Results 21 to 30 of about 192,640 (168)
Dynamics of health status of forest stands on research plots in the Šumava National Park
Journal of Forest Science, 2003 The paper summarises an evaluation of the health status dynamics of allochthonous spruce stands in the Modrava Forest District and of natural stands in the Plešný Forest District.
S. Vacek +3 more
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Forest site conditions and other features of Scots pine stands favorable for bark beetles
Наукові праці Лісівничої академії наук України, 2018 The aim of research was to evaluate the dependence of bark beetles foci distribution on forest site conditions as well as on Scots pine stands origin and other characteristics.
Valentyna L. Meshkova +2 more
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Analysis of monoterpene variation in natural stands and plustrees of Pinus sylvestris in Finland.
Silva Fennica, 1986 Variation of monoterpene composition of L. was studied in Southern, Central and Northern Finland using data from both natural stands and plus trees. The natural stands were analysed using different techniques and for fewer terpenes than the plus trees ...
Muona, Outi +3 more
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Journal of Forest Science, 2006 The paper summarises the evaluation of the health status dynamics of allochthonous spruce stands in the Modrava Forest District and of natural stands in the Plešný Forest District.
S. Vacek, V. Podrázský, K. Matějka
doaj +1 more source
PLoS ONE, 2022 Strong anthropogenic pressures on global forests necessitate that managed forests be evaluated as habitat for biodiversity. The complex pattern of habitat types created in forestry systems is ideal for analyses through the theoretical framework of alpha (
Oskar Gran
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Silva Fennica, 2009 Darkening of birch wood during artificial drying is a significant problem regarding the use of its timber as raw material by the mechanical wood industry. In the future, an increasing proportion of birch timber will be obtained from plantation forests,
Luostarinen, Katri, Möttönen, Veikko
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Central European Forestry Journal, 2022 Extensive forest areas decreased and fragmented during anthropogenic development of the zone of broad-leaved forest tree species in Russia. The pedunculate oak (Quercus robur L.) and the European white elm (Ulmus laevis Pall.), important key components ...
Ianbaev Ruslan +4 more
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Structural diversity of selected oak stands (Quercus robur L.) on the Krotoszyn Plateau in Poland
Leśne Prace Badawcze, 2017 The oak forests growing on the Krotoszyn Plateau are the biggest and most valuable oak forest complexes in Poland. The purpose of this study was to analyze the structural diversity of oak (Q. robur L.) stands older than 140 years.
Szmyt Janusz
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Pathogenic Networks and Natural Thinning of Stands
Bulletin of Science and Practice, 2023 In pine cultures on an area of 0.66 hectares, 345 trees that had fallen away by the age of 59 and 1436 pathogenic zones were studied using biolocation. The cells of their networks have sides with distance fluctuations of 69-845 cm, and north-south and west-east in the Hartman network, the distances between the zones are 360±5 and 390±6 cm, and in the ...
openaire +1 more source
Standing in the way by standing in the middle: The case of state-owned natural gas intermediaries in Bulgaria [PDF]
Geoforum, 2014 Bulgaria is a significant natural gas transit state in the EU (a role set to increase with the South Stream and potential Nabucco West gas pipelines) and a Member State subject to EU regulation. As a result, the regulation of natural gas in the country is of direct relevance to the development, implementation and realisation of EU energy security ...
Maltby, Tomas, Hiteva, Ralitsa Petrova
openaire +2 more sources