Báo cáo lâm nghiệp: "Evaluation of changes in the landscape management and its influence on animal migration in the vicinity of the D1 motorway in Central Bohemia" ppsx
Báo cáo lâm nghiệp: "Evaluation of the growth and health status of selected clone mixtures in comparison with ordinary planting stock" docx
... in the framework of long-term programmes using the clonal propagation (J et al. 1994); their re-Evaluation of the growth and health status of selected clone mixtures in comparison with ... exposed locations where their observation continues and their growth and health status are compared with the ordinary planting stock of generative origin. e objective of these experiments is ... both the individuals with intensive growth dynamics and the slow-growing individuals were selected for a subsequent mixture of clones). After their growing in a nursery they were outplanted in...
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Báo cáo lâm nghiệp: "Evaluation of squared timber and log products in the Hyrcanian Forests of Iran" doc
... shedding light on the pro-cesses and trends of squared timber and log pro-duction and the relations between them in the Hyr-canian Forests of Iran during the last 20 years.MATERIALS AND METHODSAreas ... bordering the northern part of the Alborz Mountains and ex-tend from Astara in the west of Gilan Province to Giledarreh in the east of Golestan province, and are about 800 km in length and ... and 29.2% over the first and the second decade, re-spectively. Analyses of the data indicate the following converse linear equation between squared timber products and log products during the...
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Báo cáo lâm nghiệp: "Evaluation of changes in the landscape management and its influence on animal migration in the vicinity of the D1 motorway in Central Bohemia" ppsx
... linear constructions include direct occupation of biotopes, recolonization of the landscape in the construction of roads, environ-mental contamination, and widely various types of interference ... quantification of the landscape macrostructure’s evolution as affected by the construction and subsequent operation of the linear structure in the form of a motorway and by associated linear and polygon ... sec-tion was chosen primarily because of its proximity to Prague and its associated strong anthropogenic pressure in uencing the landscape structures in the vicinity of the linear construction in...
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Báo cáo lâm nghiệp: "Evaluation of physiological and health state of Norway spruce plants with different growth rate at juvenile stage after outplanting at" pdf
... of young spruces with known growth rate in a nursery and after outplanting are carried out in the framework of the grant project “Conservation of the stability and biodiversity of Norway spruce ... practice). Height and diameter growth and health status of outplantings are evaluated regularly on this research plot. A more detailed evaluation of phenology and physiological state was done in ... crown devastation 01234 170 J. FOR. SCI., 57, 2011 (4): 170–177JOURNAL OF FOREST SCIENCE, 57, 2011 (4): 170–177Evaluation of physiological and health state of Norway spruce plants with diff...
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Báo cáo lâm nghiệp: "Evaluation of twenty-years-old pedunculate and sessile oak provenance tria" doc
... prov-enances of sessile oak: 11 Křivoklát (6.36 m) and 31 Bučovice (6.62 m) and of pedunculate oak: 12 Křivoklát (6.72 m) and 45 Strážnice (6.76 m). e type of branching of sessile oak is character-ized ... stem shape evaluation document that fi ve provenances of sessile oak and four prov-enances of pedunculate oak had the highest propor-tion of straight stems. For the majority of the prov-enances ... individual provenance plots are given in Tables 8 and 9. e comparison of total mean heights of both oak species showed that pedunculate oak grows faster than sessile oak with the exception of Plasy...
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Báo cáo lâm nghiệp: "Evaluation of three methods for estimating the Weibull distribution parameters of Chinese pine (Pinus tabulaeformis)" pps
... 566 J. FOR. SCI., 54, 2008 (12): 566–571JOURNAL OF FOREST SCIENCE, 54, 2008 (12): 566–571Evaluation of three methods for estimating the Weibull distribution parameters of Chinese pine (Pinus ... on the basis of the mean square error (MSE) and sample size. For these sample plots, the moment method was superior for estimating the parameters of Weibull distribution for tree diameter distribution. Keywords: ... introducing the LSM for fitting the Weibull distribution and compar-ing their performances with the MLE and MOM. The objective of this research is to assess and compare the accuracy of the above three...
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Báo cáo lâm nghiệp: "Linking intra-tree-ring wood density variations and tracheid anatomical characteristics in Douglas fir (Pseudotsuga menziesii (Mirb.) Franco)" pot
... explains intra-tree-ring wood density change, and (2)sorting out tracheid anatomical characteristics in order of im-portance.The work was carried out with Douglas fir (Pseudotsuga menziesii (Mirb.) ... between wood den-sity and tracheid characteristics along a tree-ring, i.e. on intra-tree-ring variations. However, it is also interesting from thesedata to investigate how wood density and tracheid ... 2006)Abstract – In this study, a geometric approach was used in order to model the relationships between intra-tree-ring wood density variations and tracheid anatomical characteristics. One Douglas fir was...
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Báo cáo lâm nghiệp: "Drought conditioning improves water status, stomatal conductance and survival of Eucalyptus globulus subsp. bicostata seedlings" ppt
... between survival and RWC 36-days aftertransplanting in seedlings of E. globulus. subsp. bicostata Each pointrepresents the mean value of five observations of each treatment.to plant survival and ... among prove-nances of several Eucalyptus [25, 42], between and withinsubspecies of E. globulus [15, 54], as well as among clones of E. globulus subsp. globulus [34]. After preconditioningwe detected ... 297–302. Drought conditioning in Eucalyptus seedlings 947Figure 4. Midday relative water content (RWC,% )and stomatal conductance (gs) in seedlings of E. globulus subsp. bicostata over the...
