Báo cáo lâm nghiệp: "Limitation of photosynthetic activity by CO 2 availability in the chloroplasts of oak leaves from different species and during drought" pdf
Báo cáo lâm nghiệp: "Limitation of photosynthetic activity by CO 2 availability in the chloroplasts of oak leaves from different species and during drought" pdf
... deviation from linearity, con-firming that even under stress conditions,Original articleLimitation of photosynthetic activity by CO 2 availability in the chloroplasts of oak leaves ... availability in the chloroplasts. Finally, the CO 2 availability decreased with increasing drought in the soil, stressing the importance of reducedinflux of CO 2 as an important ... therefore used combined mea-surements of gas exchange and chlorophyllfluorescence to estimate the availability of CO 2 in the chloroplasts of different species of oaks compared...
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Báo cáo lâm nghiệp: "Forest transport roads according to natural forest regions in the Czech Republi" pps
... (m/ha)30 24 18 12 60 1 2b 4 6 8 10 12 14 15b 17 19 21 23 25 27 29 31 33 35 37 39 41 2a 3 5 7 9 11 13 15a 16 18 20 22 24 26 28 30 32 34 36 38 4080 J. FOR. SCI., 54, 20 08 (2) : 73–83RESULTSOne of the ... morphological conditions of the Czech Republic. According to the Management Forest Institute the optimal density of forest transport roads is 15 m/ha in lowlands, 22 .5 m/ha in highlands and 27 .5 m/ha in ... classified as Other Areas, according to § 3 of Forest Act No. 28 9/1995 of the 3rd of November 1995. ese forest roads were designated 2L1 (in principle forest roads of 2L grade in according to...
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Báo cáo lâm nghiệp: "Differential photosynthetic and survival responses to soil drought in two evergreen Nothofagus species" docx
... PPFD became probably saturating at a Ψmlower than 2. 5 MPa, producing the increase of NPQ in N. dombeyi and the concomitant decrease in Fv/Fm, ∆F/Fm and qP. In conclusion, this study provides ... at the Universidad Austral, Valdivia,Chile. During June 20 04, 100 two-three years old seedlings of N.dombeyi and N. nitida were collected from semi-shade in second-growth stands in the Coast ... Santiago,1958. [2] Brodribb T., Hill R.S., The photosynthetic drought physiology of adiverse group of southern hemisphere conifer species is correlatedwith minimum seasonal rainfall, Funct. Ecol. 12 (1998)...
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Báo cáo lâm nghiệp: "Argan (Argania spinosa (L.) Skeels) seed germination under nursery conditions: Effect of cold storage, gibberellic acid and mother-tree genotype" docx
... effect of GA and cold in the case of argan seedgermination. From the results of this study, dormancy can bebroken using GA or cold storage, but the presence of GAappears to speed up germination ... germination avoiding long exposure of the seeds to contamination. This probably has to do with the fra-gility of the argan nut contained within the slightly crackedstone and weighing less 5 g in average ... 31.5 27 .0 31.0 31.0 30.1 aRS Yes 27 .5 a 24 .5 a 24 .0 a 17.0 b 23 .3 bMean 29 .5 25 .8 27 .5 24 .0 26 .7No 25 .0 a 4.0 b 1.5 b 3.0 b 8.4 aDS Yes 2. 0 0.0 1.0 0.5 0.9 bMean 13.5 2. 0 1.3 1.8 4.7Different...
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Báo cáo lâm nghiệp: " Site quality equations for Pinus sylvestris L. plantations in Galicia (northwestern Spain)" ppt
... within the guide curve method [25 27 , 41, 47, 51].All of these studies together covered the three main areas of dis-tribution of the species in Spain: the Sistema Central Moun-tains, the Sistema ... re-measured in the winter of 20 03. These plots were selected for developing a dynamicgrowth model for the species in the area of study, thus the initialnumber of plots installed in 1996–1997 was considerably ... reducedbecause the plots measured twice provided better information con-cerning the development of Scots pine stands. The dominant height of each of these plots was calculated as the mean height of the 100...
