Báo cáo lâm nghiệp: " The effects of cutting regimes on natu

Báo cáo lâm nghiệp: " The effects of cutting regimes on natural regeneration in submountain beech forests: species diversity and abundance" pdf

... stability as an intrinsic quality of forest e eﬀects of cutting regimes on natural regeneration in submountain beech forests: species diversity and abundance M. B Institute of Forest Ecology, ... this in uence was found positive on plot M only. Fig. 5 illustrates the in uence of cutting on changes in the species composition of natural...

Ngày tải lên : 07/08/2014, 10:22

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Báo cáo lâm nghiệp: "The effects of transplanting stress on photosynthesis, stomatal conductance and leaf water potential in Cedrus atlantica Manetti seedlings: role of root regeneration" pdf

... relative humidity and in darkness, and then planted again in similar bags. The other half (control plants) were maintained in the initial bags. The carbon dioxide <assimilation rate ... India Introduction Artificial forest stand establishment may be achieved either with container-grown seedlings or with bareroot planting stock. Since growing...

Ngày tải lên : 09/08/2014, 04:20

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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, ... persistence of beech dominated forest species and on the other Canopy Light PROPORTION OF SPRUCE Continentality Cover of herbs Temperature Number...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "The effects of flooding and Phytophthora alni infection on black alder" pps

... DISCUSSION Confirmation of flooding and P. alni infection effects on black alder e analysis of covariance confirmed that the both factors (flooding and P. alni infection) and their combination significantly ... observation of J and B (2004). Differences among treatments in detail When the development of P. alni infection in the flooded and non-flooded condi...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "The effects of thinning on the structural diversity of coppice forests" doc

... Montes et al. increases the illumination on the stems and in the case of Q. faginea this produces an intense sprouting from the stem, instead of the reoccupation of openings through the horizontal expansion ... during the dry season. Due to the existence of these problems in exten- sive areas and to the increasing interest in the implementation of dir...

Ngày tải lên : 08/08/2014, 01:22

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Báo cáo lâm nghiệp: "The effects of lifting on mobilisation and new assimilation of C and N during regrowth of transplanted Corsican pine seedlings. A dual 13C and 15N labelling approach" docx

... seedling; () intact seedling. The different sampling dates were: at transplanting (day 0), at the beginning of root regeneration (day 13), and on days 27 and 41. The significance of the effects of ... concentration neither in seedlings nor in their components. Time or lifting effects on C:N in the different seedling components were inversely related to tho...

Ngày tải lên : 08/08/2014, 01:22

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Báo cáo lâm nghiệp: "The effects of elevated CO 2 and water stress on whole plant CO 2 exchange, carbon allocation and osmoregulation in oak seedlings" docx

... in the chamber after the cessation of CO 2 injection until the CO 2 com- pensation point was reached. The incorporation of 13 C into individual plant parts was determined 12 ... concentrations. However, elevated CO 2 concentrations often lead to reduced total mineral ion concentrations in the plant tissues (Conroy, 1992; Overdieck, 1993). T...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "The effects of stock type and radicle pruning on blue oak morphology and field performance" docx

... including directly sown acorns, 4-month-old seedlings and 1-year- old seedlings. This project also examined the effects of trimming the radicles of ger- minated acorns on ... Protection Nurs- ery at Davis, CA, for planting into containers, while the third was directly sown in the field during the following week. The radicle pruning...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "The effects of summer exposure to ozone on the frost hardiness after the vegetation period of Norway and Sitka spruce seedlings" doc

... concentration of ozone using the same fumigation system. In this case, although there was no effect of the pollu- tant on the attainment of deep winter hardiness, the ... assumed dead). The shoots + vials were then autoclaved and the total conductivity (C-) of the solution determined. Based on the assumption that the rate of...

Ngày tải lên : 09/08/2014, 04:20

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

... the measurements aimed at the investigation of the in uence of the above-mentioned factors on cutting input. Machinery and tool Experiments were realized on a single-spindle drilling machine ... geometry of a milling machine in the process of plain milling. Another goal of the experiment was the determi- nation of bulk density of individual beech as...

Ngày tải lên : 07/08/2014, 03:22

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