Báo cáo lâm nghiệp: "properties of Norway spruce timber Comparison between fast- and slow-grown stands and influence of radial position of sawn timber" pdf
Báo cáo lâm nghiệp: "properties of Norway spruce timber. Comparison between fast- and slow-grown stands and influence of radial position of sawn timber" pdf
... 1996.Original articleBending properties of Norway spruce timber. Comparison between fast- and slow-grown stands and influence of radial position of sawn timber I. Robert Kliger*Mikael ... studs from fast-grown stands alone.2. MATERIALS AND METHODS2.1. Specimen preparation2.1.1. Fast-grown stands For a more detailed description of the twofast-grown stands, see ... the fast-grown stands (FG-BL) and from the slow-grown stand (SG-BL).Both stands are represented by about 250studs and each stud group (i.e. core, inter-mediate and mature)...
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Báo cáo lâm nghiệp:"Inter-regional variability in site index models for even-aged stands of stone pine (Pinus pinea L.) in Spain" potx
... were identified and selectedclose to the temporary production plots, installed by the Department of Silviculture of the CIFOR-INIA between 1992 and 2000, in even-aged stands of Pinus pinea in ... black spruce stands: tests of hypotheses,For. Sci. 45 (1999) 484–491.[4] Beland M., Bergeron Y., Height growth of jack pine (Pinusbanksiana) in relation to site types in boreal forests of Abatibi,Quebec, ... from 96 stem analysis and 37 permanent plots in even-aged stands of stone pine (Pinus pinea L.) in four regions of Spain(Central Range, Northern Plateau, West Andalusia and Catalonia) are used...
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Báo cáo lâm nghiệp: "Unexpected disproportion observed in species composition between oak mixed stands and their progeny populations" pdf
... two-species stands into one-species stands. Our objective was to analyze the species composition of progeny plantations established from seeds gained from oakselected seed stands of mixed composition. ... selected seed stands located in Legnica (51◦12’ N, 16◦10’ E) and in Jamy (53◦34’ N,18◦55’ E). Species composition of both stands is given in Table I.Although the origin of adult stands is ... species composition of natural regenerations and progeny plantations established from twomixed oak stands in Jamy and Legnica, Poland. Despite equal proportions of pedunculate (Quercus robur) and sessile...
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Báo cáo lâm nghiệp: "Multivariate statistical approach to comparison of the nutrient status of Norway spruce (Picea abies [L.] Karst.) and top-soil properties in differently managed forest stands" potx
... part of EC. Plant-soil interactions were observed on an example of natural spruce stand (NSS), semi-natural spruce stand (SNSS) and allochthonous spruce stand (ASS) in conditions of the spruce ... fluctuations of soil moisture and many pests. Localities character-istic of central uplands of the Hrubý Jeseník Mts., where natural spruce stand, spruce stand influenced by silvicultural activities and ... analysis of variance (MANOVA) was applied. CLU and MANOVA were used to evaluate the close-ness of the nutrient status of the spruce stands and to assess the closeness of chemical properties of the...
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Báo cáo lâm nghiệp: "Variation in wood properties among five full-sib families of Norway spruce (Picea abies)" ppt
... variation for clearwood MOE and MOR in progenies from a natural stand of Norway spruce. The relationships between density and MOE and MOR arewell known [20]. Since the dependency of density on the me-chanical ... j, αγijis the random interaction between family i and blockj and εijnis the random residual. The random terms are assumed toTable II. Total means, p-values, and coefficient of variation (CV)from ... transition between juvenile and mature wood on the north facing side of stem.One board was studied per log. The exact radial position of each sam-ple was described as the distance and number of rings...
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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
... e assessment of the bark beetle occurrence was based on the mean volume of infested (standing and lying) trees removed an-nually from 1 ha of stands. e classification of the stands according ... 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 ... – “high” and “catastrophic” level) – on about 40% of the area. In 2006 the percentage of the area of stands in these classes were 22 and 59%, respectively. e strongly attacked stands occurred...
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Báo cáo lâm nghiệp: "Initial evaluation of half-sib progenies of Norway spruce using the best line" potx
... trials and Supported by the Czech University of Life Sciences in Prague, Faculty of Forestry and Environment, Project No. 41130/1312/413162. Initial evaluation of half-sib progenies of Norway spruce ... method is restricted to the random component of the model. REML procedure consists of a search through the entire range of parameter space and the computation of the log-likelihood for each ... values in the Y vector, and estimates of G and R, the BLUP proce-dure provides the best linear unbiased estimator (βˆ ) of β and the best linear unbiased predictor (uˆ ) of u. e predictors...
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Báo cáo lâm nghiệp: "Comparison of the impact of blue spruce and reed Calamagrostis villosa on forest soil chemical properties" pot
... leaching of basic cations of Ca and Mg from soil.is study aims to compare impact of 20 year last-ing cover of blue spruce, and clear-cut reed Calama-grostis villosa on the former Norway spruce ... P et Supported by the Ministry of Agriculture of the Czech Republic, Research Project No. MZE 0002070203. Comparison of the impact of blue spruce and reed Calamagrostis villosa on forest ... decreased and blue spruce forest stands are be-ing converted with the autochthonous tree species (mostly Norway spruce, but also European beech etc. – B, K 2008).Production potential of...
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Báo cáo lâm nghiệp: "The first reaction of soil mite fauna (Acari, Mesostigmata) caused by conversion of Norway spruce stand in the Szklarska Poręba For" potx
... found in experimental plots with stands non conversed (1, 3 and 7) and with stands during conversion (2, 4 and 8) Stands non conversed Average density (m2) Stands during conversion Average density ... different than in spruce stands with close distance to mixed forests. Table 6. Number of Mesostigmata mites species found on the plots with stands non conversed (1, 3 and 7) and with stands during ... 2, 3 and 4 were situated in relatively close distance to the stands with occurrence of beech (less than 100 m) and plots 7 and 8 were located in pure spruce stands without any amount of beech...
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Báo cáo lâm nghiệp: "Response of the Norway spruce (Picea abies [L.] Karst.) root system to changing humidity and temperature conditions of the sit" ppt
... of solar radiation on the soil in the existing Norway spruce groups of stands. CONCLUSIONe Norway spruce decline and dieback in lower forest altitudinal vegetation zones has become one of ... causes of the decline of spruce stands in five selected regions of the Czech Republic – from FAVZ 2 to FAVZ 5 in nutrient-rich and acidic sites. With respect to the size of the pa-per and to ... station is situated at an altitude of 452 m and at a distance of 13 km from the analyzed forest stands in Moravec and 30 km from the analyzed forest stands in Radiměř). e presented data...
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