Báo cáo lâm nghiệp:"Stand history and its consequences for the present and future dynamic in two silver fir (Abies alba Mill.) stands in the high Pesio Valley (Piedmont, Italy)" potx
Báo cáo lâm nghiệp: "Harvest scheduling with spatial aggregation for two and three strip cut system under shelterwood management" docx
... R6 R RR – removal cut; P – preparatory cut J. FOR. SCI., 57, 2011 (6): 271–277 271Harvest scheduling with spatial aggregation for two and three strip cut system under shelterwood managementM. ... adjacent strips within the re-generation period of 30 years.e three- cut shelterwood system consists of a pre-paratory, establishment, and removal cut. Like the two- cut system, three sequential cuts ... to strips 21 and 27; refer to Fig. 1b). us the total number of decision variables (66 for the two- cut system and 70 for the three- cut system) was greater than the total number of 58 strips....
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Báo cáo lâm nghiệp: "Effect of Melampsora larici-populina on growth and biomass yield of eight clones of Populus nigra" ppsx
... intensity of Melampsora larici-populina occurrence and the value of growth traits and biomass yield in Populus nigra e correlation between the growth traits of stem diameter and plant height and ... some clones (clones 7 and 107) no yield decline was observed at all or it ranged only from 6% to 9% (clones 49 and 152). It is to note that clone 107 and clone 152 were among the highest-yielding ... stability of the degree of infection within the particular clones of black pop-lar in the years of observation, the relationship be-tween the severity of clone infection by rust and the value of...
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Báo cáo lâm nghiệp: "Nutrition of silver fir (Abies alba Mill) growing at the upper limit of its occurrence in the Šumava National Park and Protected Landscape Area" pot
... 381JOURNAL OF FOREST SCIENCE, 56, 2010 (9): 381–388Nutrition of silver fir (Abies alba Mill) growing at the upper limit of its occurrence in the Šumava National Park and Protected Landscape AreaR. ... During the period 2006–2007, in the Czech part of the Bohemian Forest, samples of silver fir were taken mainly in the upper alti-tudinal limit of silver fir occurrence. In the present paper the ... presents the results of the nutrient bal-ance and content of the stress elements in the cur-rent year needles of fir taken in 2006 and 2007 in the Bohemian Forest, in the mature stands growing predominantly...
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Báo cáo lâm nghiệp: " Stand growth model using volume increment/basal area ratios" pot
... addition, these variables should be of easy measurement and understanding, and should Stand growth model using volume increment/basal area ratiosG. J. M P1, J. M. C2, M. V. ... estimate growths using biometric models previously developed. e growth values of each plot during the last twenty years were calculated to fit the model, using the ratio of total volume increment/basal ... Estimation of stand growth is crucial for forest planning. Estimations were usually done using fixed values, and recently growth equations have been used. An alternative is through stand growth models....
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Báo cáo lâm nghiệp: "Wedge prism as a tool for diameter and distance measurement" ppsx
... the distance when the blocks were on the borderline. e distance was measured using the laser telemeter with half -a- meter scale. e diameter was calculated and compared with the control measure ... of the diameter at various heights of stem using the wedge prism as a tool for measurement is a sufficiently accurate method for measurement and can be used for measuring the diameters in the ... method was also described for determining the tree diameter at breast height (B 1996). For testing the accuracy of the method the laser telemeter was used and then the measured diameter...
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Báo cáo lâm nghiệp: "rowth and health state of silver fir (Abies alba Mill.) in the ridge area of the Jizerské hory Mts" docx
... granite.Supported by the Ministry of Agriculture of the Czech Republic, Project No. MZe 0002070201.Growth and health state of silver fir (Abies alba Mill.) in the ridge area of the Jizerské hory Mts.V. ... dynamics of the height growth of the silver fir experimental plantings was evaluated on the basis of the results of the measurements of all trees liv-ing in 2007, and of the highest trees in 2007 ... K).CONCLUSIONSBased on the results of the investigations into the development of the silver fir plantations and the dy-namics, of some climatic factors, these conclusions are drawn: In the model area of the Middle...
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Báo cáo lâm nghiệp: "Germination after heat treatments of Pinus tropicalis Morelet and Pinus caribaea Morelet var. caribaea seeds of west Cuban forest" potx
... 10.1051/forest:2006027Original articleGermination after heat treatments of Pinus tropicalis Morelet and Pinus caribaea Morelet var. caribaea seeds of west Cuban forestsJorge D L Ha*,MartaBb, ... aFigure 1. Average cumulate rate of germinationfor replicates of 50 seeds of Pinus tropicalis and P. caribaea var. caribaea control seeds. of P caribaea var. caribaea in all tests. The highest ... thermiques sur des graines de Pinus tropicalis Morelet et Pinus caribaea Morelet var. caribaea de la forêt cubaine occidentale. Pinus tropicalis Morelet et P. caribaea var. caribaea sont deux des quatre...
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Báo cáo lâm nghiệp: "Effects of resource availability on condensed tannins and nitrogen in two Quercus species differing in leaf life span" doc
... Available online at:c INRA, EDP Sciences, 2007 www.afs-journal.orgDOI: 10.1051/forest:2007021Original articleEffects of resource availability on condensed tannins and nitrogen in two Quercus species ... radiation), at two water regimes (500 and 800 mm) and with two nutrient availabilities(standard substrate and 7% increase in soil N). The concentrations of soluble condensed tannins (CT) and nitrogen ... A., Nitsan Z., Effect of daily supplementation of polyethylene glycol on intake and di-gestion of tannin-containing leaves (Quercus calliprinos, Pistacialentiscus and Ceratonia siliqua) by goats,...
