalnego wydzielania drzew w drzewostanach sosnowych wzrastajacych w roznych strefach przemyslowego zagrozenia

72%

Orzel S., Socha J.

Sylwan

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2000

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tom 144

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nr 09

77-87

5

Przewidywane oddziaływanie zmian klimatu na ekosystemy leśne oraz ich konsekwencje w urządzaniu lasu

72%

Borecki T., Orzechowski M., Stepien E., Wojcik R.

Sylwan

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2017

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tom 161

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nr 07

The paper presents the assessment of possible impact of climate change on forest ecosystems in Poland and its consequences in the forest management planning. Scenarios of climate change in the twenty first century do not allow unambiguous determination of the rate and direction of these changes. However, it is believed that climate change could have negative economic consequences, which directly or indirectly will affect the deterioration of the environment. Analysis of the possible forms of the impact of climate change on forest ecosystems is particularly relevant in terms of growth conditions. The most noticeable consequences of the changes will concern the threat to the stability of forest stands resulting from the increase in the intensity of trees dieback caused by different factors. The phenomenon results, among others, from: the occurrence of new threats from biotic factors, including caused by secondary pests and the occurrence of alien species of flora and fauna, the severity of the impact of abiotic factors and the deterioration of health (especially of conifers). The increase in the intensity of the evolution of trees is directly related to the size of the cuts contingent and will lead to a blurring of the boundary between thinning and health−cutting. It is expected that the planned size of the cuts will be implemented mainly in the thinning and accidental cuts. This requires the modification of the perception of the relationship of each category cuts. We propose the order and urgency in the planning of forest use. May be supposed that the role of the clearcutting system will be limited, with the exception of some forest complexes of predominantly productive functions, dominated by poor coniferous habitats. It is recommended to use the natural regeneration in the forest management. Lack of clear boundary between thinning and final cutting will require flexibility in the accounting for the total size of cuts. The consequences of climate change will probably occur in the long term perspective. It can therefore be assumed that reasonably forest management can help to reduce their negative effects. This requires pre−emptive decisions in forest management planning and verification for silviculture, production and protection targets, and their consistent implementation.

6

Czy naturalne procesy ekologiczne w juwenilnej fazie rozwoju drzewostanu założonego sztucznie różnicują jego strukturę przestrzenną?

58%

Szmyt J., Korzeniewicz R.

Leśne Prace Badawcze

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2014

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tom 75

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nr 2

7

Wpływ jakości siedliska na dynamikę wydzielania brzozy na gruntach porolnych

58%

Bijak S., Bronisz K., Szydlowska P., Wojtan R.

Sylwan

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2014

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tom 158

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nr 06

Paper discusses the influence of site quality on self−thinning process in silver birch stands growing on abandoned farmlands in Mazowieckie region (central Poland). Number of trees in a stand decreases with increasing age. The better the site (the higher site index value), the higher number of trees can be observed. However at the age of 10 difference between sites of various quality (site index) become insignificant. There is no need to include site index into the self−thinning models for young silver birch stands.

Ograniczanie wyników

5 Sylwan

1 Leśne Prace Badawcze

1 Roczniki Akademii Rolniczej w Poznaniu. Leśnictwo

2 Socha J.

1 Banas J.

1 Beker C.

1 Bijak S.

1 Borecki T.

1 Bronisz K.

1 Korzeniewicz R.

1 Orzechowski M.

1 Orzel S.

1 Stepien E.

1 Szmyt J.

1 Szydlowska P.

1 Wojcik R.

1 Wojtan R.

1 Zasada M.

1 Zieba S.

1 2017

3 2014

1 2005

1 2001

1 2000

Dynamika naturalnego wydzielania sie drzew w drzewostanach sosnowych

Procesy rozwoju lasu roznowiekowego

Zagęszczenie i dynamika procesu wydzielania drzew w młodocianych drzewostanach brzozowych na gruntach porolnych

Tempo naturalnego wydzielania drzew w drzewostanach sosnowych wzrastajacych w roznych strefach przemyslowego zagrozenia

Przewidywane oddziaływanie zmian klimatu na ekosystemy leśne oraz ich konsekwencje w urządzaniu lasu

Czy naturalne procesy ekologiczne w juwenilnej fazie rozwoju drzewostanu założonego sztucznie różnicują jego strukturę przestrzenną?

Wpływ jakości siedliska na dynamikę wydzielania brzozy na gruntach porolnych