Báo cáo lâm nghiệp: "Experimental research in ageing holm oa

Báo cáo lâm nghiệp: "Experimental research in ageing holm oak (Quercus ilex L.) coppices: preliminary results" ppsx

... for individual holm oak were devel- oped in Spain [6, 7] and in Italy [4, 5]. A

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp: "Experimental control in Weigela japonica of flower initiatiob" ppt

... that the control of flowering is at least partially located within the bud. This control could be related to morphological or biochemical properties of certain com- ponents ... organogenetic activity is presently under investigation to detect and localize within the bud the histological modifications specifically involved in the floral transition. .....

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp: "Species composition in low mountain beech (Fagus sylvatica L.) stands in the Bieszczady National Park under the global warming" doc

... global warming resulting from the increase in the volume of carbon dioxide in the atmosphere, particularly over the last decades (F, J 199 6). Following the climate analysis ... count and 9.5% in stand volumes) and sycamore (3.8% and 3.5% respectively). Other species’ total share (spruce, goat willow, aspen poplar, mountain ash, hazel, mountain elm, ash) is l...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Seasonal variations in photosynthetic activity of spruces as determined by chlorophyll fluorescence" ppsx

... (,’3uppl 1), S29-S85 Lichtenthaler H.K. & Rinderle U. (1988b) Chloro- phyll fluorescence as vitality indicator in forest decline research. In: Applications of Chloro- phyll Fluorescenc!a. ... Lichtenthaler, 198 8). The registration of the different chlorophyll fluorescence parameters (Lichtenthaler, 1987; Lichtenthaler et al., 1986; Lichtenthaler...

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp: "Experimental weathering of mica by mycorrhizal and non-mycorrhizal beech and pine" ppsx

... Vand&oelig;uvre-/ès- Nancy, France Introduction Ectomycorrhizal fungi are able in pure cul- ture to release organic acids and to solubi- lize insoluble minerals, such as insoluble phosphates ... pine (Pinus sylvestris L. ) and beech (Fagus silvatica L. ) rhizospheres. Materials and Methods Six month old pine and beech seedlings were grown on...

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp: "Parental participation in progeny and eﬀective population sizes in experimental seed orchards of wild cherry Prunus avium L. (Batsch)" docx

... proportion [19]. Finally, the eﬀec- tive sizes of fathers per mother that we measured in our study (neglecting pollen contamination) are close to the low values that are expected in animal-pollinated species: ... from an ideal situation in which all clones contribute equally to the seed crop. Equal contribution of each clone would mean that all females have the same seed yield and that...

Ngày tải lên : 07/08/2014, 16:21

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Báo cáo lâm nghiệp: "Exploring research issues in selected forest journals 1979–2008" ppsx

... less alarming levels (Hettelingh et al., 2005; online Appendix B1 available at www.afs-journal.org)and after the acid rain and forest dieback debate had receded in Europe and North America. In ... “stom- atal” in all journals in the “Forestry” subject category in WoS. A fading of physiology-related words in our corpus is there- fore likely to be induced less by a loss of topicalit...

Ngày tải lên : 07/08/2014, 16:21

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Báo cáo lâm nghiệp:"Wind-firmness in Pinus pinaster Aït. stands in Southwest France: influence of stand density, fertilisation and breeding in two experimental stands damaged during the 1999 storm" pdf

... possible to unveil clues that will help in understanding wind-firmness in Mari- time pine, a subject that has been dealt with little in this species Silviculture and wind damage in Maritime pine ... [21]. The level of leaning pines has been mainly correlated with crown length in the dominant storey. When it increases, the level of leaning pines decreases. This relation may be the tr...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: "Mineral nutrition in relation to the Norway spruce forest decline in the region Horný Spiš (Northern Slovakia)" docx

... with visible symptoms of yellow - ing needles in the soil substrate from the air-pol- lution plot Hliníky (10 seedlings); – Spruce seedlings with symptoms of yellowing needles in the soil substrate ... needles were signiﬁcantly correlated with chlorophyll concentrations in visibly yellowed needles (from declining trees with more than 40% needle loss and visible needle chlorosis)....

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its effects on cambioxylophagous fauna" docx

... the following scheme: – only in the last needle age class (I), – only in the last but one needle age class (II), – and in the last three needle age classes (I+II+III). e degree of the assimilatory ... defolia- tion was classiﬁed as: – only in the last needle age class (I), – only in the last and in the last but one needle age class (I+II), – in the last three needle age classe...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Experimental research in ageing holm oak (Quercus ilex L ) coppices: preliminary results" ppsx

Báo cáo lâm nghiệp: "Experimental research in ageing holm oak (Quercus ilex L.) coppices: preliminary results" ppsx

Báo cáo lâm nghiệp: "Experimental control in Weigela japonica of flower initiatiob" ppt