Báo cáo lâm nghiệp: "The survey of some factors affecting bark lesion development caused by Phytophthora cactorum on common beech and other broadleaved trees" pdf
Báo cáo lâm nghiệp: "The results of manipulated experiments with inoculation of Ips typographus (L., 1758) to spruce trees under various levels" potx
... inoculation of Ips typographus (L., 1758) to spruce trees under various levels of water stressM. T, O. NFaculty of Forestry and Wood Sciences, Czech University of Life Sciences ... RepublicABSTRACT: Manipulated experiments with males of Ips typographus (L., 1758) were conducted in spruce stands in north-western Slovakia. Some of trees were stressed by a lack of water caused ... behaviour of bark beetles on trees under various regime of water stress in declining spruce mono- cultures. Within the frame of which we focus on:– analysis of I. typographus attacks rate on trees...
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Báo cáo lâm nghiệp: "The influence of irradiation on the behaviour and reproduction success of eight toothed bark beetle Ips typographus (Coleoptera: Scolytidae)" doc
... of irradiation on the behaviour and reproduction success of eight toothed bark beetle Ips typographus (Coleoptera: Scolytidae)M. T1, J. V21Faculty of Forestry and Wood Sciences, ... SlovakiaABSTRACT: Irradiation experiments on Ips typographus (L., 1758) with doses of 15 and 30 Gy (cobalt 60) were con-ducted in 2006. e effect of irradiation on the mating behaviour and reproduction success ... however. We can conclude the doses of 15 and 30 Gy do not have a significantly negative effect on the behaviour of ir-radiated males in the preparation of entry holes and the creation of mating chambers....
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Báo cáo lâm nghiệp: "The use of silica sand in micropropagation of woods" pot
... was used in part as liquid with sand (25 cm3 sand + 20 ml solution), in part reinforced by heating 6g of agar in a 1 l medium. Cultures were incubated for 6 weeks with a daily lighting period ... substances. White silica sand marked PR 21 from the sandpit Provodín near Česká Lípa (http://www.pisky.cz) was used in laboratories of the North-Bohemian Museum in Liberec and later also of the Botanic ... hypothesis was tested for conformity of averages for pH 5.6 and pH 4.5.RESULTSComparing cultures in sand and in agarAfter the completion of cultivation, it was de-termined that when using...
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Báo cáo lâm nghiệp: "The effect of point application of fertilizers on the soil environment of spread line windrows in the Krušné hory Mts" docx
... were observed mainly in regions exposed to the heavy deposition e effect of point application of fertilizers on the soil environment of spread line windrows in the Krušné hory Mts.D. V1, ... scarification the top -soil horizons were moved into line windrows, which caused marked degradation of the soil environment. e present revitalization of the soil environment is based on the principle of ... matter.CONCLUSION In the course of large-scale scarification the top- soil horizons were moved into line windrows in the Krušné hory Mts., which caused marked degradation of the soil environment. e...
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Báo cáo lâm nghiệp: "The proposal of biotic hazard zones in selected spruce dominated regions in Slovakia" pptx
... of biotic hazard zones in three spruce dominated regions in Slo-vakia;(3) Proposal of zone-specific forest protection mea-sures.Study regions ree regions with different kind of spruce decline ... Descriptive statistics of data on accidental felling of spruce (m3 of felled volume) used for the proposal of biotic hazard zones in three investigated regions Region Agent Year N Mean Min. Max. Med ... reporting system. Subsequently, we demonstrated its use in three spruce dominated regions in Slovakia, covering ap-proximately 70% of spruce forests of this country. Almost all declining spruce...
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Báo cáo lâm nghiệp: "The influence of selected factors on energy requirements for plain milling of beech wood" ppsx
... information on the given problems. Energy requirements were assessed on the basis of measurement and evaluation of electric input e influence of selected factors on energy requirements for plain ... of selected factors of energy require-ments at plain milling of beech wood on cutting input as well as on basic technological parameters vc and vf, and on the tool angular geometry of ... the question of energy intensity (G 2008) of produc-tion has come to the fore. Milling as one of the basic and widespread methods of wood-working strongly depends on electrical energy. Annual...
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Báo cáo lâm nghiệp: " The response of weevil communities (Coleoptera: Curculionoidea) to the altitudinal zones of beech stands" ppt
... System.e response of weevil communities (Coleoptera: Curculionoidea) to the altitudinal zones of beech standsJ. BFaculty of Forestry and Wood Technology, Mendel University of Agriculture ... is impossible to define the outline of the occurrence of the found spe-cies. Many faunal researches suggest the possibility of the occurrence of most of the species, however, often in completely ... to complete the stand characteristics of selected geobiocoenoses with more zoocoenological data and to review the influence of AZ on the occurrence of weevils, therefore to add knowledge of...
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Báo cáo lâm nghiệp: "The role of Hylastes cunicularius Erichson (Coleoptera: Scolytidae) in transferring uropodine mites in a mountain spruce forest" pptx
... importance of the passive transfer of uropo-dine mites assisted by H. cunicularius cannot be overlooked in mountain spruce forests in the Tatra Mountains and, possibly in other mountain areas in ... e role of Hylastes cunicularius Erichson (Coleoptera: Scolytidae) in transferring uropodine mites in a mountain spruce forestB. K, P. Z, J. K Department of Animal Ecology, Institute ... of Forest Ecology, Slovak Academy of Sciences, Zvolen, SlovakiaABSTRACT: e bark beetle Hylastes cunicularius was studied in the Tatra Mountains, West Carpathians, to clarify its role in transferring...
