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

... to a gap was still lower after 30 days than in the leaves of plants left in the shade and in control seedlings growing in the gap.Photoinhibition in beech seedlings grown in the shade and ... weight and volume of shoots and root systems than seedlings grown in the shade. A higher number of leaves, larger total leaf area and higher dry matter of leaves per 1 plant were de-termined in seedlings ... erent light conditions after outplanting. Many data are available on reactions of seedlings grow-ing in the shade to a sudden increase in light access. Some characteristics change very rapidly,...

Báo cáo lâm nghiệp: "rowth and health state of silver fir (Abies alba Mill.) in the ridge area of the Jizerské hory Mts" docx

... beginning of autumn. e height growth was evalu-ated according to the parameters of all living ﬁr indi-viduals in 2007 and according to 20% of the highest individuals to avoid an undesirable ... parameters in the planting variants and blocks were tested using t-test, conﬁdence intervals, and two-factor analysis of variance ANOVA (M, M 2002).RESULTS AND DISCUSSIONAverage ... to the mid-nineties of the last century.MATERIAL AND METHODSResearch plot (RP) was established on a clearing due to salvage felling (an area of about 20 ha) in the upper part of the south-western...

Báo cáo lâm nghiệp:"Growth and biomass partitioning of Fagus sylvatica L. and Quercus robur L. seedlings in response to shading and small changes in the R/FR-ratio of radiation" pot

... 10.1051/forest:2003009Original articleGrowth and biomass partitioning of Fagus sylvatica L. and Quercus robur L. seedlings in response to shading and small changes in the R/FR-ratio of radiationChristian Ammer*Lehrstuhl ... orderbranch biomass with increasing light intensity was found byCornelissen [12] for Castanopsis fargesii and by Wiebel et al.[53] for Garcinia mangostana. In addition, an increasingnumber of branches ... how shading comparable to the light conditionsbelow the canopy of a heavily thinned pure Norway spruce(Picea abies [L.] Karst.) stand affects growth and biomasspartitioning of seedlings of European...

Báo cáo lâm nghiệp: "Growth and litter decomposition of woody species inoculated with rhizobia and arbuscular mycorrhizal fungi in Semiarid Brazil" ppsx

... “Woody Caatinga” [36] showing as dominantbotanical families: Mimosaceae, Caesalpiniaceae, Fabaceae and Bignoniaceae [12]. In 1993 two accidental burns reachedabout 90% of the ecological reserve, ... highinfiltration rate and low levels of organic matter [12]. The mean tem-perature in a year is 26–29 °C. An area of 1.08 hectare was cleared of Carrasco plants and prepared for Anadenanthera ... block in a transect of 100 m across each of 3 blocks and mixed for eachblock, 4 and 24 months after transplanting. Similar transect was made in 3 adjacent fields with “Carrasco vegetation”, Caatinga...

Báo cáo lâm nghiệp: " Growth and mineral content of young chestnut trees under controlled conditions of nutrition" ppsx

... atpH 4.8 and a relationship between soil acid-ification and increasing solubility of toxicelements such as manganese and aluminium. In addition, variations in soil pH ... element availability in the soil and increase its pH. They also induce variations in cation content within different organs, eg, significant increases in calcium and magnesium ... increased in 1995 in O and A and remained constant for the oth-ers. The highest Mn levels (fig 2d) wereobtained in O and gradually decreased from A to C and D. In...

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

... that higher water supplies ap-parently imposed to Q. ilex [10]. Regarding Q. faginea,thein-creased of C/N with watering was paralleled by [N] decline and by Npoolincrease, showing that a larger ... bymeans of a two-way analysis of variance (ANOVA). In addition, treat-ment effects on whole-plant traits were further analysed within eachspecies using a one-way ANOVA. Differences between treatments ... faginea had the lowest value atMW whereas there was no difference between LW and HW(Fig. 6). Stpoolwas differently a ected by watering in Q. ilex and Q. faginea, being higher at MW and at HW in...

Báo cáo lâm nghiệp: "Growth and yield model for uneven-aged mixtures of Pinus sylvestris L. and Pinus nigra Arn. in Catalonia, north-east Spain" pptx

... species’ basal area to the total stand basalarea increases ingrowth (Eqs. (8) and (9)); increasing ratiobetween continentality and elevation increases P. nigra ingrowth; and increasing stand elevation ... growth, basal area, dbh, total basalarea of P. sylvestris larger trees, total basalarea of larger trees thinned during the next10-year period, total basal area of largertrees of P. nigra and accompanying ... and Pinus nigra Arn. in Catalonia, north-east SpainAntoni TRASOBARES a *, Timo PUKKALAb, Jari MIINAc a Centre Tecnològic Forestal de Catalunya, Pujada del seminari s/n, 25280, Solsona,...

Báo cáo lâm nghiệp: "Growth and nutrition of container-grown ponderosa pine seedlings with controlled-release fertilizer incorporated in the root plug" docx

... a 1.19 a 0.99 a 1.00 a 1.00 a Ca (%) 0.17 a 0.16 a 0.18 a 0.17 a 0.20 a 0.18 a 0.18 a 0.18 a 0.21 a 0.20 a Mg (%) 0.14 ab 0.13 b 0.16 ab 0.14 ab 0.15 ab 0.15 ab 0.15 ab 0.17 ab 0.17 ab 0.18 a ... incorporated in con-tainer grown seedling root plugs and pointed out that release rate and application rate were the key factors determining control-led-release fertilizer performance.Application of ... 235 abc 223 abc 257 ab 271 a Mn (ppm) 147 a 135 a 149 a 135 a 194 a 207 a 193 a 246 a 197 a 183 a Mo (ppm) 0.55 ab 0.32 b 0.55 ab 0.45 ab 0.41 ab 0.40 ab 0.45 ab 0.49 ab 0.51 ab 0.61 a Table...

Báo cáo lâm nghiệp: "Intra- and interannual variations of transpiration, leaf area index and radial growth of a sessile oak stand (Quercus petraea)" doc

... both a daily and annual basis.Leaf area index (LAI, the ratio of leaf areaper unit ground area) was often found to be a powerful parameter for the analysis of stand ... of both seasonal and interannual trends of T/PET. The mechanism involved in theinteractions between intensity and duration of drought, LAI, transpiration and basal areaincrement ... time paces. The modifications of transpiration were successively analysedas a consequence of i) seasonal and annualvariations in leaf area index and ii) soil waterbalance....

Báo cáo lâm nghiệp: "Morphological and physiological micropropagation" ppt

... low stomatal conduc-tances and rates of gas exchange (TableI). Intercellular C02 concentration wasvery low and CilC a of these plants wasapproximately 60% of that found ... (A) was measured at various ambientP(C02) and NC¡ (intercellular C02 concentra-tion) analysis was performed (Farquhar and Sharkey, 1982). Plants examined using theabove ... such that carbon gaineventually proves inadequate to sustaingrowth and development.ReferencesAtkinson C.J., Winner W.E. & Mooney M .A. (1986) A field-portable exchange system...

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