Báo cáo lâm nghiệp: "Growth, allocation and leaf gas exchanges of hybrid poplar plants in their establishment phase on previously forested sites: eﬀect of diﬀerent vegetation" docx

... 10.1051/forest:2007005Original articleGrowth, allocation and leaf gas exchanges of hybrid poplar plants in their establishment phase on previously forested sites: effect of different vegetation management ... biomass allocation and leaf carbon assimilation was investigated in two plantations(1- and 2-year-old) established in previously forested sites of south-eastern Québec. Any vegetation control ... 2006)Abstract – The effect of different vegetation control methods (mowing and cultivation between plantation rows, herbicide application and cover plantsowing) on hybrid poplar (P. maximowiczii...

Báo cáo lâm nghiệp: " Crown architecture and leaf habit are associated with intrinsically diﬀerent light-harvesting eﬃciencies in Quercus seedlings from contrasting environments" ppt

... reduction in the mean area of individualleaves resulted in a non-linear increase in the total number of leaves of the plant (Fig. 2). This combination of decreasing leaf size and increasing number ... coordinates of the leaf margins. Leaf size was then scaled in the crown reconstruction fromthe measured leaf length. Curved leaves were reconstructed by addi-tion of successive leaf sections of ... selection and storage were done following standard procedures [5, 16, 24].Sowing was done during the ﬁrst week of March of 2000 in cylin-drical 1 L pots, which were built using PVC pipe sections...

Báo cáo lâm nghiệp: "Stand biometry and leaf area distribution in an old olive grove at Andria, southern Italy" pptx

... area index (PAI, including leaf and skeleton indexes) by conventional gap fraction analy-sis of hemispherical photography and reported values of 34 and 63% of that determined destructively in ... distribution (A) and relationship between height and trunk circumference (B) in an olive grove in Andria 2002.3.3. Leaf distribution on the level of individual treesA calibration ratio of black and ... related to leaf illumination, radial distri-bution can help with interpretation of remote sensing images,interception of water and eventually root distribution, frontaldistribution is a background...

Báo cáo lâm nghiệp:"Growth, damage and net nitrogen uptake in Picea abies (L.) Karst. seedlings, effects of site preparation and fertilisation" pptx

... serious damage in the experiment.There was great damage in the winter between the first and thesecond growing seasons. Protection of the seedlings during thesecond and third growing seasons was efficient ... treatments.Nitrogen concentrations in soil water were higher in CDSCthan in FVC and C in the late autumn of 1999 and lower in thespring of 1999 (Fig. 3). N concentrations were higher forCDSC than for FVC and ... p.[41] Thiffault N., Jobidon R., Munson A.D., Performance and physiology of large containerized and bare-root spruce seedlings in relation toscarification and competition in Québec (Canada), Ann....

Báo cáo lâm nghiệp: "The above- and belowground carbon pools of two mixed deciduous forest stands located in East-Flanders (Belgium)" pot

... [27].The contribution of the living (47.4% in the oak-beech and 46.0% in the ash stand) and the non-living compart-ment (52.6% and 54.0%), are very similar in both stands.As such, one can conclude ... stand, resulting in a moreequally distribution of the organic material in this standthan in the oak-beech stand.It seems that in both stands, large amounts of carbonare stored in the mineral ... and the ashstand have important carbon stocks. The total amount of carbon stored (resp. 324.8 tons C ha–1 and 321.6 tonsCha–1) and the distribution between living and non-Carbon pools in...

Báo cáo lâm nghiệp: "Gibberellin A enhances flowering 4/7 of Picea glauca grafts in two consecutive years" pdf

... I).Interactions were due to a change in magnitude of response, rather than to achange in rank of the treatment combina-tions. Clone x treatment interactions forstaminate ... length of 217 mm, while the treat-ed branches were 163 mm long.Treated branches on EF and LF clonesresponded with significant increases in flowering in 1983 and 1984 ... overcome clonalvariation in female flowering. However,unequal representation of clones as pollenparents, as exemplified by the strongclone x treatment interaction, might...

Báo cáo lâm nghiệp: "Growth and physiological state of beech seedlings grown in a nursery in diﬀerent light conditions" docx

... Further evaluation of the survival and growth of seedlings grown in the sun and in the shade after their outplanting to diﬀ erent conditions will show to what extent the need of adaptation to diﬀ ... determine the reaction of seedlings grown in a plastic greenhouse to a sudden change in light conditions (e.g. after outplanting) a part of trays (56 plants) with seedlings from sunny conditions ... shade and in control seedlings growing in the gap.Photoinhibition in beech seedlings grown in the shade and transferred to full light caused a re-duction in the photosynthetic electron transport...

Báo cáo lâm nghiệp: "Growth versus storage: responses of Mediterranean oak seedlings to changes in nutrient and water availabilities." ppsx

... toexplain changes in carbon and nitrogen allocation to diﬀerent plant functions in response to variations of the inner carbon-nutrient balance (CNB hypothesis). This hypothesis relies on the ... concentrations of St at the beginning of autumn [2],coinciding with the date of harvest in our study, while ever-greens do so at the end of winter, just before bud break [14]. In the case of ... survive long stress periods or to recover from dis-turbances, which rely on stored carbon [4,10].4.2. Eﬀects of wateringIrrigation induced contrasting growth and accumulation re-sponses among...

Báo cáo lâm nghiệp: "Modelling height and diameter growth of dominant cork oak trees in Spain" ppt

... G.,Defining the concept of sustainability and a demonstration of prac-tical application of sustainable forest management based on theSUFOR experience, Proceedings of the IUFRO Conference on Decision ... Sánchez-González et al.scarce natural regeneration, ageing of cork oak stands, loss of cork quality [41], intense pruning [8] and increased cork oakdecline (“seca”) [27].Cork oak stands in Spain ... surface of Spanish cork oak stands) and produce 48 000 t of cork, whichcorresponds to 54% of the Spanish cork production [27, 41].Cork oak forests are mainly found in Catalonia and the south of Andalusia....

Báo cáo lâm nghiệp: "Growth trends reveal the forest structure during Roman and Medieval times in Western Europe: a comparison between archaeological and actual oak ring series (Quercus robur and Quercus petraea)" pot

... composition and on changes in vegetation cover, butfail to provide detailed information on forest structure and dynamics.Changes in the environmental conditions experienced bytrees and shrubs ... firewood and construction timber. In order to secure a sustainable source of firewood, the structure of the remaining forests was often altered. Especially coppice of European oak became increasingly ... (e.g. one growing season). Ring-widthseries can be converted to annual basal area increments (BAIi; Eq. (2))assuming that the growth rings form concentric circles. Such a con-version of ring-width...

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