Báo cáo lâm nghiệp: "Characteristics of 3rd (Querci-fageta s lat ) and 4th (Fageta (abietis) s lat ) vegetation tiers of north-eastern Moravia and Silesia (Czech Republic)" pps

Báo cáo lâm nghiệp: "Characteristics of 3rd (Querci-fageta s. lat.) and 4th (Fageta (abietis) s. lat.) vegetation tiers of north-eastern Moravia and Silesia (Czech Republic)" pps

Báo cáo lâm nghiệp: "Characteristics of 3rd (Querci-fageta s. lat.) and 4th (Fageta (abietis) s. lat.) vegetation tiers of north-eastern Moravia and Silesia (Czech Republic)" pps

... level. Keywords: forest-typological classification system; vegetation tiers; Querci-fageta s. lat. ; Fageta (abietis) s. lat. ; charac- teristics of forest ecosystems; north-eastern Moravia and Silesia; ... pre- sented by 3 rd (i.e. geobiocenoses of Querci-fageta s. lat. ) and 4 th (Fageta (abietis) s. lat. ) vegetation tiers in north-eastern...
Ngày tải lên : 07/08/2014, 04:20
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Báo cáo lâm nghiệp: "Characteristics of coarse woody debris in successional stages of natural beech (Fagus orientalis) forests of Northern Iran" ppsx

Báo cáo lâm nghiệp: "Characteristics of coarse woody debris in successional stages of natural beech (Fagus orientalis) forests of Northern Iran" ppsx

... length. Statistical analysis To determine whether the volume of CWD of dif- ferent types, decay classes and size classes differed among these three successional forests, successional stage was considered ... (m 3 .ha –1 ) Log Snag Stumps Fig. 3. e volume of CWD in each decay class along a suc- cessional chronosequence in Northern forests of Iran Late-successional stage Mid-s...
Ngày tải lên : 07/08/2014, 10:21
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Báo cáo lâm nghiệp: "Predicting balsam fir growth reduction caused by spruce budworm using large-scale historical records of defoliation" potx

Báo cáo lâm nghiệp: "Predicting balsam fir growth reduction caused by spruce budworm using large-scale historical records of defoliation" potx

... METHODS 2.1. Sampled stands The stands sampled for this study were selected from a network of permanent sample plots (PSPs) established by the Ministère des Res- sources naturelles et de la faune ... PSP selection was based on several criteria. First, a stand composition cri- terion was applied to limit the scope of this study to balsam fir stands, which were defined as stands composed o...
Ngày tải lên : 08/08/2014, 00:21
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Báo cáo lâm nghiệp: "Using past growth to improve individual-tree diameter growth models for uneven-aged mixtures of Pinus sylvestris L. and Pinus nigra Arn. in Catalonia, north-east Spain" doc

Báo cáo lâm nghiệp: "Using past growth to improve individual-tree diameter growth models for uneven-aged mixtures of Pinus sylvestris L. and Pinus nigra Arn. in Catalonia, north-east Spain" doc

... stands) of the studied species in the stands should be at least 90%. Most of the stands were naturally regenerated. The sample plots were estab- lished in 1989 and 1990. The plots were remeasured ... relative biases, and the root mean square error (RMSE) were calculated as follows: ( 7) ( 8) ( 9) (1 0) where n is the number of observations, and and are observed and...
Ngày tải lên : 08/08/2014, 01:21
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Báo cáo lâm nghiệp: " Humus conditions and stand characteristics of artificially established young stands in the process of the transformation of spruce monocultures" pdf

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

... * (NS) X * ( *) NS (NS) Larch with beech NS (NS) * ( *) X * ( *) Beech stand * (NS) NS (NS) * ( *) X pH (H 2 O), (pH KCl) in forest floor (horizons L + F + H) Spruce X ** (NS) NS (NS) ** (NS) Spruce ... beech ** (NS) X NS (NS) NS (NS) Larch with beech NS (NS) NS (NS) X NS (NS) Beech ** (* *) NS (NS) NS (NS) X *Statistically significant differences (α < 0.0 5), **high stati...
Ngày tải lên : 07/08/2014, 03:22
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Báo cáo lâm nghiệp: "Assessment of some forest characteristics employing ikonos satellite data" docx

Báo cáo lâm nghiệp: "Assessment of some forest characteristics employing ikonos satellite data" docx

... misclassified, 45 as spruce and 22 as rowan. For the class soil destruction (e 1 = 0.4 9) 49% pixels was misclassified as stony debris. e most commit- ted classes were rowan (e 2 = 0.6 4), soil destruction ... confu- sion matrix would be zero, indicating no misclassi- fication. From the matrix also classification errors of omission and commission as well as KHAT statistic for si...
Ngày tải lên : 07/08/2014, 03:22
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Báo cáo lâm nghiệp: "Comparison of general tree characteristics of less known oak species Quercus dalechampii Ten. and Quercus polycarpa Schur" pot

Báo cáo lâm nghiệp: "Comparison of general tree characteristics of less known oak species Quercus dalechampii Ten. and Quercus polycarpa Schur" pot

... part of research could be carried out on lying trees. e forest stands were coppice converted into high stands on gentle slopes of south western aspect. e parent rock of the sites consisted of ... rot and classified as attacked. Collected data were processed with statistical soft- ware Statistica 6.0. Means and standard deviations were calculated for each characteristic withi...
Ngày tải lên : 07/08/2014, 03:22
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Báo cáo lâm nghiệp: "reproductive and morphometric characteristics of wild boar (Sus scrofa) in the Czech republic" pot

Báo cáo lâm nghiệp: "reproductive and morphometric characteristics of wild boar (Sus scrofa) in the Czech republic" pot

... 200 7). In those studies, similar age classes were chosen. In other studies, individuals are classified accord- ing to broad age scales, mostly in the categories of piglet (0–12 months), sub-adult ... (Kol- mogorov-Smirnov and Lilliefors test for normality) and for homogeneity of variances (Cochran s, Hart- ley s and Barlett s tests) were performed. Tukey s test was used to...
Ngày tải lên : 07/08/2014, 10:21
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Báo cáo lâm nghiệp: " Dynamics of tree species composition and characteristics of available space utilization in the natural forest of the National Nature Reserve Hrončokovský Grúň" pot

Báo cáo lâm nghiệp: " Dynamics of tree species composition and characteristics of available space utilization in the natural forest of the National Nature Reserve Hrončokovský Grúň" pot

... classes Pcs/ha Fagus sylvatica Abies alba Fraxinus excelsior Acer seudoplatanus PRP 2 (pcs/ha) Fagus sylvatica Abies alba Fraxinus excelsior Acer pseudoplatanus 500 J. FOR. SCI., 54, 2008 (1 1): ... volume of the assimilatory apparatus – tree crown. To assess the growing processes of individual tree species in the primeval forest, an analysis of relationships between crown volume...
Ngày tải lên : 07/08/2014, 10:22
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Báo cáo lâm nghiệp: "Modelling of the shape of red heartwood in beech trees (Fagus sylvatica L.) based on external tree characteristics" potx

Báo cáo lâm nghiệp: "Modelling of the shape of red heartwood in beech trees (Fagus sylvatica L.) based on external tree characteristics" potx

... lower ends of the moustache (Fig. 2) of this branch was measured after felling. On the inter-disc sections (logs), the seal length (ls), seal width (ws) and moustache length (lm )of branch scars were ... analysis software Visilog 5.3 (NOESIS, Les Ulis, France). In the case of forks (5 out of 16 trees) and for a given tree height, the discs of both stems were measured and t...
Ngày tải lên : 07/08/2014, 16:20
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