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

... 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).  13 C has been increasing since the early 1990s, indicating biological recovery. DISCUSSION Variation in the 13 C isotopic signal at the...

Ngày tải lên: 07/08/2014, 03:22

... 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

... 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 inse...

Ngày tải lên: 07/08/2014, 10:21

... 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):...

Ngày tải lên: 07/08/2014, 10:21

... 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 Apr...

Ngày tải lên: 07/08/2014, 03:22

... 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 clas...

Ngày tải lên: 07/08/2014, 03:22

... 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...

Ngày tải lên: 07/08/2014, 10:21

... 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 scenar...

Ngày tải lên: 07/08/2014, 10:21

... 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. Acknowledgements Present investigations on this research plot and the testing of prosperity of forest trees spec...

Ngày tải lên: 07/08/2014, 10:22

... 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 repeated measurement structure of periods nested within a plot. Thus, in the end we decided not to include such a t...

Ngày tải lên: 07/08/2014, 16:20