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Báo cáo lâm nghiệp: "Stand biometry and leaf area distribution in an old olive grove at Andria, southern Italy" pptx
... 10.1051/forest:2007026Original articleStand biometry and leaf area distribution in an old olive grove at Andria, southern ItalyJanˇC´a*,JanGˇ´a, Francesca D Lb,HamlynG.JcaInstitute ... general biometry data for an 80-year -old olive (Olea europea L., cv. Coratina) grove in Andria, southern Italy, and (2) to compare different methods for estimating leaf area distributions. Stand biometry ... cm2)theycontinued growing in length and width in a similar rate. The al-ABFigure 10. Radial pattern of leaf area density (LADrad) and total leaf area per annuli distribution in olive crowns,...
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Báo cáo lâm nghiệp: "Stand structure, competition and growth of Scots pine (Pinus sylvestris L.) in a Mediterranean mountainous environment" pptx
... 10.1051/forest:2007069Original articleStand structure, competition and growth of Scots pine (Pinus sylvestris L.) in a Mediterranean mountainous environmentAntonio Garc´ia-Abril,SusanaMartin-Fern´andez,M.AngelesGrande,JoseA.Manzanera*Technical ... diameter and basal area growth of Scots pine in theuneven-aged stand than in the even-aged stand and the plan-tation. Additional research using this kind of approach mightbe warranted, and ... current diameter growth and com-petition was characterised in four stand structures of Scots pine, and an analysis was made of the variables in uencingthis relationship in a mountain area with a continental...
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Báo cáo lâm nghiệp: "Short-term effects of fire on plant cover and soil conditions in two Austrocedrus chilensis (cypress) forests in Patagonia, Argentina" potx
... 6371â INRA, EDP Sciences, 2006DOI: 10.1051/forest:2005098Original articleShort-term effects of fire on plant cover and soil conditions in two Austrocedrus chilensis (cypress) forests in Patagonia, ... changes in understory and overstory, and in the patterns of soil temperature and moisture in burnedcypress forests of Patagonia. Once fire disturbance occurs, theduration and magnitude of post -fire ... post -fire effects on plant cover, in soil temperature (0, 5, 20, and 30 cm depth) and moisture (0–16, 20–36, and 40–56 cmdepth) were analyzed for two years in two cypress stands in Patagonia,...
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Báo cáo lâm nghiệp: "Classifying xylophone bar materials by perceptual, signal processing and wood anatomy analysis" pdf
... articleClassifying xylophone bar materials by perceptual, signal processing and wood anatomy analysisLoïc BRANCHERIAUa*, Henri BAILLÈRESa, Pierre DÉTIENNEa, Richard KRONLANDb, Bloen METZGERba ... twice/cm by marginal parenchyma bands in Swietenia, 15 times by bandsin Hymenolobium, while in the woods with poor acoustics thetissues were disrupted 35–50 times/cm by parenchyma bandsin Manilkara ... determinedempirically by the xylophone maker, can first be related to the Classifications of xylophone bar materials 81two sound signal parameters, i.e. temporal damping of the fun-damental frequency and to...
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Báo cáo lâm nghiệp:"Stand history and its consequences for the present and future dynamic in two silver fir (Abies alba Mill.) stands in the high Pesio Valley (Piedmont, Italy)" potx
... 2003DOI: 10.1051/forest:2003027Original articleStand history and its consequences for the present and future dynamic in two silver fir (Abies alba Mill.) stands in the high Pesio Valley (Piedmont, ... RESULTS3.1. Past land and forest use The forestry history of the high Pesio valley and the land-use of the territory were strongly influenced by the arrival of 370 R. Motta and F. Garbarino[17] Hytteborn ... origin, past forest dynamic and disturbance history. The historicaldevelopment and the successional history of these stands were investigated in two plots of 2000 m2 by means of the following...
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Báo cáo lâm nghiệp: "Impact of population dynamics of white mistletoe (Viscum album ssp. abietis) on European silver fir (Abies alba)" pot
... 10.1051/forest:2003072Original articleImpact of population dynamics of white mistletoe (Viscum album ssp. abietis) on European silver fir (Abies alba)Konrad Philipp NOETZLI*, Beat MÜLLER, Thomas ... stand of European silver fir (Abies alba) in the Rhine Valley (Canton of Grisons, Switzerland), 27 trees with heavyinfestation of white mistletoe (Viscum album ssp. abietis) were felled and population ... INTRODUCTIONThe hemiparasitic white mistletoe Viscum album L. attacksmany species of deciduous trees. In addition, some coniferousspecies are affected, notably European silver fir (Abies albaMill.)...
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Báo cáo lâm nghiệp: "doubling atmospheric CO concentration on 2 matter distribution and CO exchange of 2 yr growth, dry 2 old sweet chestnut trees (Castanea sativa Mill.)" pptx
... after a 2 wk adaptation period as the slope of C0 2 concentration over time in the wholechamber (Gaudillere and Mousseau,1989). During the two 1 st 2 wk, the C0 2 concentration ... where environmental conditionswere controlled (22 /15°C day-night, 15 hphotoperiod, 50% RH). Whole plant photo-synthesis at 25 0 jlmol-m- 2 s-1 PPFD and dark respiration were ... total dry matter of C0 2 -enriched chestnut plants observedin the growth measurements.Discussion and ConclusionTree species may react differently to ele-vated levels of atmospheric...
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