Báo cáo lâm nghiệp: "Morphological and functional variability in the root system of Quercus ilex L subject to confinement: consequences for afforestation" ppt

... a); and sum of links in all possible unique paths from the base link to all exterior links (or total exterior path length, p e ). The following topological Root system morphological and functional ... container seedlings are used for planting, the con- tainer characteristics affect the plantlet root system. For ex- ample, ribs or slits on the cell inner walls p...

Ngày tải lên: 08/08/2014, 00:22

... that the high level of pollen flow could in uence variability within populations and contribute to decrease the inter-population variability. There are others factors that could affect the high levels of ... et al. [6]) was calculated. This is the probability that an individual will be in- formative of the respect to the segregation of its inherited alleles. In...

Ngày tải lên: 07/08/2014, 16:21

... aucuparia L. ) is classified into the group of other deciduous tree species according to the methodology of forest inventory Table 5. Total damage to individuals in regeneration by game Species Totally ... negundo L. , others Ash Fraxinus excelsior L. , Fraxinus angustifolia Vahl., Fraxinus americana L. Elm Ulmus minor Mill., Ulmus glabra Hudson, Ulmus laevis Pallas Locust...

Ngày tải lên: 07/08/2014, 03:22

... (tree biomass, litter layer and total mineral soil). The high number of larger trees in stand 1 led to a substantial increase in the C stock in the system. The average C accumulation in above- ground ... diameter classes for the four Quercus robur stands studied. height (d) was the only independent variable included in the allometric model. Addition of sta...

Ngày tải lên: 07/08/2014, 16:20

... Scots pine forest (Pinus sylvestris L. ) in the south- ern upper Rhine plain, Meteorol. Z. 14 (2005) 143–150. [36] Wilson J., Vulnerability to wind damage in managed landscapes of the coastal Pacific ... tree-ring parameters indicating differences in drought stress of Pinus sylvestris forests within the Erico-Pinion in the Valais (Switzerland), Plant Ecol. 163 (2002) 105–...

Ngày tải lên: 07/08/2014, 16:20

... site) will increase heartwood. The silvicultural management of E. globulus plan- tations used for pulping should take into account the presence of heartwood in the trees and the factors of its ... corresponding to the different height levels, using formulas for a cylinder for section 0%–5%, truncated cone for all intermediate sec- tions (5%–15% to 65%–90%) and...

Ngày tải lên: 07/08/2014, 16:21

... using likelihood ratios (LOD-scores). To classify pairs of individuals by relatedness (full-sibs, half-sibs and unrelated), LOD- scores were calculated following the formulas of Brenner [8]. For each ... Needle samples from all mature maritime pine trees within a circular plot of 50 m in radius (n = 76), and all seedlings and saplings taller than 20 cm within a central sub...

Ngày tải lên: 08/08/2014, 01:21

... underlying internodes In contrast to the apices, in young and mature leaves as well as in the underlying internodes, SuSy accumulated preferen- tially in the vascular tissues of the phloem and in ... also localized specifically in the companion cells in maize leaves [17] and in castor bean [27]. This localization in common oak leads also to suggest an i...

Ngày tải lên: 08/08/2014, 00:22

... result of the PAS reac- tion, not only starch grains, but also cellulose cell walls and tannin vacuoles in pith cells were stained. (2) 3% glutaraldehyde and 2% paraformaldehyde with CaCl 2 in 0.1 ... Apical initials [Fig. 1(2)] Outer tangential walls of apical cells were thicker than anti- clinal walls and inner tangential walls. The surface of outer tangential walls was...

Ngày tải lên: 08/08/2014, 01:21

... assesment Results of applying model 3S are presented in Table II and Figure 4c. The model was applied on all data, and for the stand with missing information on thinning b* thinning was considered equal to ... pine in the tem- perate climate zone. For a better prediction, stand age, and also thinning intensity and time since last thinning can be added to the mod...

Ngày tải lên: 08/08/2014, 01:22