Báo cáo lâm nghiệp: "Relationships between the intra-ring wood density assessed by X-ray densitometry and optical anatomical measurements in conifers Consequences for the cell wall apparent density determination" pps
Báo cáo lâm nghiệp: "Relationships between the parameters of aboveground parts and the parameters of root plates in Norway spruce with respect to soil drainage" docx
... trees growing in well-drained sites. Inter- estingly, on the other hand, in waterlogged sites, the mean value of R rp was 159 cm only, but it was 211 cm in trees growing in well-drained sites. ... results concerning the cor- relation between the C pi and the root plate width. He reported these two variables being in correlation in the both types of the studie...
Ngày tải lên: 07/08/2014, 10:22
Báo cáo lâm nghiệp: "Relationships between the intra-ring wood density assessed by X-ray densitometry and optical anatomical measurements in conifers. Consequences for the cell wall apparent density determination" pps
... have reported the X-ray wood density measurement and the wood density profiles cal- culated by the mean of the cell wall proportion obtained by image analysis of the sections. The cell wall proportion ... et al. and (ii) the cell wall proportion on its area or on a section withdrawn from it. The apparent density of the cell wall is then...
Ngày tải lên: 08/08/2014, 01:22
Báo cáo lâm nghiệp: "Relationships between hydraulic traits and habitat preference for six Acer species occurring in the French Alps" pptx
... (Kmax) and the diameter of the stem segments used as indicated by the strong coefficients of determination obtained for every indi- vidual. The analysis of variance and the tests of Tuckey- Kramer indeed ... high water transport. In contrast, plants need to invest less in means of acquiring water for their growth in dry habitats, and therefore reduced in xylem vu...
Ngày tải lên: 08/08/2014, 01:22
Báo cáo lâm nghiệp: " Relationships between browsing damage and woody species dominance" doc
... 0.05) between the percentage of damaged individuals and dominance. P (1986) found out the nega- tive correlation between damage and dominance for Pinus sylvestris and Populus tremula in ... structure in mountain forests in the eastern Italian Alps. Forest Ecology and Management, 181: 139–150. PADAIGA V., 1986. Measures for protecting forest stands from elk...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: "Relationships between site and stock quality in Pinus halepensis Mill. reforestation on semiarid landscapes in eastern Spain" ppsx
... in July and December in the first year (2004) and Decem- ber in the second year (2005). These variables were computed from records from the weather station network located in the vicinity of the ... these stations, whereas the temperature was corrected for altitude differences by the determination of the difference between mean monthly temperatures between th...
Ngày tải lên: 07/08/2014, 16:21
Báo cáo lâm nghiệp:"Relationships between soil factors, Quercus robur health, Collybia fusipes root infection and Phytophthora presence" doc
... of roots, inducing superficial lesions, the root infec- tion index was thus computed by taking into account these infected roots. In the three plots, Ainvelle, Mersuay and Filain, there was a ... 0.002). Indeed, the severity of infection increased in the 3 stands when waterlog- ging signs appeared deeper in the soil (Fig. 1). In Mersuay, the root infection index tended...
Ngày tải lên: 08/08/2014, 01:21
Báo cáo lâm nghiệp: "Relationships between stem size and branch basal diameter variability in Norway spruce (Picea abies (L.) Karsten) from two regions of France" doc
... caused by four factors: • In living whorls, the differences between the thickest branch and thinnest one increases as and when the tree grows. • With tree ageing, living whorls also contained ... (i) Finding the best equation for modelling the relationships between branch diameter and branch height within the tree (the tree model). (ii) Fitting the model tree...
Ngày tải lên: 08/08/2014, 01:22
Báo cáo lâm nghiệp: "Findings from the application of coal combustion by-products (CCB) for forest reclamation on spoil banks of the North Bohemian Brown Coal Basin" pdf
... by- products CCB into the soil profile, also by several ploughing operations, including subsequent treatment of soil by disking for the growing of a crop for green manuring, is a condition for ... the stage of flowering and incorporated into the soil profile by disking. In autumn 2000 and in spring 2001 the plot after such a reclamation was reforested with bare...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: " Changes of the mixed mountain virgin forest after 70 years on a permanent plot in the Ukrainian Carpathians" pps
... stages and phases in the plot, and with distinct volume of lying deadwood. Changes that took place in the studied forest since the 1930’s were not influenced by human activities, and hopefully, ... in the Carpathian Biosphere Reserve, this natural course of the forest development will be maintained in future. For better understanding of the developmental cyc...
Ngày tải lên: 07/08/2014, 10:22
Báo cáo lâm nghiệp: "Linking intra-tree-ring wood density variations and tracheid anatomical characteristics in Douglas fir (Pseudotsuga menziesii (Mirb.) Franco)" pot
... Varcin E., Leban J.M., Relationships between the intra- ring wood density assessed by X-ray densitometry and optical anatomical measurements in conifers. Consequences for the cell wall apparent density ... diminution of wood density at the beginning of a ring, and explains it by a temporary short- age in substrate for cell- wall constr...
Ngày tải lên: 07/08/2014, 16:20