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

Báo cáo lâm nghiệp: "Can 13C stable isotope record of Norway spruce tree rings display the effect of environmental conditions" pot

... C3 plants by the carboxylating enzyme Rubisco (~ 27‰) and during diﬀusion through the stomata (~ 4.4‰), which is linked to photosynthesis through the ratio of inter-cellular to atmospheric ... pollution of the area (Figs. 2 and 3). 13C has been increasing since the early 1990s, indicating biological recovery.DISCUSSIONVariation in the 13C isotopic signal at the end of the 19th ... acidiﬁcation in this area. e research was carried out in a forest stand located in the catchment of the Čertovo Lake in the Bohemian Forest Protected Landscape Area. is area was ex-posed to heavy...

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 97lings from the forest nursery planted in the substrate from the declining forest stand, 6 – spruce seedlings from the nursery planted in the soil substrate from the beech stand).An ... the experiment in which we compared the seedlings planted in the soil with intensive impact of spruce litter and the seedlings planted in the sub-strate from the beech stand (without the in uence...

Báo cáo lâm nghiệp: "Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in diﬀerent gradation conditions" ppsx

... felled by the wind in autumn were checked for the presence of cambioxylophagous in- sects in next spring and autumn. Merocoenoses of cambioxylophagous insects in wind-felled trees in the area ... the fauna of bark beeles in the Beskids. Zoologické a entomologické listy, 2: 95–110. (in Czech)N V. (1962): Research into the succession of cambioxy-lophagous insect on trees declining ... spectrum of cambioxylophagous insects (34 species recorded in the study, bark bee-tles predominating among them) is related to the fact that the research was conducted in the area with endemic populations...

Báo cáo lâm nghiệp: "Soil environment and nutrient status of Norway spruce (Picea abies [L.] Karst.) underplantings in conditions of the 8th FAZ in the Hrubý Jeseník Mts" potx

... proportion of these elements in the assimilatory organs of Norway spruce. – High uptake of toxic elements (Al, S) is another factor negatively in uencing the Norway spruce nutrient status in the area ... Norway spruce forest decline in the region Horný Spiš (Northern Slovakia). Journal of Forest Science, 53: 93–100.E F.H., H R.F. (1990): A new fertilization strategy in declining forests. ... decreasing content of these nutrients in needles. An opposite correlation was determined for aluminium: with an increasing proportion of this element in nutrition the coeﬃ -cient of damage increases...

Báo cáo lâm nghiệp: "Neuroptera, Raphidioptera and Mecoptera assemblages inhabiting young spruce (Picea abies) forests: dominance structure and seasonal activity patterns" docx

... a.s.l.) in very young spruce forests (10–20-year-old). All Malaise traps were installed in small forest clearings, minimally 30 m inwards the forest. e forest clearings are covered mainly by ... arundinacea) and shrubs like bird cherry (Padus racemosa) are growing there occasionally too. e traps were exposed from the beginning of April to the end of October. From April to July, they ... carried out in the industrially aﬀected region (Ostravská pánev Plateau) with forest coverage 9–20% (dominance of Norway spruce, Picea abies, 30–50%) and in the Nízký Jeseník Hills (forest coverage...

Báo cáo lâm nghiệp: " Humus conditions and stand characteristics of artificially established young stands in the process of the transformation of spruce monocultures" pdf

... with increasing depth (Figs. 2 and 3) in all stands and the lowest values were determined in the H layer. e lowest values in forest ﬂoor in the H horizon (3.5 and 3.7) as well as in the organomineral ... soil in a spruce stand and in mixed stands is included into an exchangeable zone (aluminium zone of buﬀering). In the beech stand, it is possible to classify soil according to pH values to a bor-derline ... soil-improving and reinforcing species in the interest of sustainable development. In its favourable position to spruce, it can provide rather large volume of relatively valuable wood. Nevertheless,...

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

... with a single exception of the ﬂ ushing midpoint date, proving that the spa-tial arrangement of blocks used was very ineﬃ cient in handling the microenvironmental variation with- in the trial ... However, the question remains how the variation in traits of interest can be linked with directly measurable environmental indicators.  e aim of this study was to clarify to what extent the spatial ... centre of the plot, whereas they decrease to- wards the margins, in uenced microclimatically by the adjacent beech stands. Consequently, soil moisture is high along the southern side of the tri-al...

Báo cáo lâm nghiệp: " An estimation of willingness to pay for asparagus (Asparagus racemosus Willd.) collectors in Makawanpur District, Nepal" ppsx

... collectors was 4.4 NR/kg. In the second scenario, if the forest in the RCNP is managed in such a way that both the current harvesting rate of asparagus is sustained and they are legally allowed to ... income (8820 NR) of collec-tors (Table 1). erefore, the income from asparagus is vital to their livelihood.Collectors’ Willingness to Pay (WTP) for the two scenariosSustainable harvesting ... amounts were suggested till the respondent declines to any more. At the same time, the respondents were reminded that by committing payment to a certain amount their proﬁt (per kg) will decrease...

Báo cáo lâm nghiệp: "rowth and health state of silver fir (Abies alba Mill.) in the ridge area of the Jizerské hory Mts" docx

... was evalu-ated according to the parameters of all living ﬁr indi-viduals in 2007 and according to 20% of the highest individuals to avoid an undesirable distortion of the Table 1. Average ... will therefore be examined and evaluated in the years to come.AcknowledgementsPresent investigations on this research plot and the testing of prosperity of forest trees species in- cluding the ... diﬀerences in mortality between the planting variants and by the survival of declining individuals with the growth stagnation.Nutrient state of the tested plantings was indicated by the results...

Báo cáo lâm nghiệp: "Eﬀect of species composition, stand density and site index on the basal area increment of oak trees (Quercus sp.) in mixed stands with beech (Fagus sylvatica L.) in northern France" potx

... referring to these data, the term “modelbuilding data set” when referring to the calibra-tion data. In order to examine the performance of the model,we used the ﬁxed part of the model. The following ... measurements [51] to take into account the repeatedmeasurement structure of periods nested within a plot. Thus, in the end we decided not to include such a term in the model. The average bias of the model ... eﬀects not yet included in the model. The behaviour of the model is demonstrated in Figure 4 fortrees with DBH ranging from 15 to 40 cm. Contrasting levelsof the in uencing factors (Rdi, admixture...

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