Báo cáo lâm nghiệp: "Verification of the food supply to game under conditions of the floodplain forest ecosystem" docx

... standardized stocks of game, which sets the standardized stock of the particular species of hoofed game not to be higher than 1 individual of hoofed game per 2 ha of the game preserve area. With the ... and 0.83% is of low carrying capacity. Numerical stock of game At the end of the last century, there were high stocks of game in the Soutok Game Preserve and, therefore, the stocks were reduced. ... into food supply under the conditions of the ﬂoodplain forest ecosystem show the suﬃcient production of biomass utilizable by game in the monitored area. erefore, there is no reason for the...

Báo cáo lâm nghiệp: "Heartwood and sapwood variation in Eucalyptus globulus Labill. trees at the end of rotation for pulpwood production" potx

... heightlevels: at the base, at 5% of total height and subsequently at intervals of 10% up to 65% and at 90% of total tree height, that corresponded to a diameter of approximately 7 cm and the limit of the ... 88% of the total vari-ation while between-tree variation accounted for 5% to 9% of the total variation. The radial width of sapwood (Fig. 5) remained relativelyconstant within the trees from the ... base to the 55% heightlevel, corresponding to a mean value of 38.0 mm. Sapwoodincreased at the 65% height level to 49.2 mm and decreasedfrom this level towards the top. The analysis of variance...

Báo cáo lâm nghiệp: "Macronutrients in tree stems and foliage: a comparative study of six temperate forest species planted at the same sites" pps

... importantin the long-term perspective. From the point of view of nutrientbalance and the sustainability of forest management it wouldbe of special interest to make further studies of species ... than in other species (with the exception of lime). The study of Canadian hardwoods referred to above [13] showedthat while the Ca concentration in the heartwood of red oak waslow; the concentration ... between the species than by site conditions. This is in correspondence with the previous inves-tigations of forests in southern Sweden. In spruce forests in the province of Scania, Ca was the only...

Báo cáo lâm nghiệp: " Soil and tree water relations in mature oak stands of northern Germany differing in the degree of decline" pdf

... the sandy subsoil of bothstands. In the damaged stand, this led to a con-siderable variation in the exploitable water stock.In the Hakel Forest, the subsoil of the ... irre-spective of the degree of damage of the stand, for comparisons of PWP, AWP andRWC between the vitality classes of the trees. PWP and AWP clearly followed the evolution of ... of the gravitational potential). In the majority of the branches measured at this date, AWP wasbelow -2.2 MPa, irrespective of the degree of damage of the tree. At the...

Báo cáo lâm nghiệp: "Coarse woody debris carbon stocks in natural spruce forests of Babia hora" potx

... dead wood was collected in the field during the inventory of the forests of the nature reserve Babia hora. The data were used for the calculation of CWD timber volume. In the next step, CWD timber ... If the average basic wood density of coarse woody debris is used for the conversion of deadwood volume to carbon stock, the results show that carbon stock is underestimated in the stage of ... results revealed that carbon storage in dead-wood varies depending on the developmental stage of the forest, while the highest amount of carbon is stored in the stage of breakdown (Table 2). is...

Báo cáo lâm nghiệp: "Moisture effect on carbon and nitrogen mineralization in topsoil of Changbai Mountain, Northeast China" pptx

... process of C mineralization is complex and might be co-regulated by other factors such as SOC and total N content of soils (G, G 2002). At the end of the incubation experiment, the quan-tities ... investigated the relationship between soil moisture and mineralization of C and N in soils with different vegetation types on the northern slope of the Natural Reserve Zone of Changbai Mountain. The ... mineralization, but the effect on NH4+-N mineralization was not significant. The complex mechanism of their impact on the soil C and Nmineralization of Changbai Mountain remains to be studied further...

Báo cáo lâm nghiệp: "Preliminary study on phloemogenesis in Norway spruce: inﬂuence of age and selected environmental factors" ppsx

... the factor of age, the fi nal numbers of cells of par-ticular tissues (EP, AP, LP) did not diff er consider-ably, however, there were diff erences of weeks in the timing of the formation of the ... cells. To conclude, the number of cells is not the only important aspect for the description of the phloem cell formation.  e timing of their formation, it means the time when the transport of ... parameters of the trees from both these plots correspond to the values of the older plot of Rájec-Němčice research site.  at is why we compared the results of G (2007) with the results...

Báo cáo lâm nghiệp: " Fungi associated with Tomicus piniperda in Poland and assessment of their virulence using Scots pine seedlings" doc

... introduced to the United States [7, 8].Tomicus piniperda is one of the most destructive pests of pineforests in Europe, where it is considered to be a secondary col-onizer of pine tree stems. Tomicus ... states. Ophiostomatoidfungi, including the genera Ceratocystis, Ophiostoma, Cera-tocystiopsis and their anamorphs, are the most important as-sociates of scolytids [20, 54, 57]. These fungi include ... were collected from the phloem around eggs and larvalgalleries, and from the discoloured sapwood underneath the galleries to a depth of 20 mm into the sapwood. The surface layer of phloemwas removed...

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

... physiological traits in response to drought. However it was not possible to relate these diﬀer-ences to the dryness of the seed origin. These results sup-port the expectation suggested in a previous ... plants received a propor-tion of the water used by C plants of their respective provenance: at the beginning of the drought period, S plants received 50% of controland, the amount was lowered by ... values of Ψπ100and levels of stomatal activitywere related to the dryness of the sites of origin [57].Despite its growth responses, Nullo Mountain was quitewell adapted to drought survival, which...

Báo cáo lâm nghiệp: "Variation in wood properties among ﬁve full-sib families of Norway spruce (Picea abies)" ppt

... facing side of the boards. The needle followed the grain and left a track in the wood. The angle of this track relative to the longitudinal direction of the boards wasmeasured by a protractor in ... on the sample from tree n in family i inblock j. μ is the total mean, αiis the fixed effect of family i, γjis the random effect of the blocks, βXijnis the covariate term of which X is the ... re-lated to tracheid width, tracheid wall thickness and the wall- to- lumen ratio of the tracheids [36]. These characteristics areagain closely related to radial growth (RW) since the propor-tion of...

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