Wyniki wyszukiwania

1

Evaluation of the accuracy of the growth model for Scots pine

100%

Bruchwald A., Bosiak P.

Annals of Warsaw Agricultural University. Forestry and Wood Technology

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1992

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tom 43

2

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Quality of Japanese larch stands in Poland

86%

Filipiak M., Pilarek Z.

Dendrobiology

|

2003

|

tom 49

The quality of 39 Japanese larch stands, mainly in north-western Poland, was characterized. On the basis of the presented results it can be concluded that properly managed forest stands of Japanese larch can compete in trees quality with stands of native larches. The alien species is more susceptible to a lower stand density and exposure to strong winds. This is no correlation between forest stand quality and growth dynamics.

3

The hydrological properties of waterlogged and drained forests in Latvia

72%

Zalitis P., Indriksons A.

Journal of Water and Land Development

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2009

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nr 13b

4

Influence of admixture species on growth features of scots pine [Pinus sylvestris L.] in a 10-year old cultivations

72%

Kocjan H.

Forestry

|

1998

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tom 01

5

Changes in species richness and community productivity during succession on the Loess Plateau (China)

58%

Wang K., Shao R., Shangguan Z.

Polish Journal of Ecology

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2010

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tom 58

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nr 3

We investigated changes in species richness, community biomass, and productivity during secondary forest succession in Ziwuling area of the Loess Plateau of China. Species richness(number of taxa) increased as the succession proceeds, and peaked at the climax forest community, but the richness growth gradually slowed down as the succession advanced. Community biomass rapidly increased from the herbaceous stage to the shrub stage and declined slightly in the climax forest stage. The maximum community biomass occurred in the pioneer forest stage. Community productivity followed an unimodal curve in the succession, and the maximum productivity occurred in the shrub community at the middle succession stage, and the communities maintained a low and stable productivity at the later succession stages. The herb and shrub species together determined community diversity during succession, while the tree species contributed less to diversity in the communities. The herb and shrub layers had a relatively low biomass, but contributed almost half of the productivity of the forest communities. The relationships between species richness, community biomass and productivity were unimodal during succession, but only the relationship between species richness and community biomass was significant.

6

The structure of the land covering of Zutica Forest, Croatia

58%

Vrbek B., Pilas I.

Acta Agrophysica

|

2001

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tom 50

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.

7

Problemy surowcowe przemyslu celulozowo-papierniczego

44%

Tarnawski W. Z.

Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie

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2005

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tom 45

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nr 3-4

199-204

8

Budowa i struktura tatrzanskich gornoreglowych borow swierkowych o charakterze pierwotnym w dolinach Rybiego Potoku, Panszczycy i Gasienicowej

44%

Karczmarski J.

Acta Agraria et Silvestria. Series Silvestris

|

1995

|

tom 33

167-198

Praca zawiera charakterystykę wybranych tech górnoreglowych drzewostanów świerkowych o charakterze pierwotnym, znajdujących się w rezerwacie ścisłym Tatrzańskiego Parku Narodowego. Badania przeprowadzono na 5 klasycznych, stałych powierzchniach doświadczalnych, w latach 1990-91 Na podstawie liсzby drzew, zasobności drzewostanów, krzywych rozkładów pierśnic i wysokości, budowy warstwowej, struktury wieku, żywotności, miąższości posuszu stojącego i leżącego oraz liczebności odnowienia scharakteryzowano budowę i strukturę oraz stadia i fаzу rozwojowe tych drzewostanów.

9

Budowa i struktura drzewostanow z udzialem buka i jawora w kompleksie lesnym Moczarne oraz pod Rabia Skala [Bieszczady]

37%

Jaworski A., Pach M., Skrzyszewski J.

Acta Agraria et Silvestria. Series Silvestris

|

1995

|

tom 33

39-73

Na czterech powierzchniach założonych w drzewostanach jaworowo-bukowych i bukowo jaworowych oceniono mi.in zasobność, strukturę rozkładu pierśnic i wysokości, miąższość posuszu, odnowienie oraz stadia i fazy rozwoju. Badania wykazały m.in. zróżnicowanie zasobności od 111do 545 m³/ha, oraz innych podanych wyżej elementów w zależności od położenia n.p.m. W warunkach optymalnych drzewostany te mogą odgrywać ważną rolę gospodarzą a w częściach przygrzbietowych, zwłaszcza w najbliższym sąsiedztwie górnej granicy lasu, zapewniają wypełnienie zadań ochronnych.

Ograniczanie wyników

Evaluation of the accuracy of the growth model for Scots pine

Quality of Japanese larch stands in Poland

The hydrological properties of waterlogged and drained forests in Latvia

Influence of admixture species on growth features of scots pine [Pinus sylvestris L.] in a 10-year old cultivations

Changes in species richness and community productivity during succession on the Loess Plateau (China)

The structure of the land covering of Zutica Forest, Croatia

Problemy surowcowe przemyslu celulozowo-papierniczego

Budowa i struktura tatrzanskich gornoreglowych borow swierkowych o charakterze pierwotnym w dolinach Rybiego Potoku, Panszczycy i Gasienicowej

Budowa i struktura drzewostanow z udzialem buka i jawora w kompleksie lesnym Moczarne oraz pod Rabia Skala [Bieszczady]