Báo cáo lâm nghiệp: " The influence of different overstory r

Báo cáo lâm nghiệp: " The influence of different overstory removal on planted spruce and several broadleaved tree species: Survival, growth and pine weevil damage during three years" pps

... 10.1051/forest:2005015 Original article The influence of different overstory removal on planted spruce and several broadleaved tree species: Survival, growth and pine weevil damage during three years Magnus LÖF a *, ... herbivory from Pine weevils on early growth and survival in different tree species. Sec- ondly, to compare the long-...

Ngày tải lên : 08/08/2014, 00:21

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Báo cáo lâm nghiệp: "The influence of irradiation on the behaviour and reproduction success of eight toothed bark beetle Ips typographus (Coleoptera: Scolytidae)" doc

... however. We can conclude the doses of 15 and 30 Gy do not have a significantly negative effect on the behaviour of ir- radiated males in the preparation of entry holes and the creation of mating chambers. ... the conditions of a long day (15 hours). Estimation of the effect of sub-sterilizing doses on F1 generation was done indirectly, by: (A) evaluation of...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "The influence of selected factors on energy requirements for plain milling of beech wood" ppsx

... state that the issue of plain milling of beech wood is very complex and in the context of the results of the above-mentioned experiments it is inevitable to further extend the knowledge of investigated ... input. MATERIAL AND METHODS The main aim of the verification experimental investigation was to study, on the basis of measure- ments of beech speci...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: " The influence of Picea abies on herb vegetation in forest plant communities of the Veporské vrchy Mts" ppt

... diagnostic species and they play a key role in characterization and diﬀerentiation of the vegetation units. In this case they provide the comparison of units within the proportion of spruce. Bryophytes, ... species and the proportion of spruce. For this pur- pose, the direct ordinance unimodal method CCA (Canonical Correspondence Analysis) was used with the pr...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp:"The influence of microclimate and tree age on the defense capacity of European beech (Fagus sylvatica L. ) against oxidative stress" pps

... any tree age dependent differences in the composition of the biochemical parameters investigated, neither in the sun nor in the shade crown. By contrast, in the sun crown the leaf-area based concentrations ... despite the economic importance of Fagus sylvatica only a few studies focused on seasonal and spatial changes of antioxidants and pigments [11, 12, 19, 29, 3...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: " The influence of drought and thinning on leaf area index estimates from canopy transmittance method" pdf

... (lower number of of these adaptations concerns especially those regions where these environmental constraints are severe for a long time during the year, such as the Mediterranean ... advantages and limits of the use of this method in estimating LAI and to determine whether the modifications due to silvicultural operations and to diffe...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "The influence of acid mist upon transpiration, shoot water potential and pressure—volume curves of red spruce seedlings" pot

... expected to influence plant water status. This paper presents some of the results of a detailed study of the influence of acid mist on the water relations of red spruce seedlings. Materials ... contradiction to those of several investigators who noted a signifi- cant effect of acid rain/mist upon cuticle structure and/ or resistance....

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp: "The proposal of biotic hazard zones in selected spruce dominated regions in Slovakia" pptx

... the zone average width is 5 km. It covers 14% of the total area of the region and 15% of spruce stands. e background zone C covers 83% of the total area of the region and 80% of spruce stands. ... e areas of biotic hazard zones and spruce stand proportions within the zones in the Kysuce region Zone Zone area (ha) Proportion in total area of the r...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo y học: "The Influence of Hyperbaric Oxygen Treatment on the Healing of Experimental Defects Filled with Different Bone Graft Substitutes"

... Electron microscopy observations In the ultrastructural evaluation of the perios- teum in one and two week specimens in the control groups without HBOT, there were numerous chon- droblasts and ... resorption pattern when compared to the β-TCP. Al- so, at four weeks, the healing of these defects was similar to that of the control group. On the other hand, our ul...

Ngày tải lên : 25/10/2012, 11:15

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Báo cáo lâm nghiệp: "The results of manipulated experiments with inoculation of Ips typographus (L., 1758) to spruce trees under various levels" potx

... amount of precipitation in July was low and the eﬀect of this fact we observed via continual dry- ing the trees in that time (with exception of several days in the mid of July when precipitation ... Large area of such stands along with compound of biotic and abiotic stressors (air pollu- tion, degradation and compaction of soil, nutrients exhaustion, increased...

Ngày tải lên : 07/08/2014, 03:22

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