Báo cáo lâm nghiệp: "Estimation of the biomass stock of trees in Sweden: comparison of biomass equations and age-dependent biomass expansion factors" ppsx

... 6215648902. Contribution to the knowledge of Clethrionomys glareolus populations in forests of managed landscape in Southern Moravia (Czech Republic) J. S Faculty of Forestry and Wood Technology, ... found in southern Moravian forests as exerted by the bank vole gnawing the stems of young trees. In controlled forests 40% of young o...

Ngày tải lên: 07/08/2014, 03:22

... respect to damage to forest stands. In the present paper, the population dynamics of As is described in larger forest complexes of southern Moravia depending on the biotope and food supply including ... (Apodemus sylvaticus) . Journal of Zoology (London), 198: 83–102. SUCHOMEL J., 2007. Contribution to the knowledge of Clethrionomys glareolus populatio...

Ngày tải lên: 07/08/2014, 03:22

... stand composition) from each taxon used for the reforestation of the state of reclamation “A” and “B” Fig. 3. Fraxinus excelsior L. in the treatment with the application of CCB Fig. 4. Populus ... L. in the treatment with the application of CCB Fig. 5. Tilia cordata Mill. and Pinus nigra Arn. in the treatment with the application of CCB Fig. 6. Deform...

Ngày tải lên: 07/08/2014, 10:21

... spread in the Mediterranean basin. In Spain, few studies on the genetic variability of this species have been displayed. Storage seed proteins are a useful tool in the evaluation of the genetic ... 526–531 The aim of the present study was to evaluate cotyledon storage proteins as markers of the genetic diversity in sweet holm oak. MATERIAL AN...

Ngày tải lên: 07/08/2014, 10:22

... correlation between the aboveground parameters and the depth of root plates in spruce trees growing both in waterlogged and in well-drained sites. According to our results, it seems that the roots of ... 353 JOURNAL OF FOREST SCIENCE, 56, 2010 (8): 353–360 Relationships between the parameters of aboveground parts and the parameters of...

Ngày tải lên: 07/08/2014, 10:22

... Sciences, 2005 DOI: 10.1051/forest:2004085 Original article Sicily represents the Italian reservoir of chloroplast DNA diversity of Quercus ilex L. (Fagaceae) Silvia FINESCHI a *, Salvatore COZZOLINO b , ... occurs only in Sicily and particularly in the south-eastern part of the island, close to the Etna region. Haplotype 6 characterises the south-weste...

Ngày tải lên: 08/08/2014, 00:21

... original Estimation de l’accroissement et de la production forestière à l’aide de placettes permanentes concentriques Jacques HÉBERT, Nils BOURLAND, Jacques RONDEUX* Faculté universitaire des Sciences ... placettes circulaires uniques de rayon fixe (18 m) équivalentes à la plus grande des placettes concentriques. De cette manière, nous avons pu procéder...

Ngày tải lên: 08/08/2014, 00:21

... separating peripheral wood (PW), red heartwood (RH) and non red heartwood (NRH) points (mean for 342 boards). Colour variations of European beech wood 631 Figure 6 illustrates these variations of colour for L* only ... 10.1051/forest:2005063 Original article Studies on European beech (Fagus sylvatica L.). Part 1: Variations of wood colour paramet...

Ngày tải lên: 08/08/2014, 00:22

... pine. The uncertainty in the biomass estimates of birch was high, since the number of birch stands was low in both the material used for formulation of the BEFs, and in the Swedish data on which the ... Svealand and Götaland regions. In Svealand, the use of BEFs for Norway spruce in young stands resulted in lower, and in mature stands, higher bio...

Ngày tải lên: 08/08/2014, 00:22

... vegetation. The total stock, in tC, for the whole of Fougères forest was therefore the sum of the stocks in all the plots. Then the range of the total stock was calculated and the corresponding map ... the vegetation. From the statistical analyses and existing maps these point data were extrapolated to the whole forest using two changes of scal...

Ngày tải lên: 08/08/2014, 00:22

... 10.1051/forest:2003031 Original article Estimation of crown radii and crown projection area from stem size and tree position Rüdiger GROTE* Chair for Forest Yield Science, Department of Ecology and Landscape Management, ... determination of radius length and potential crown cover (pr1 and pr2: maximum radii, alin1 and blin1: linear radii estimation, al...

Ngày tải lên: 08/08/2014, 01:21

... have reported the X-ray wood density measurement and the wood density profiles cal- culated by the mean of the cell wall proportion obtained by image analysis of the sections. The cell wall proportion ... et al. and (ii) the cell wall proportion on its area or on a section withdrawn from it. The apparent density of the cell wall is then...

Ngày tải lên: 08/08/2014, 01:22

... 5) with a core of clones between 37 and 44 degrees Estimation of genetic parameters in the European black poplar (Populus nigra L.). Consequence on the breeding strategy Ch. ... discussion, need to be based on the genetic and economic properties of the species. The present study aims to estimate the genetic parameters i...

Ngày tải lên: 09/08/2014, 02:21

... is clear from the above results that sapwood area estimated on the basis of Original article Sapwood as the scaling parameter - defining according to xylem water content or ... Phloem water decreased to about 53 % vol . There was no change in the heart- wood water. Since no radial pattern of sap flow was measured in the experime...

Ngày tải lên: 09/08/2014, 04:20

... experiment on the effect of girdling and gibberellin application on flowering induction of 12 yr old seedlings of Douglas fir and Norway spruce M. Bonnet-Masimbert with the technical ... References Bonnet-Masimbert M. (1987) Preliminary results on gibberellin induction of flowering of seedlings and cuttings of Norway sp...

Ngày tải lên: 09/08/2014, 04:20