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Báo cáo lâm nghiệp: "Classifying xylophone bar materials by perceptual, signal processing and wood anatomy analysis" pdf
... ranged from 140 to 28 0 µm in all of the good acousticwoods and from 60 to 160 µm in the poor acoustic woods. The vessel frequency/mm 2 ranged from 2 to 8 (up to 18 in Commi-phora) in the “good” ... growthrings, with the ring parallel to the tangential grain of the wood. The longitudinal direction was colinear to the longitudinal axis of the spec-imens. The specimens were stabilized in a ... between the acoustic classification and the wood anatomy The acoustic quality of the woods could not be explained by any vessel characteristics. The present findings do not complywith the theory...
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Báo cáo lâm nghiệp: "A flexible radial increment model for individual trees in pure even-aged stands" pdf
... 26 2 659.08 314.91 328 .59 868.79 lgg 0.001991 26 2 488.38 3 02. 61 300.60 754.70 glg 0.0019 92 2 62 374.14 28 3 .24 27 6 .24 680.97 glg 0.001993 22 4 318. 82 258. 32 255.33 624 .23 glg 0.001994 22 4 3 12. 94 ... 3 12. 94 27 5 .25 27 5.47 540 .23 lgg or glg 0.001995 22 4 28 1.15 26 1.65 26 1 .22 518.56 ggg 0.691996 22 4 29 6.93 27 7.50 27 5.50 623 .85 ggg 0.601997 22 4 28 6.33 27 9.70 28 0.01 717.46 ggg 40.471998 22 1 107.91 ... 0.051986 26 1 357.85 23 3.90 23 4.85 391.37 lgg or glg 0.001987 26 2 1 023 .24 587.03 600.14 1 095.09 lgg 0.001988 26 2 1 23 3.18 499.73 496 .25 1 418. 12 glg or lgg 0.001989 26 2 549.47 23 9.81 24 6. 42 724 .38...
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Báo cáo lâm nghiệp: "Are ecophysiological responses influenced by crown position in cork-oak?" ppsx
... dehesas in the Iberian Peninsula and one of the mostimportant forest species occurring in Por-tugal. The most striking feature of these oak stands is their savanna-like structure. ... studied. We investigated the variation of stom-atal conductance within the crown of a cork -oak (Q suber L), by studying its diurnal and seasonalcourses at two different ... toaccomodate the microclimatic constraints which affect the particular position they occupy in the crown of cork -oak. cork -oak / isolated tree / microclimate / stomatal conductance...
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Báo cáo lâm nghiệp: "Apoplast: a sensitive site for assessing some biochemical in Norway spruce needles" potx
... 03 or S0 2 could lead to H2 02 production (Tingey and Taylor, 19 82; Khan and Malhotra, 19 82) . In order to protect the plasma membrane and the compo-nents of the extracellular ... exposure, the decreased extracellular enzyme activity and the increased protein content in the IWF of young needles could be explained by the high 03 concentration applied (20 0 ... rapid and sensitivemethod for the quantitative determination of microgram quantities of protein utilizing the principle of protein-dye binding. Anal. Bio-chem. 72, 24 8 -2. 54Brown...
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Báo cáo lâm nghiệp: "phosphate fertilization on trace element nutrition pinaster grown in a sandy acid soil" pot
... other coniferous species in copper- or boron-deficiency conditions. The similarity of the symptoms and the very low trace-element contents in thesesandy acid soils were consistent ... in February 1987 from 10 trees for eachtreatment.Adult pines (24 yr old) 2 treatments were replicated 3 times in arandomized bloc: control and 22 8 kg-ha-1 P205 (25 ... in 3 yr old pines (twisting of branches and leaders, abundant fascicleshoots, loss of apical dominance, die-back of the top and production of unlignified tis-sues). The...
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