Báo cáo lâm nghiệp: "A flexible radial increment model for individual trees in pure even-aged stands" pdf
Báo cáo lâm nghiệp: "A flexible radial increment model for individual trees in pure even-aged stands" pdf
... 327–335© INRA, EDP Sciences, 2004DOI: 10.1051/forest:2004026Original articleA flexible radial increment model for individual trees in pure even-aged standsChristine DELEUZEa*, Olivier PAINa, ... various individual growth models for trees in pure and even-aged stands, a generic model with aform parameter according to each species is proposed. With a final objective of implementing this model ... segmentedcubic model for Douglas-fir, to take into account a more gradualincrease of increment for transitional trees, between suppressedand dominant.The general form of Dhôte’s model is quite interesting...
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Báo cáo lâm nghiệp: "A stochastic height-diameter model for maritime pine ecoregions in Galicia (northwestern Spain)" doc
... to model the response due to thinning. It is assumed that anyformulation to take into account the effect of thinning must includethe thinning intensity, the stand age at the time of thinning ... function, For. Sci. 34 (1988) 790–797.[7] Calama R., Cañadas N., Montero G., Inter-regional variability in site index models for even-aged stands of stone pine (Pinus pineaL.) in Spain, Ann. For. ... dominant diame-ter) already account for the thinning effect on the tree h-drelationship. Therefore, an additional thinning response varia-ble was not included in the model. Model (21) was finally...
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Báo cáo lâm nghiệp: "A two-step mortality model for even-aged stands of Pinus radiata D. Don in Galicia (Northwestern Spain)" doc
... mortality model for Pinus radiata 441or logit function is the most widely used in mortality models for standsor individual trees [1, 10, 11, 16, 25, 26, 39, 40]. The logistic model is formulated ... or stand density increase and it increases when thevalue of the relative spacing index increases (e.g., with inten-sive thinnings). The influence of these variables was shown in other stand or ... logistic model of individual tree mortality for aspen, white spruce and lodgepole pine in Alberta mixedwood forests, Can. J. For. Res. 31 (2001) 283–291.[41] Zunino C.A., Ferrando M.T., Modelación...
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Báo cáo khoa học: "A flexible radial increment taper equation derived from a process-based carbon partitioning model" pot
... y-axis: stem area increment ∆G (cm2yr–1). Influence of model parameters on the[ShX] model for the profile of stem area increment. Thick line:predicted stem area increment for model ShX with ... andhigh thinning intensity, (“s2”) high productivity and lowthinning intensity, (“s3”) low productivity and high thin-ning intensity, (“s4”) low productivity and low thinningintensity. In each ... carbon partitioning in process-based models and stem radial increment profiles in usualtree growth and yield models. Stem increment profilesare indeed very similar to allocation in the tree....
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Báo cáo lâm nghiệp: "A survey of forest pollution with heavy metals in the Natural Forest Region (NFR) Moravskoslezské Beskydy with particular attention to Jablunkov Pass" docx
... observed in the stands resulted in a de-crease in tree vitality, infestation by bark beetle and finally in the mortality of trees (M 1967). As the region concerned is under a long-lasting in uence ... samples in the case of Cd and Zn in the whole country.e results of needle analyses conducted in Nor-way spruce stands on old spoil banks in the Black Forest (Schwarzwald) are very interesting in ... titrimetric method for N (Kjeltec, Tecator), spectrophotometry for P (Spekol 11), flame emission for K and AAS-Flame for Ca, Mg.Dry ashing and uptake in HNO3 were used for de-termination of B,...
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Báo cáo lâm nghiệp: "A comparison of fitting techniques for ponderosa pine height-age models in British Columbia" potx
... height models exist for ponderosa pine. Dolph[7] developed models that estimate height increment for younger trees from site index and other variables, most importantlydiameter increment. These models ... asthat for model (5). Therefore, I recommend the use of model (4) for estimating the height of ponderosa pine in British Columbia.The models cannot be algebraically inverted to predict siteindex ... serial correlation, and using nonlinear mixed modelling so that site index could be treatedas having a random component. The final version of the model tested for differences in height growth patterns...
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Báo cáo lâm nghiệp: "Application of digital elevation model for mapping vegetation tiers" pdf
... the deviation explained by the model (D2) is 0.49. Model for vegetation tierse model for vegetation tiers in which elevation was included as the independent variable explains 78% of variability ... vegetation, and in addi-tion, it includes the in uence of slope steepness and possibly other variables (terrain shading, latitude). Relatively simple formulae for radiation have been introduced ... sophisticated models are incorporated in geographic information systems (Š, H 2004; P Jr. et al. 2005). e aim of presented paper is to explore possibili-ties of using DEM for mapping...
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Báo cáo khoa học: "A Class-Based Agreement Model for Generating Accurately Inflected Translations" pptx
... clustering for large scale class-based language modeling in machinetranslation. In ACL-HLT.S. Vogel, H. Ney, and C. Tillmann. 1996. HMM-based wordalignment in statistical translation. In COLING.P. ... models into a self-contained component in thetranslation decoder.3 Inference during Translation DecodingScoring the agreement model as part of translationdecoding requires a novel inference ... to model these constraints is with a unification-based gram-mar (UBG). Johnson (2003) presented algorithms for learning and parsing with stochastic UBGs. However,training data for these formalisms...
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Báo cáo lâm nghiệp: " A collection of functions to determine annual tree carbon increment via stem-analysis" pot
... of radial increment [4, 18,27]. They are in fact negatively correlated i.e. higher ring wooddensities are associated to smaller radial increments :. Evidences of this inverse relationship for ... and forest habitat type, For. Sci. 30 (1984) 943–965.[23] Mörling T., Evaluation of annual ring width and ring density deve-lopment following fertilisation and thinning of Scots pine, Ann. For. ... could be used in order toassess stem C pool and C increment through a non-destructivedirect sampling. This could be simply done by measuring theheight of sample trees, extracting an increment...
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Báo cáo lâm nghiệp: "A pheasantry as the habitat of small terrestrial mammals (Rodentia, Insectivora) in southern Moravia (Czech Republic)" doc
... as dominant species in the herb stratum. ere were two lines of traps led in a trees cropping mast oak forest, one line in a young oak stand, one in a spruce forest, one in a pine forest ... oak forest, one line in a mixed forest (Quercus sp., Tilia sp., Carpinus sp., Acer sp.), one in a locust stand and one at an oak forest edge. Each line con-sisted of 20 snap traps, the line ... changes in the water regime in floodplain forests after 1972 (Z 1991). e general decrease of Soricidae in southern Moravia during the last 40 years was obvi-ously caused by changes in the...
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