Báo cáo lâm nghiệp: "Effect of climatic factors on the dynamics of radial increments of Norway spruce, European beech and sessile oak" potx

... the effect of climatic factors on radial increments of trees e effect of climatic factors on radial increments of trees was studied in detail by means of corre- lation analysis on standardized ... correlation models of the effect of climatic factors on radial increments of trees After performing the detailed analysis of pair cor- relation...

Ngày tải lên: 07/08/2014, 10:21

... skidding track, the only one of all of them, is situated perpendicularly to the direction of prevailing winds, in contradiction to plot 3 where the skidding track follows the direction of prevailing ... 323–329 confirmed under conditions of this investigated locality. CONCLUSION Based on the analysis of a part of results from the international IUFRO trial CZ...

Ngày tải lên: 07/08/2014, 03:22

... Republic ABSTRACT: The effect of ethephon (80, 100 and 120 mg·l –1 ) and gibberellic acid (GA 3 ) (40, 300 and 1,000 mg·l –1 ) on the germination capacity (GC) and mean germination time (MGT) of European beech ... of the present paper was to deter- mine the effect of gibberellic acid and ethephon on overcoming beechnut dormancy and stimulation of beechnut...

Ngày tải lên: 07/08/2014, 10:21

... 1995). They also confirm an assumption that in the process of adaptation to adverse environmental conditions at higher altitudes spruce populations gain their resistance to the account of growth ... to the develop- ment of seedlings of standard and large dimensions. MATERIAL AND METHODS Seeds used for the cultivation of planting mate- rial originated from the spruce...

Ngày tải lên: 07/08/2014, 10:21

... temperature and rainfall during the five years of study with Pearson correlation based on a significance level of 5% with the t test. The effect of age of the plantation on monthly mean annual number of ... Gerais, Brazil where they were counted and identified by comparing them to individuals of the Museum of Entomology of the UFV and of other centres...

Ngày tải lên: 08/08/2014, 00:21

... University of Thessalonici, Sc. Ann. Depart. For. Nat. Environ. 28 (1985) 303–370. [23] Markalas S., Problems on the control of the pine processionary moth, Proceeding of the symposium Protection of ... diameter increments in the pine trees are considerably affected by the defoliation of the larvae, P < 0.05. The results of Tukey’s mean separation test for th...

Ngày tải lên: 08/08/2014, 00:21

... between the T and the WT at the end of the trial (Oct. 2002), that was greater in the WT. From the beginning of the plantation, the N showed significant differences between the T and the WT. ... extreme ecological conditions, which, together with the advanced meth- ods that are being obtained for its reproduction in the nursery, widens the scene for the con...

Ngày tải lên: 08/08/2014, 00:22

... dynamics showed the transformation of secondary stand with domination of aspens into the stand with dominant spruce and significant admixture of alder in wet part of the experimental plot. 3.5. Comparison of ... certain different proportions and with admixture of some other deciduous species are typical in the region of the southern European taiga. The area...

Ngày tải lên: 08/08/2014, 00:22

... unit GU 2 and so on (Fig. 2A). The successive tiers of branches can easily distinguish the growth units. They correspond to the forester notion of “node” [13, 24, 28] and to the notion of “morphogenetical” ... needles all the way up the tube and observe whether their width and the number of stomata change. In this way, the number of needles could allow us t...

Ngày tải lên: 08/08/2014, 01:21

... mentioned above. The rate of physiological recovery is dependent on the severity of drought [14] but also on the conditions and duration of preplanting stor- age; as the storage period is lengthened ... the expres- sion of osmotic adjustment [33]. Coutts [9] and Sucoff et al. [39] reported that the root system in conifers is prone to desic- cation, essentially, und...

Ngày tải lên: 08/08/2014, 01:22