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

... Map of projected canopy areas of the investigated Fagus crenata trees in the Naeba Mountains, Japan. The shaded canopies indicate the measurement trees. Table I. General characteristics of the investigated ... Adiku S., Kakubari Y., Influences of environmental factors on the radial pro- file of sap flux density in Fagus crenata growing at...

Ngày tải lên: 08/08/2014, 00:21

... leaf area and a reduction in shoot growth, which is very unusual and may have resulted from the timing of the nutrient application. The accumulation of the carbon surplus ... which the main branches grew. After the end of July, 62% of the enriched plants ceased growth as compared with 37% of the controls. The early onset of...

Ngày tải lên: 09/08/2014, 04:20

... observed after 4 wk (Table II). In late leaves, the influence of light conditions of the previous year was not observed (Table II). Leaf anatomy Table III summarizes data on anatomical features. ... agree and demonstrate that the light conditions to which plants have been exposed have an influence on the development of early leaves th...

Ngày tải lên: 09/08/2014, 04:20

... way the regional index residual tree-ring chronology was created in the ARSTAN application. e chronol- ogy has low values of autocorrelation. e standard regional tree-ring chronology was ... cornerstone of dendrochronological applications is the knowledge that trees growing in the same area, it means in the same conditions, have the same reaction expressed by th...

Ngày tải lên: 07/08/2014, 03:22

... calculation was based on the length of internodial section and its middle cross-sectional circle area measurement. SWD of tree was calculated as the weighted average (according to length of internodial ... cultivation. Stand density of two subvariants (s – sparse with ca 5,000 trees/ ha and d – dense with ca 10,000 trees/ ha) and thinning impact (intensity of 27%) on...

Ngày tải lên: 07/08/2014, 03:22

... classified as a suitable prepara- tory species even under the harsh environmental conditions of the 7 th and 8 th forest altitudinal zones. No growth stagnation as a result of transplanting ... the linear-regression lines smoothing the macro- element concentrations recorded within a variant in the years of sampling. For each macroelement and variant, the exist...

Ngày tải lên: 07/08/2014, 04:20

... variant. On the other hand, in the basalt and control treatments, the foliar Ca concentrations have significantly increased since planting. e concentration of Mg in the leaves of limed trees ... concentration of ex- changeable K; probably as a consequence of silicate weathering. In the 0–10 cm horizon of the limestone variant, the increased content of...

Ngày tải lên: 07/08/2014, 10:22

... structural fragmentation of the canopy and the clustering pattern of nat- ural regeneration [15] lead to a high spatial variability of light in the understory and of competition between saplings. An ... Grassi, R. Giannini and silver fir saplings are mainly attributable to differences in physiological traits rather than morphological ones. Among the examined parameters,...

Ngày tải lên: 08/08/2014, 00:21

... glutamate synthase are synthesized during anoxia in rice roots. These findings indicate that the glutamine synthetase/glutamate synthase cycle could play an important role in amino acid accumulation ... during flooding and reached only about 34% of the control at day 34. At day 54, 14 days after drainage, lateral roots of the flooded seedling showed a large increase in bioma...

Ngày tải lên: 08/08/2014, 00:22

... Brancheriau section [2]. Timoshenko [8] defined K as the ratio of the average shear strain on a section to the shear strain at the centroid. The K value is thus 2/3 for a beam with a rectangular ... beam equation by integration of equations based on the three-dimensional elasticity theory. A new shear factor formula was proposed which integrates Poisson’s ratio for...

Ngày tải lên: 08/08/2014, 00:22