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Báo cáo lâm nghiệp: "in pathways for carbon and nitrogen assimilation in spruce roots under mycorrhization" doc

Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "in pathways for carbon and nitrogen assimilation in spruce roots under mycorrhization" doc

... Changes in pathways for carbon and nitrogen assimilation in spruce roots under mycorrhizationC. Namysl1F. Le TacorM. Chalot1B. ... carbon for amino acid biosyn-thesis. Some enzyme markers associatedwith the pathways of nitrogen and carbon metabolism were examined in spruce ectomycorrhizae and in each ... partner(uninfected root and fungus) to detect thechanges occurring during symbiosis.Materials and MethodsThe fungus (Hebeloma sp.) was grown in Pachlewski’s medium. Spruce roots...
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Báo cáo lâm nghiệp: "Moisture effect on carbon and nitrogen mineralization in topsoil of Changbai Mountain, Northeast China" pptx

... Soil carbon mineralization potential and its effect on soil active organic carbon in evergreen broadleaved forest and Chinese fir plantation. Chinese Journal of Ecology, 26: 1918–1923. (in Chinese)W ... Mountain. Research of Forest Ecosystem, 4: 127–138. (in Chinese)Z C.P., O H. (2001): In uence of temperature and moisture on soil nitrogen mineralization under two types of forest in ... between nitrogen mineralization and grazing intensities in an Inner Mongolian typical steppe. Plant and Soil, 300: 289–300.Y X., X M. (2003): Biodiversity conservation in Chang-bai Mountain...
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Báo cáo lâm nghiệp: "Management criteria for Ficus insipida Willd. (Moraceae) in Amazonian white-water floodplain forests defined by tree-ring analysis" pptx

... scientific data increas-ing the sustainability of the participative forest management in the MSDR leading to higher incomes and benefits for the localpopulations and maintaining the forest’s multiple ... Assessing the growth of tropical rain foresttrees: Issues for forest modelling and management, Ecol. Appl. 9(1999) 981–997.[7] Curtis J.T., McIntosh R.P., An upland forest continuum in theprairie-forest ... pasture, and their exploitation by an expanding timber and plywood industry [12,35]. Because of low energy costs for logging, skidding, and transport during the flooded period [4]between 60% and 90%...
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Báo cáo lâm nghiệp: "A method for describing and modelling of within-ring wood density distribution in clones of three coniferous species" ppt

... expectedchange in distribution of within-ring density for one sd increase in ring width is presented in Figure 3. 3.4. Differences among clones in within-ring density Fluctuations in growth rate and ... given in bold.λ1λ2λ3λ4759Ann. For. Sci. 61 (2004) 759–769© INRA, EDP Sciences, 2005DOI: 10.1051/forest:2004072Original articleA method for describing and modelling of within-ring ... within subject factors (i.e. year and clone by yearinteraction) [21, p. 434]. Clone variability for within-ring parameters was also examinedafter adjustments for ring width and mean ring density...
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Báo cáo lâm nghiệp: "Analysis of snow accumulation and snow melting in a young mountain spruce and beech stand in the Orlické hory Mts., Czech Republic" pptx

... like in March, also in April practically all water from melting snow in ltrated to the underly-ing rock. Only 16 mm water in spruce and 17 mm in beech flowed out in the form of overland flow in ... to 67.5 cm in spruce, to 46.8 cm in beech and the snow water equivalent in the spruce stand was reduced to 275.1 mm and in the beech stand to 228.3 mm. In line with the presented and approved ... either in snow depth or in snow water equivalent in the spruce and beech stands. e rate of snow melting in the spruce and beech stands was never higher than 50 mm per day. If the spring final...
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Báo cáo lâm nghiệp: "Evaluation of squared timber and log products in the Hyrcanian Forests of Iran" doc

... divided into two categories: non- mechanized and mechanized logging systems. In non-mechanized logging systems, after cutting, felling and delimb-ing, the logs are cut using manual chainsaws into ... forestMazandar forestsGilan forests1015202530354045Golestan ForestsMazandaran ForestsGilan forests051015202530354045Golestan ForestsMazandaran ForestsGilan forests(b)1989 ... volume of 76,959 m3 was produced in Golesan forests in 1991, in Ma-zandaran forests it was 139,217 m3 in 1990 and in Gilan forests it was 29,360 m3 in 2002.  is table also shows that...
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Báo cáo lâm nghiệp: "Influence of flooding on growth, nitrogen availability in soil, and nitrate reduction of young oak seedlings (Quercus robur L.)" docx

... availability in the soil.During flooding, amino acid contents in taproot of stressedseedlings remained high and similar to that of controls. Thisresult indicated that flooded roots maintained amino ... Flooding stress in Quercus robur seedlings 599Quercus seedlings grown on sand showed maintained nitratereductase activity in roots and leaves in flooded and controlplants [34]. ... underlined the involve-ment of cytokinin in bud break initiation of Quercus rubraseedlings. Initiation of new roots in stressed seedlings began26 days after flooding exposure, length and biomass...
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Báo cáo lâm nghiệp:"Analysis of log shape and internal knots in twenty Maritime pine (Pinus pinaster Ait.) stems based on visual scanning and computer aided reconstruction" pptx

... published for Pinuspinaster Ait. Further studies and an increased sampling willallow the gathering of more comprehensive information to beused as a tool for optimising the industrial processing, ... measurements and stand structuralinformation, Can. J. For. Res. 28 (1998) 1686–1696.[15] Mäkinen H., Colin F., Predicting the number, death, and self-pruning of branches in Scots pine, Can. J. For. ... management oriented for high added valuetimber products, including 5 years rotation thinnings between20 and 40 years of tree age, pruning before the first thinning and clear cutting at an approximate...
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Báo cáo lâm nghiệp:" Needle longevity, shoot growth and branching frequency in relation to site fertility and within-canopy light conditions in Pinus sylvestris" potx

... biomassinvestment in branches in low light. However, in our study,there was an increase in the fractional investment in needleswith increasing Qint in the fertile site, and no effect of Qint in the ... growth, and branching frequency in response to seasonal averageintegrated quantum flux density (Qint) were investigated in Pinus sylvestris L. in a fertile site (old-field) and an infertile ... Berlin, 1987, pp. 180–202.[43] Linder S., Foliar analysis for detecting and correcting nutrientimbalances in Norway spruce, Ecological Bulletins 44 (1995)178–190.[44] Mailly D., Kimmins J.P.,...
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Báo cáo lâm nghiệp: "Influence of individual tree and stand attributes in stem straightness in Pinus pinaster Ait. stands" pps

... distribution and it is often used in reforestation. Twenty provenance regions of P. pinaster havebeen defined in Spain [4]. Pinus pinaster shows a general ten-dency for sinuosity in comparison ... straightness and site, and both individual and stand attributes were studied in Pinuspinaster Ait. stands. To this effect, 32 plots encompassing different densities and sites of varying quality ... greater in the high-density plots(Fig. 4). In a study with saplings of Pinus virginiana Fenton(1959, in [44]) found also more damage in dense stand and in larger saplings (6–15 years old) than in...
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