Báo cáo lâm nghiệp: "Health status of forest stands on perma

Báo cáo lâm nghiệp: "Health status of forest stands on permanent research plots in the Krkonoše Mts" pptx

... METHODS Description of permanent research plots Similarly like in the evaluation of the condition and development of soils the condition and development of health status of forest stands were evaluated in ... described on the basis of evaluation of transition matrices describing the probability of a change in the assess- ment of defoliation...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Horizontal structure of forest stands on permanent research plots in the Krkonoše Mts. and its development" ppsx

... optimizing the forest ecosystem management in national parks of the Krkonoše Mts. the horizontal structure of forest stands was exactly evaluated on 38 permanent research plots, both in juvenile ... (natural seeding, advance growth, plantations) and in the tree layer. MATERIAL AND METHOD Description of permanent research plots In the territory o...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Regeneration of forest stands on permanent research plots in the Krkonoše Mts" pdf

... Scotch pine, silver birch and other tree species of diﬀerent age and size. Within the forest cycle the Fig. 8. e natural layering of beech in the ecotone of the upper forest limit in the Krkonoše ... results showing aggregation of regeneration on PRP 37. CONCLUSIONS e presented results conﬁrm high potential of natural regeneration on permanent resear...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Structure and development of forest stands on permanent research plots in the Krkonoše Mts" pdf

... ability in higher elevations and tolerates conditions in the ecotone of the upper forest limit, although its optimal growth and production is reached in the conditions of the 5 th and 6 th forest ... spruce. CONCLUSIONS  e presented research on structure and development of forest stands in national parks of Krkonoše Mts. describes the stand...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Uncertainty estimation of biomass expansion factors for Norway spruce in the Czech Republic" pot

... sensitivity in uncertainty of the BEF by ignoring the uncertainty in stand age increased the error in young and old age-classes. Having the uncertainty in stand age included with the Monte Carlo ... 60% of constant intraplot resid- ual variance showed that the best way to increase the preci- sion of BEFs would be the reduction in error of the biomass and...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Radial variation of wood density components and ring width in cork oak trees" pptx

... outward rings. Until the beginning of cork extraction the accumulation of extractives should contribute to the higher density values found in the innermost rings, as seen for the Y-trees in Fig- ure ... particu- larly constant and was not signiﬁcantly in uenced by any of the studied sources of variation. 4. DISCUSSION In spite of the diﬃculty in identifying ri...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Relative efficiency of alternative methods to evaluate wood stiffness in the frame of hybrid larch (Larix × eurolepis Henry) clonal selection" potx

... selection using indirect method (9% instead of 11.5% – Tab. IX). Meanwhile, the lower estimate of gain slightly affects the final selection of the clone: in this sample (Tab. X) 4 to 5 of the first ... by the cutting in the sapwood of each board of a long specimen (from 362 to 712 mm long with a cross section of 20 × 20 mm) containing the ring chosen for the...

Ngày tải lên : 08/08/2014, 01:22

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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

... 64–72 Zinc The contents of zinc are higher in the area of Jablunkov Pass than in the remaining area of NFR (Fig. 3). Its higher contents are evident in the upper - most mineral horizon along the ... to the honey fungus impact. CONCLUSION e results of the survey of forest nutrition in the NFR Moravskoslezské Beskydy conﬁrmed the sup- posed high conten...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Eﬀects of selective thinning on growth and development of beech (Fagus sylvatica L.) forest stands in south-eastern Slovenia" docx

... trees in the ﬁrst thinning and thinning intensities, taking account of economical factors [46, 51]. In Slovenia, selective thinning is the main type of thinning [34]. However, the thinning of ... chosen again during the last thinning. In the T2, 258 crop trees were chosen in the ﬁrst thinning, and only 62% of these trees were chosen again during the last thinni...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Eﬀects of microsite variation on growth and adaptive traits in a beech provenance trial." pps

... for the modelling of autumn discoloration.  e length of the vegetation period was then assessed as the diﬀ erence between the midpoints of autumn discoloration and spring ﬂ ushing. As the ... University in Zvolen, Zvolen, Slovakia ABSTRACT: The effects of the within-trial spatial variation of environmental factors on phenotypic traits were studied in the Sl...

Ngày tải lên : 07/08/2014, 10:21

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