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Báo cáo lâm nghiệp: "Evaluation of a semi-empirical model for predicting fine root biomass in compositionally complex woodland vegetation" ppsx
... part of a larger projectthat examined patterns of below- and above-ground biomass in Eu-calyptus populnea woodland ecosystems along a rainfall gradient in northeast Australia [25]. Here, data ... 247c INRA, EDP Sciences, 2007DOI: 10.1051/forest:2007002Original articleEvaluation of a semi-empirical model for predicting fine root biomass in compositionally complex woodland vegetationAyalsew ... 2006)Abstract – We used measures of plant size, distribution and root core data to evaluate capability of the model of Ammer and Wagner [2] for spatiallyexplicit prediction of fine root biomass (FRB) in...
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Báo cáo lâm nghiệp: "Evaluation through a simulation model of nutrient exports in fast-growing southern European pine stands in relation to thinning intensity and harvesting operations" doc
... and SG-ratio tested depending on thinning intensities for radiata pine and maritime pine. Pinus radiata Pinus pinaster Intensity of First thinning Second thinning First thinning Second thinning thinning ... study was to calculate the accumu-lation and the export of nutrients over time in Pinus pinaster(maritime pine) and Pinus radiata (radiata pine) stands under a range of silvicultural alternatives, ... exports of pine plantations and thinning 379Figure 1. Nutrient removals and nutrient returns to soil as logging residues due to thinnings and clear-cutting as a function of thinning intensity and...
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Báo cáo lâm nghiệp: "Evaluation of competition and light estimation indices for predicting diameter growth in mature boreal mixed forests" pdf
... CONCLUSIONS In this examination of competition indices for predicting diameter growth in mixed- species forests, we found that theflexible, distance-dependent crowding index was superior toother indices, but ... based indices [6, 7, 27] is also costly to ob-tain in a forest inventory. The similarity amongst the fit of Competition indices in boreal mixed forest 489mechanistically defensible. Lodgepole pine ... Evaluation of some competition indices for the pre-diction of diameter increment in planted white spruce, Can. For. Serv. Inf. Rep. FMR-X-108, 1978.[3] Bartelink H.H., Effects of stand composition and...
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Báo cáo lâm nghiệp: "Solar activity, global surface air temperature anomaly and pacific decadal oscillation recorded in urban tree rings" pot
... especially in the 2–4 years band width. urban tree rings / sunspot number / Pacific decadal oscillation / global surface air temperature anomaly / wavelet analysisRésumé – Impact de l’activité solaire, ... Sun Y., Tao D.L. Solar activity, global surface air temperature anomaly and pacific decadal oscillation signals observed in urban outskirts tree ring records fromShenyang, China. Adv. Space Res. ... Chinese pine trees (Pinus tabulaeformis Carr.) growing in Shenyangcity was studied to analyze the effects of solar activity, Global Surface Air Temperature Anomalies (GSATA) and the Pacific Decadal...
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Báo cáo lâm nghiệp: "Carbon stock changes in a peaty gley soil profile after afforestation with Sitka spruce (Picea sitchensis)" potx
... shallow peatlands (mainly peaty gleys) have been planted with coniferous forests, mostly Sitka spruce (Picea sitchensis (Bong.) Carr) [3]. Afforestation on peaty soils may cause an increase in ... (stand agesbetween 2 and 34 years old) in Florida. Afforestation on natural grassland, clearfelling and replant-ing also caused changes in the soil bulk densities, mainly in theorganic layer. ... 873880â INRA, EDP Sciences, 2005DOI: 10.1051/forest:2005078Original articleCarbon stock changes in a peaty gley soil profile after afforestation with Sitka spruce (Picea sitchensis)Argyro ZERVA,...
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Báo cáo lâm nghiệp: "Fertilization at planting impairs root system development and drought avoidance of Douglas-fir (Pseudotsuga menziesii) seedlings" pot
... articleFertilization at planting impairs root system development and drought avoidance of Douglas-fir (Pseudotsuga menziesii) seedlingsDouglass F. JACOBSa,b*, Robin ROSEa, Diane L. HAASEa, Patricio ... the poor root development of seedlings fer-tilized at a relatively high rate in this study.We expected increased root proliferation at or above theposition of CRF placement and greater root damage ... likely a function of greater allocation of biomass to shoot relative to root tissues and the reductions in root biomass, first-order lateral -root length, and number of white root tips, which limited...
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Báo cáo lâm nghiệp: "Evaluation of new silvicultural alternatives for Scots pine stands in northern Spain" pot
... retained and the kind of mixed stand[33]. Finally, other recent studies concerning silvicultural aspects of Scots pine (Pinus sylvestris L.) without includingGTR can be founded in Mörling [22] ... different silvicultural alternatives. The yield model was elaborated for Scots pine stands in northern Spain using 75 temporary plots from the Sec-ond National Forest Inventory of Spain. These ... Mörling T., Evaluation of annual ring width and ring density deve-lopment following fertilisation and thinning of Scots pine, Ann. For. Sci. 59 (2002) 29–40.[23] Öhman K., Creating continuous...
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