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Báo cáo lâm nghiệp: "The evolution of natural floodplain forests in South Moravia between 1973 and 2005" pptx
... In 1949, the Supported by the Ministry of Education, Youth and Sports of the Czech Republic, Projects No. VaV-SM/6/153/05 and MSM 6293359101.e evolution of natural floodplain forests in South ... relevés. The increasing trend in the number of recorded species may, however, also mean the movement of some of the ecologi-cal factors. In the case of floodplain forests, one of the most ... cam-pestre. e loosening of the canopy due to dying and fall of some of the large oaks is a condition crucial for the development of level 3. e increasing EIV for the light and moisture of the herb...
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Báo cáo lâm nghiệp: "Ecological requirements of some ant species of the genus Formica (Hymenoptera, Formicidae) in spruce forests" pps
... activity of the F. sanguinea ants depending on the quantity of light incident upon the soil surfaceFig. 14. GLM of the occurrence of the F. sanguinea ants depend-ing on the quantity of undergrowth ... activity of the F. pratensis ants depending on the quantity of light incident upon the soil surfaceFig. 10. GLM of the occurrence of the F. pratensis ants depend-ing on the quantity of undergrowth ... 32–40JOURNAL OF FOREST SCIENCE, 55, 2009 (1): 32–40e ants of the genus Formica are a significant component of forest ecosystems. They influence soil qualities and the presence of some plant species...
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Báo cáo lâm nghiệp: "The effect of liming on the mineral nutrition of the mountain Norway spruce (Picea abies L.) forest" docx
... monitoring of forest conditions after liming is required.ere exist a lot of data on the liming effect on the soil chemistry changes but data on the liming effect on the mineral nutrition of ... observation Supported by the Ministry of Education, Youth and Sports of the Czech Republic, Project No. MSM 6215648902.e effect of liming on the mineral nutrition of the mountain Norway spruce (Picea ... characteristics of the spruce stands on limed and not limed plots are shown in Table 1.e evaluation of the mineral nutrition of spruce stands was carried out on the basis of regular collec-tions of needle...
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Báo cáo lâm nghiệp: "The effects of flooding and Phytophthora alni infection on black alder" pps
... test).RESULTS AND DISCUSSIONConfirmation of flooding and P. alni infection effects on black aldere analysis of covariance confirmed that the both factors (flooding and P. alni infection) and their ... condition was Table 1. e effect of long-term flooding and Phytophthora alni infection on the development of black alder saplings Treatment per valid NLength of necrosis (cm)Root biomass (g)Actinorrhiza ... of the factors plant height (covariate), flooding, P. alni and ooding ì P. alni interaction on depend-ing variables (increase in stem length, length of leaves and biomass of leaves, roots and...
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Báo cáo lâm nghiệp: "A survey of forest pollution with heavy metals in the Natural Forest Region (NFR) Moravskoslezské Beskydy with particular attention to Jablunkov Pass" docx
... be-tween the region of Jablunkov Pass and the rest of A survey of forest pollution with heavy metals in the Natural Forest Region (NFR) Moravskoslezské Beskydy with particular attention to Jablunkov ... detected in the area of the Jablunkov Pass in comparison with the remaining area of NFR. e spatial distinctness of distribution of this element in the Jablunkov Pass is confirmed in the forest ... distinctness of the area around the Jablunkov Pass is confirmed by the evaluation of the data of forest nutrition survey. Particularly, it consists in the high contents of phytotoxic heavy metals. ...
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Báo cáo lâm nghiệp: " The influence of Picea abies on herb vegetation in forest plant communities of the Veporské vrchy Mts" ppt
... reactionNutrients0.3–0.6–1.01.0Fig. 2. Relation between the proportion of Picea abies and other variables including EIV (CCA with the proportion of Picea abies as the only environmental ... based on comparing the composition of herb species within three groups of relevés. e groups are created with reference to the proportion of Picea abies in tree layers on the sampling plot. ... Shannon-Wiener index, together with the increasing proportion of Picea abies is also proved by the correlations in ordination analysis (Fig. 2).e permutation test suggested to take into...
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Báo cáo lâm nghiệp: "The survey of some factors affecting bark lesion development caused by Phytophthora cactorum on common beech and other broadleaved trees" pdf
... Czech Republic, Project No. QH71273.e survey of some factors affecting bark lesion development caused by Phytophthora cactorum on common beech and other broadleaved treesV. H, K. Č, ... Extent of bark lesions caused by P. cactorum isolates Nos P066.07, P078.07 and P100.07 on syca-more, beech, alder, lime, ash and oak saplingsFig. 3. Extent of bark lesions caused by P. cactorum ... pathogen inoculation was sycamore (mean of lesion 48.16 mm; P < 0.05) and the sec-ond one was beech (mean of lesion 22.07 mm). The differences among lesion extent on beech, alder and lime were...
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