Báo cáo lâm nghiệp: " Biomass and composition of understory vegetation and the forest floor carbon stock across Siberian larch and mountain birch chronosequences in Iceland" docx
Báo cáo lâm nghiệp: " Biomass and composition of understory vegetation and the forest floor carbon stock across Siberian larch and mountain birch chronosequences in Iceland" docx
... the dominance of dicots in the ground flora of the birch forests (Fig. 4). 3.7. Carbon stocks of the forest floor Changes in plant growth forms altered the relationshipbetween C -stock and forest ... DISCUSSION4.1. Effects of afforestation on the ground vegetation biomass and composition Both larch and the native birch caused a decline in the ground vegetation biomass of an open heathland pasture after ... Changes in understory biomass, forest floor carbon (C) stock and vegetation composition were studied in six age-classes of Siberian larch (Larix sibirica) and two age-classes of native birch (Betula...
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Báo cáo lâm nghiệp: " Selected physical properties of initial soils on the outside spoil bank of the Bełchatów brown coal mine" pot
... At the first place the covering of the northern slope of the outside spoil bank of the Bełchatów brown coal mine consisted of the follow-ing formations: sands (loose and coarse), medium sands ... years since the beginning of reclamation of the northern slopes of the outside spoil bank of the Bełchatów brown coal mine by reforestation there have been formed initial soils with the humus ... pointed out that the textural make-up was the main factor determining the efficiency of land reclamation, and therefore his method of the point estimation of suitability of lands for reclamation...
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Báo cáo lâm nghiệp: "Arbuscular mycorrhizal colonization of vascular plants from the Yungas forests, Argentin" docx
... they are declining dueto the ever-increasing demand for timber and to the need of agriculturally suitable land [61]. In the Yungas, an example of an indigenous tree used for firewood, pulp, and ... the possibility of the occurrence of other kinds of mycorrhizal associations in the speciesexamined, an absolute dominance of AM was observed in these plants. These results are in agreement with ... by the presence of hyphae and vesicles in the root samples [59, 79]. The frequent occur-rence of vesicles in the species studied indicates that a largepart of the AM fungi belong to the Glominae,...
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Báo cáo lâm nghiệp: "Biomass increment and carbon balance of ash (Fraxinus excelsior) trees in an experimental stand in northeastern France" docx
... from the end of the preceding growing season (1994) to the beginning of the current one. In comparing the carbon balance to biomass increment, we assumed that carbon uptake during the growingFigure ... compare the biomass incre-ments and carbon balances of the study trees. 2. MATERIALS AND METHODS2.1. Site The study was conducted in the state forest of Amance, in the north-east of France, ... for the current year and for the previous one. Then, the relative biomass increment of each increment sample wascalculated as the ratio of the basal area increment to the basal area – the cross...
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Báo cáo lâm nghiệp: "Biomass, litterfall and nutrient content in Castanea sativa coppice stands of southern Europe" ppt
... standthan in the Italian stands. N, Ca and Mg recycled in the same proportion in all stands. In contrast,twice as much P and K was recycled in the Italian stands ... of the Massif Central in the Cevennes mountains, about 100 km north of Montpellier.Although there were few climatic differences and the elevations of the different stands ... allows reforesta-tion on much better soils than in the past,involving larger amounts of nutrients in the biogeochemical cycle of forests; ii) the in- creased nutrient input...
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Báo cáo lâm nghiệp: "Spatio-temporal patterns of the Norway spruce decline in the Beskid Śląski and Żywiecki (Western Carpathians) in southern Poland" pot
... concerns all mountain forests, in- cluding the area of the Beskidy Mts. (Beskid Śląski in the northern, Beskid Żywiecki in the southern part of the area described in this paper), located in the western ... almost the whole area of the West-ern Beskidy region. Along with the increase of the size of salvage cuttings (including the removal of in- fested trees) the area of stands affected by the forest ... conditions.MATERIAL AND METHODSe assessment of the intensity and dynamics of the dying of stands was carried out on the basis of the data collected in the SILP System (the Information System of State Forests)...
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Báo cáo lâm nghiệp: " Long-term effects of CO2 enrichment on bud phenology and shoot growth patterns of Norway spruce juvenile tree" potx
... Academy of Sciences of the Czech Republic, Grant No. A600870701, and by the Ministry of Education, Youth and Sports of the Czech Republic, Projects No. 2B6068 and MSM 6215648902, and by the Governmental ... RESULTS AND DISCUSSION At the end of growing season 2002, the mean tree height and stem diameter (at one tenth of tree height above the ground) were 3.5 m and 5.7 cm and 3.3 m and 5.6 cm in A and ... differed insignificantly.Bud phenology was observed on apical and lat-eral buds during the growing seasons 1997–2002. The beginning of the growing season was con-sidered as that date in spring...
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Báo cáo lâm nghiệp: "Some methodological aspects of the National Forest Inventory and Monitoring in Slovakia" pptx
... main tree species, the input data being the tree diameter and height, quality of the bottom third of the stem (A, B, C), stem damage (yes, no), and in the case of the beech also the age and ... upon the decision of the Ministry of Agriculture from July 1, 2004. It was performed on all lands covered by forest tree species, i.e. on forest lands and on other forested lands including the ... within almost all NFIs in Europe. The assessment methods for obtaining necessary information vary between the countries; they differ in the definitions of individual parts of this wood, in the...
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Báo cáo lâm nghiệp: "Interactive effects of drought and pathogens in forest trees" docx
... change the species composition of the biocenosis favouring the survival of the most xerophytic species, Q. pubescens, and the reduction in number of individuals of Q. cerris and Q. frainetto ... areas in the Southern Hemi-sphere, e.g. New Zealand, Chile and Australia [56], and in the Northern Hemisphere, e.g. Northeast of the USA [158],East of China [178] and Europe [71, 97, 160]. In ... agents, including biotic and abiotic factors. The concept is illustrated by a decline spiral constituted of threetiered inward rings, corresponding to the predisposing, incit-ing, and contributing...
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