Báo cáo lâm nghiệp:" Ring shake in chestnut: Anatomical desc

Báo cáo lâm nghiệp: "Mineral nutrition in relation to the Norway spruce forest decline in the region Horný Spiš (Northern Slovakia)" docx

... Supported by Grant Agency of the Slovak Republic, Project No. 2/4159/04. Mineral nutrition in relation to the Norway spruce forest decline in the region Horný Spiš (Northern Slovakia) Ľ. D 1 , ... (3): 93–100 97 lings from the forest nursery planted in the substrate from the declining forest stand, 6 – spruce seedlings from the nurs...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Species composition in low mountain beech (Fagus sylvatica L.) stands in the Bieszczady National Park under the global warming" doc

... conditions. SHORT COMMUNICATION Species composition in low mountain beech (Fagus sylvatica L.) stands in the Bieszczady National Park under the global warming D. S 1 , R. J 1 , G. R 1 , ... in the ﬁr volume and the increase in beech volume was collected. – However, the increasing share of beech, accompa - nied by a decrease...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its effects on cambioxylophagous fauna" docx

... chemical thinning consists in the fact that trees killed by chemical treatment and left in the stand to their natural Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its eﬀects ... Institute, Brandýs nad Labem, Czech Republic ABSTRACT: Chemical thinning was applied in blue spruce (Picea pungens Engelm.) stands by the appli...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Timber harvesting in the ukrainian carpathians: Ecological problems and methods to solve them" ppsx

... using engineering structures and drainage and have rather large longitudinal inclines, which in most cases does not allow using them for the passage of wheeled machinery skidders and tractors ... damage to the bearing surface and soil sampling. Before the beginning of investigations the radius of turns, lengths of linear plots, weight and geometrical parameters...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Multiaged silviculture in North America" potx

... is is increasing the interest in multiaged silviculture in North America as in other regions of the world. An additional factor in uencing current management is the attempts to integrate ... (1965). e southern pine forests in Arkansas have also been a focal point for multiaged silvicultural pro- cedures in the North America. e procedure in these loblolly pine/shortl...

Ngày tải lên : 07/08/2014, 04:20

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Báo cáo lâm nghiệp: "Available nitrogen in the surface mineral layer of Serbian forest soils" docx

... subtraction of the initial content of available mineral N (for the anaerobic incubation of NH 4 + -N content); N initial ‒ initial content of available mineral N (for the anaerobic incubation of NH 4 + -N ... the mineralization of nitrogen in the surface mineral layer of forest soils is diﬀ erent from that in the forest ﬂ oor. Besides, total c...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Seasonal fluctuation in germination of short and longterm stored Norway spruce" ppsx

... characteristics of GE and GC of analysed samples of short- term stored seed (S) and long-term stored seed (L) in the ﬁrst year (T1) and the second year of testing (T2) Variant N Germination energy (GE %) Germination ... values of germination energy (GE) and germination capacity (GC) in individual months (M = 1, 2, 3 … 12), in total 10 for short- term (...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "A change in structural diversity and regeneration processes of the spruce virgin forest in Nefcerka NNR (TANAP) in relation to altitude" docx

... diﬀerence in the index was conﬁrmed in the spruce virgin forest in the altitudi- nal range of 1,300–1,400 m. e analysis of the structure of the spruce virgin forest in Nefcerka NNR assessed according ... Education of the Slovak Republic, Project No. 0082-06. A change in structural diversity and regeneration processes of the spr...

Ngày tải lên : 07/08/2014, 10:22

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Báo cáo lâm nghiệp: "Compression stress in opposite wood of angiosperms: observations in chestnut, mani and poplar" ppsx

... involved measurements of RGS and longitudinal drying shrinkage, and were presented in de- tails in previous papers [10, 11]. New data on poplar are also shown, including measurements of RGS and ... contin- uum in behaviour from the “normally” tensile stressed wood to the compression stressed wood. Inside the group of nor- mal wood samples (including compression values),...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Age trends in genotypic variation of wood density and its intra-ring components in young poplar hybrid crosses" doc

... veriﬁed in future studies. The mean wood density of a ring is a composite of several intra-ring components, including wood density of early- and latewood and width of early- and latewood, that ... cumulated ring properties of poplar hybrids: (a) ring width and mean wood density, (b) ring width and minimum wood density, (c) ring width and maximum wo...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Carbon accumulation in Finland’s forests 1922–2004 – an estimate obtained by combination of forest inventory data with modelling of biomass, litter and soil" potx

... stock of litter and soil and its annual changes in Finland’s forests between 1922 and 2004. The black lines show these variables when the transfers of carbon in litter and soil between forests and ... uses in Finland’s forests between 1922 and 2004. Figure 6. Annual changes in the carbon stock of litter and soil in Fin- land’s forests between 19...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Drought conditioning improves water status, stomatal conductance and survival of Eucalyptus globulus subsp. bicostata seedlings" ppt

... between survival and RWC 36-days after transplanting in seedlings of E. globulus. subsp. bicostata Each point represents the mean value of ﬁve observations of each treatment. to plant survival and ... among prove- nances of several Eucalyptus [25, 42], between and within subspecies of E. globulus [15, 54], as well as among clones of E. globulus subsp. globu...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp:" Ring shake in chestnut: Anatomical description, extent and frequency of failures" pdf

... radially into a neighboring ring and then further proceed into the earlywood tissue. This “jumping” from ring to ring could also occur several times in the same ring shake failure, giving the ... processing, and the often observed ring- to -ring jumping pattern of shakes lets us presume that the set off mechanism leading to this failure has to be related to stresses ac...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo khoa học: "Ring shake in chestnut (Castanea sativa Mill.): State of the art" pps

... P. Fonti et al.Ring shake in chestnut: State of the art Review Ring shake in chestnut (Castanea sativa Mill.): State of the art Patrick Fonti a *, Nicola Macchioni b and ... help in comprehending the mechanism that causes breaking, in particular the type of stress that is principally involved in the develop- ment of the fracture as well as the...

Ngày tải lên : 08/08/2014, 14:20

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Báo cáo lâm nghiệp: "Sexual reproduction in Populus I. Some physiological and biochemical events of the progamic phase" pdf

... C. (1987) Molecular and cellular events of self-incompatibility. Int. Rev. Cytol. 107,333-366 Hawkes R. (1982) Identification of concanavalin A-binding proteins after sodium dodecyl ... presence of P nigra and P alba pol- len tubes inside stigmatic tissues. How- ever, increasing protein bands were detectable, 0-20 h after pollination, only in c...

Ngày tải lên : 09/08/2014, 04:20

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