Báo cáo lâm nghiệp: " Influence of repeated defoliations by

Báo cáo lâm nghiệp: " Influence of repeated defoliations by insects on wood increment in common oak (Quercus robur L)" pps

... former one alone to describe annual wood increment. Short note Influence of repeated defoliations by insects on wood increment in common oak (Quercus robur L) VV Rubtsov Institute ... effects of insect defoliations on stem wood increment have been studied by many investigators. Results and techniques used can be found for commo...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Influence of fire and tree-fell on physiological parameters in Quercus ilex resprouts" potx

... and Ca content C, P, K and Ca content of the leaves on a dry weight basis showed significant differ-

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp:"Influence of basic density and temperature on mechanical properties perpendicular to grain of ten wood tropical species" pot

... detailed study of mechanical behav- iour of green wood is prevailing to determine peeling and machining ability [10]. In particular, influence of temperature has to be taken into consideration [1, 8]. Veneer ... test To go further in the investigations, we studied the influence of species on one criterion: E R measured from compression tests. Figure 9 presents the evoluti...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: " Influence of temperatures and precipitation on radial increment of Orlické hory Mts. spruce stands at altitudes over 800 m a.s.l" ppt

... with low increments were also conﬁrmed by the analysis of negative pointer years (Table 3). In the following period there is an increase in increments, with slight interruptions in 1996 and ... 1. Synchronization of average tree- ring curves of individual stands Table 2. Synchronization of average tree-ring curves of individual stands Compared curves T-test Synchroniza...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: " Influence of stand density, thinning and elevated CO2 on stem wood density of spruce" pot

... and non-stressed conditions. In: JACOBY G.C., HORNBECK J.W. (eds.), Proceedings of the Inter- national Symposium on Ecological Aspects of Tree-Ring Analysis. Springfield, National Technical Information ... ese inconsistent results obtained for individual coniferous species can be also caused by diﬀerences in cultivation design and also in fumiga- tion duration. Presented val...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Influence of pulverized limestone and amphibolite mixture on the growth performance of Alnus incana (L.) Moench plantation on an acidified mountain site" potx

... during the conversion of blue spruce stands even under environmentally highly stressing conditions, (2) to assess the foliar nutrient status of the alder as a precondition of positive in uence ... mountains, 6 th forest altitudinal (vegetation) zone, were planted in three subplots (replications). In spring 2002, half of the living trees in each replication were treated w...

Ngày tải lên : 07/08/2014, 04:20

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Báo cáo lâm nghiệp: " Influence of a planting hole application of dolomitic limestone powder and basalt grit on the growth of Carpathian birch (Betula carpatica W. et K.) and soil chemistry in the air-polluted Jizerské hory Mts." pptx

... plantation response as liming. e increasing concentrations of foliar S and N might indicate a persisting air-pollution load on the site, which is in agreement with the outcomes of a long-term monitoring ... comparisons. Trends in the nutrition of plantations were evaluated using the linear-regression lines smoothing the mac- roelement concentrations recorded within a variant...

Ngày tải lên : 07/08/2014, 10:22

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Báo cáo lâm nghiệp: "Influence of light and competition on crown and shoot morphological parameters of Norway spruce and silver fir saplings" doc

... alone often do not explain the ecological performance of a species in different environments [12, 19]. Indeed, species partitioning among different light environments is often the result of ... analyzed using non-linear functions of Table Curve 2d software (SPSS Inc.); the coefficient of determination (r 2 ), the statistical significance of the regression (P) and the 95% confi...

Ngày tải lên : 08/08/2014, 00:21

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Báo cáo lâm nghiệp: " Influence of environmental conditions on radial patterns of sap flux density of a 70-year Fagus crenata trees in the Naeba Mountains, Japan" ppsx

... was monitored continuously throughout the growing season using the heat dissipation method according to Granier [4, 5]. Heating of the upper probe was carried out along a 20 mm long winding in ... shown in Figure 2E. In contrast, rainfall during the remaining period of study was more evenly distributed. The seasonal trend in θ day at 0.25 m depth can be explained by the differen...

Ngày tải lên : 08/08/2014, 00:21

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Báo cáo lâm nghiệp: "Influence of flooding on growth, nitrogen availability in soil, and nitrate reduction of young oak seedlings (Quercus robur L.)" docx

... partitioning was impaired by flooding especially in leaves. Further experiments will be help- ful to clarify (i) the role of ammonium assimilation pathway in maintaining amino acid content in root ... involve- ment of cytokinin in bud break initiation of Quercus rubra seedlings. Initiation of new roots in stressed seedlings began 26 days after flooding exposure, length and...

Ngày tải lên : 08/08/2014, 00:22

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