Báo cáo lâm nghiệp: "Effect of soil temperature upon the roo

Báo cáo lâm nghiệp: "Effect of soil temperature upon the root growth and mycorrhizal formation of white spruce (Picea glauca (Moench) Voss) seedlings grown in controlled environments" doc

... large pro- Effect of soil temperature upon the root growth and mycorrhizal formation of white spruce (Picea glauca (Moench) Voss) seedlings grown in controlled environments L. ... and root morphology of white spruce seedlings were examined in a controlled environ- ment. A companion study evaluated effects of root...

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp:" Effects of competing vegetation on juvenile white spruce (Picea glauca (Moench) Voss) growth in Alaska" pdf

... plant- ing and at the end of each of the first 5 growing seasons. Bonanza Creek seedlings were also measured at the end of the sixth, ninth, and eleventh growing seasons, and Fort Richardson seedlings ... increase sus- ceptibility of seedlings to fall freezing injury. Height and diameter of white spruce were increased by decreasing competing vegetation. In...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: "doubling atmospheric CO concentration on 2 matter distribution and CO exchange of 2 yr growth, dry 2 old sweet chestnut trees (Castanea sativa Mill.)" pptx

... After the end of July, 62% of the enriched plants ceased growth as compared with 37% of the controls. The early onset of yellowing and the stopped terminal bud growth indicates earlier ... senescence of the C0 2 -enriched plants. The final leaf area per plant, at the end of the growth period, was reduced by C0 2 enrichment....

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo khoa học: "Site-specific height curves for white spruce (Picea glauca [Moench] Voss) stands based on stem analysis and site classification" potx

... pine and interior spruce site index in the sub-boreal spruce zone. Res Note. BC Min For, Victoria, BC, 26 p West PW (1990) Thinning response and growth mod- elling. In: The ... predicted. Given the fact that site productivity is a result of the integrated effects of many envi- ronmental factors and given the potential for organizing...

Ngày tải lên : 08/08/2014, 19:21

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Báo cáo lâm nghiệp: "Effect of plant age, temperature and rainfall on Lepidoptera insect pests collected with light traps in a Eucalyptus grandis plantation in Brazil" docx

... Mean temperature (ºC) and rainfall (mm) (A) and total number of individuals of Lepidoptera (B) and of major (C) and lesser (D) important pests collected in a Eucalyptus grandis plantation in the Municipality ... comparing them to individuals of the Museum of Entomology of the UFV and of other centres of insect identification in Brazil. Frequency index (...

Ngày tải lên : 08/08/2014, 00:21

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Báo cáo lâm nghiệp: " Effect of the root temperature on growth parameters of various European tree species" ppsx

... Effects of root temperature on growth and photosynthesis in conifer seedlings during shoot elongation. Tree Phys- iol 10, 217-230 Short note Effect of the root temperature on growth ... nutrition. Chilling of the root system in P sylvesfris resulted in a decrease of the level of IAA and an increase of ABA (Menjailo et al,...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Effect of simulated acid rain on mycorrhizae of Aleppo pine (Pinus halepensis Miller) in calcareous soil" potx

... seedlings were harvested and root biomass and the percentage of mycorrhizae were determined, both in old and new roots. Moreover, root length and the number of short roots ... germination, when the formation of secondary roots was noted, and lasted 33 weeks. Seedlings received a total of 231 mL of simulated rain during the...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Effect of stand segmentation on growth and development of Norway spruce stands" pps

... for trees growing in the ﬁrst row (next to the track) in comparison with the group of trees from the second and the third row (11.1 and 8.8 m). On the other hand, the h/d ratio and height were ... perpendicularly to the direction of prevailing winds, in contradiction to plot 3 where the skid- ding track follows the direction of prevailing winds. – S...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Effect of gibberellic acid and ethephon on the germination of European beech dormant and chilled beechnuts" pptx

... with the moist peat-sand substrate and incu- bated as described above (control). In treatments 6 to 9 the mc of beechnuts was increased by sprinkling them with tap water to ob- tain the target ... increases the production of xylanase forming channels through the walls of the aleuron cells of seed, supporting the release of α-amylase, an en- zyme that stimulat...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Effect of climatic factors on the dynamics of radial increments of Norway spruce, European beech and sessile oak" potx

... results in an increase in increment index of spruce almost by 0.13%. This index in oak and beech increases only by a half value of the value for spruce. Precipitation from the second half of the ... also the intensity of the eﬀect of signiﬁcant climatic factors on the increment of trees of the studied tree species. Figs. 5 and 6 illustrate changes...

Ngày tải lên : 07/08/2014, 10:21

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