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Forestry Compendium

Comprehensive, encyclopedic resource for information on forestry

Changes to Compendia distribution data: the distribution tables, maps and references in datasheets have been restructured to handle the data better for updating and align with a geographic standard. Further details are available on the About page.

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AbstractFull Text

The applied in the railways wooden sleepers (mostly from Pinus sylvestris L. and Fagus sylvatica L.) have structural damages in the area of the metal bolt. To repair the old and to produce new strengthened sleepers a construction is proposed, that includes False acacia wood in the sleeper's part...

Author(s)
Batov, I.; Kitin, P.; Kyuchoukov, B.
Publisher
Forest Research Institute, Sofia, Bulgaria
Citation
Proceedings of a jubilee symposium marking 100 years from the birthday of the Academician Boris Stephanov (1894-1979), Sofia, Bulgaria, 2-3 June 1994, 1995, pp 144-149
AbstractFull Text

This species was found for the first time in 1982, on Larix decidua in the village of Bogoslov near the town of Kyustendil, Bulgaria. Data resulting from observations of the pest in a local centre in Sofia, have been given in this work. The parasitoid of its pupae, Myxexoristops blondeli...

Author(s)
Pencheva, A.
Publisher
Forest Research Institute, Sofia, Bulgaria
Citation
Proceedings of a jubilee symposium marking 125 years of the Bulgarian Academy of Sciences and 65 years of the Forest Research Institute, Sofia, Bulgaria, 22-23 September 1994, 1995, pp 149-152
AbstractFull Text

Twenty-three young plantations of Douglas fir damaged by snow, were investigated. They were situated on the northern slopes of the Balkan Range. The damages were determined by means of regression analysis (of a step-wise regression), and models were developed for two forest-vegetation belts, while...

Author(s)
Iliev, S.; Petkova, K.
Publisher
Forest Research Institute, Sofia, Bulgaria
Citation
Proceedings of a jubilee symposium marking 125 years of the Bulgarian Academy of Sciences and 65 years of the Forest Research Institute, Sofia, Bulgaria, 22-23 September 1994, 1995, pp 88-92
AbstractFull Text

The intermediate cutting influence onto the Pinus nigra L. plantations and on the waste rate of the same ones has been studied, as well as some regularity norms regarding water content and the main nutritive elements one in the pine needles have been examined. The above mentioned studies have been...

Author(s)
Kostadin, K.; Broshtilova, M.
Publisher
Forest Research Institute, Sofia, Bulgaria
Citation
Proceedings of a jubilee symposium marking 125 years of the Bulgarian Academy of Sciences and 65 years of the Forest Research Institute, Sofia, Bulgaria, 22-23 September 1994, 1995, pp 50-56
AbstractFull Text

By means of particle-size analysis and mineralogical tests the changes in the fractional and mineralogical composition of the marles containing geological substrata after a forestry-biological reclamation of waste dumps from open-cast coal-mining were studied. Three experimental sites were created...

Author(s)
Gencheva, S.
Publisher
Forest Research Institute, Sofia, Bulgaria
Citation
Proceedings of a jubilee symposium marking 125 years of the Bulgarian Academy of Sciences and 65 years of the Forest Research Institute, Sofia, Bulgaria, 22-23 September 1994, 1995, pp 259-262
AbstractFull Text

In the article the results concerning the load of cutting chain during the process of package cutting of round wood materials are presented. The difference in the cutting chain tension before and after cutting results in this load. The conditions of the experiment of studying the process are...

Author(s)
Grigorov, D.
Publisher
Forest Research Institute, Sofia, Bulgaria
Citation
Proceedings of a jubilee symposium marking 125 years of the Bulgarian Academy of Sciences and 65 years of the Forest Research Institute, Sofia, Bulgaria, 22-23 September 1994, 1995, pp 326-329
AbstractFull Text

In the aspect of economy and ecology it is advisable to repair the old railway sleepers by replacing the damaged wood with heartwood of Robinia pseudoacacia L. The anatomical studies and the physical-mechanical experiments show that the black locust heartwood does not need any impregnation and it...

Author(s)
Batov, I.; Kitin, P.
Publisher
Forest Research Institute, Sofia, Bulgaria
Citation
Proceedings of a jubilee symposium marking 125 years of the Bulgarian Academy of Sciences and 65 years of the Forest Research Institute, Sofia, Bulgaria, 22-23 September 1994, 1995, pp 317-321
AbstractFull Text

Investigation have been carried out in mature oak stands in Vidin and Bourgas State Forestries. The results show that when gypsy moth's density is up to 25-30 egg-pods per 100 trees, the little insectivorous birds are, when at increased densities, a main factor of regulating the pest's frequence....

Author(s)
Penev, D.; Ovcharov, D.
Publisher
Forest Research Institute, Sofia, Bulgaria
Citation
Proceedings of a jubilee symposium marking 125 years of the Bulgarian Academy of Sciences and 65 years of the Forest Research Institute, Sofia, Bulgaria, 22-23 September 1994, 1995, pp 153-159
AbstractFull Text

In order to establish the antropogenous influence on the forest phytocenosis of the ore-dressing region "Assarel" (Sredna Gora) S combinations of the plant associations, characteristic for the region are chosen: * Fagus silvatica-Pteridium aquilinum; * Quercus daleschampii-Festuca dalmatica; * ...

Author(s)
Tashev, A.; Geleva, E.
Publisher
Forest Research Institute, Sofia, Bulgaria
Citation
Proceedings of a jubilee symposium marking 125 years of the Bulgarian Academy of Sciences and 65 years of the Forest Research Institute, Sofia, Bulgaria, 22-23 September 1994, 1995, pp 263-269
AbstractFull Text

The studies have been carried out at the ages of 5, 10 and 19, of common beech geographical plantations established from provenances of Petrohan Training-and-Trial Estate of Forestry and Hunting, Etropole State Forestry, and Boatin Reserve, at spacing of 1.5×1.5 m. The full dispersion analysis...

Author(s)
Botev, N.
Publisher
Forest Research Institute, Sofia, Bulgaria
Citation
Proceedings of a jubilee symposium marking 125 years of the Bulgarian Academy of Sciences and 65 years of the Forest Research Institute, Sofia, Bulgaria, 22-23 September 1994, 1995, pp 99-102

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