Báo cáo lâm nghiệp: "A change in structural diversity and regeneration processes of the spruce virgin forest in Nefcerka NNR (TANAP) in relation to altitude" docx

... diﬀerence in the index was conﬁrmed in the spruce virgin forest in the altitudi-nal range of 1,300–1,400 m.e analysis of the structure of the spruce virgin forest in Nefcerka NNR assessed according ... Education of the Slovak Republic, Project No. 0082-06.A change in structural diversity and regeneration processes of the spruce virgin forest in Nefcerka NNR (TANAP) in relation to altitudeJ. ... 9.3% in the breakdown stage up to 19.1% in the growth stage of the total number of individuals of natural regeneration. e natural regeneration structure of the stud-ied spruce virgin forest Nefcerka...

Tài liệu Báo cáo khoa học: A facile method for expression and puriﬁcation of the Alzheimer’s disease-associated amyloid b-peptide pdf

... with the expected composition, indicating that the peptide is of the correct sequence and free of contaminating pro-teins. Five cycles of N-terminal sequencing conﬁrmed the expected residues including ... chromatogram obtained with UV absorption at 214 nm, the middle panel is the corresponding total ion-current after infusion into the mass spectrometer, and the bottom panel is the mass spectrum of the ... due to morerapid handling using the devices and loss of peptide on the column resin. The only detriment of the peptidesproduced here is the fact that they contain an exo-genous N-terminal...

Báo cáo lâm nghiệp: "A pheasantry as the habitat of small terrestrial mammals (Rodentia, Insectivora) in southern Moravia (Czech Republic)" doc

... dioica and Aristolochia clematis 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, ... out in 2002 to 2005. Small mammals were sampled using the standard method of line trapping by means of snap traps (P 1975) and combinations of snap and fall traps laid in the shape of ... species in this locality. e following groups of forest types were identified there: Ul-meto-Fraxinetum carpineum, Saliceto-Alnetum and Carpineto-Quercetum acerosum. As to the shrub and herb...

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

... to the in uence of bedrocks, rich in minerals containing these elements. Substantially lower are the contents in humus samples from the monitoring network (ca 3,000 points) in Finnish forests ... that the anoma-lous value of the median is caused by the high pol-lution and the presence of humus in the uppermost mineral horizon in the area of the Pass. Pb content in the humus layer is therefore ... yellowing of Norway spruce stands. In this comparison the enrichment of the humus layer in NFR 40 and especially in the Jablunkov Pass is remarkable in respect of zinc and cadmium contents, the...

Báo cáo lâm nghiệp: "A ﬁre probability model for forest stands in Catalonia (north east Spain)" pot

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Báo cáo lâm nghiệp: "A growth model for Pinus radiata D. Don stands in north-western Spain" doc

... structure, the whole-stand modelrequires ﬁve stand-level inputs for simulation: the age of the stand at the beginning and the end of the projection interval, and the initial dominant height, number of ... datacomprises the inventories carried out in 1995, 1998, and 2004 and on the date of the thinning operations. In addition, data from the ﬁrst and second measurements of twothinning trials installed in ... from the corresponding log volumes and the volume of the top of the tree. The third source of data corresponds to the 421 trees felled.Summary statistics, including the mean, minimum, maximum, and standard...

Báo cáo lâm nghiệp: " A dendroecological reconstruction of disturbance in an old-growth Fagus-Abies forest in Slovenia" docx

... disturbance in the 1980s, 1950s, and 1880s. In the oldest portion of the chronology the number of trees showing release was low, but this was mainly an arti-fact of the drop in sampling depth after the ... prior to the 1980s, forest inventory records from the study area were infrequent and of insuﬃcient detail to record localized damage from infrequentstorm events. The only storm event mentioned in ... is indicated by lines.which were major release events (above 50% of the value of the boundary line) and 184 of which were moderate releases(between 20% and 50% of the value of the boundary line)(Fig....

Báo cáo lâm nghiệp: "A method for describing and modelling of within-ring wood density distribution in clones of three coniferous species" ppt

... proportion of certain type of woodwithin a ring). The within-ring variation is the most significant source of wood variation, and wood uniformity is one of the mainrequirements by the processing industry ... starts in spring and stops at the end of summer or at the beginning of autumn. During the activeperiod, the cambium produces a number of xylem cells of dif-ferent shapes and sizes. Two classes of ... distribution,(iii) to determine contribution of genetic causes to the vari-ability in the distribution, and to examine the potential utility of using parameters describing within-ring distribution of wood...

Báo cáo lâm nghiệp: "A stochastic height-diameter model for maritime pine ecoregions in Galicia (northwestern Spain)" doc

... effect of thinning must include the thinning intensity, the stand age at the time of thinning and the timesince thinning [17, 25, 39, 61]. In this work, to consider the thinning effect, the term proposed ... Effect of thinning in height-diameter relationship In the study of the effect of thinning in h-d relationship, anew dummy variable to test if there were differences betweenthinned and unthinned ... is the stand age at thin-ning; A is the stand age at prediction and α is the parameter to be esti-mated. This equation takes into account the thinning intensity and the time from thinning....

Báo cáo lâm nghiệp: "A fire probability model for forest stands in Catalonia (north-east Spain)" pptx

... diameters. The variable is close to one in rather uneven stands and approaches to zero in homogeneous stands. The logarithm of the maximum value of Ele-6 and 1 wasused to express the trend seen in the ... METHODS2.1. Inventory plots The modelling data comprised inventory data of forest stands, onone hand, and fire occurrence data, on the other hand. The data on for-est stands were obtained from the ... Secondly, the impor-tance of the variable in terms of forest inventory and management aswell as its simplicity was considered. Finally, the effect of adding the variable on the odds ratio of the...

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