Báo cáo lâm nghiệp: "Gas exchange and water relations of evergreen and deciduous tropical savanna trees" docx

... exchange and water relations of evergreen and deciduous tropical savanna trees G. Goldstein 1 F. Rada 2 P. Rundel’ A. Azocar 2 A. Orozco 2 1 Laboratory of Biomedical and Environmental ... (1987) Water transport efficiency in stems of evergreen and deciduous savanna trees. In: Proceedings of the International Conference on Measure- ment...

Ngày tải lên: 09/08/2014, 04:20

... expanded leaves at the end of preconditioning, and 16, 28 and 36 days after withholding irrigation after transplanting. 2.6. Plant water potential and relative water content Predawn relative water ... Biomass of CS and SS plants of Nullo Mountain were similarly reduced by an average of 72% and 75% respec- tively. By contrast, CS plants of Wee Jasper and Tumbarumba...

Ngày tải lên: 07/08/2014, 16:20

... time, the level of activity decreased under the higher concentra- tions of O 3 : after 85 days, non-linear relationship was signifi- cant and the activity of G6PDH in the neoformed flush of the episodic ... parameters (Figs. 1 and 2). Biomass accumulation of leaves, stems, roots and foliar surface area of the two morphologically differ- ent groups of seedlings, shoot length...

Ngày tải lên: 08/08/2014, 00:22

... forest (rather open stand, subject to forestry law, northern exposure at an altitude of between 1600 and 1800 m). It was dried at room temperature and ground to a powder. ... Univ. Grenoble I, France Moreland D.E. & Novitsky W.P. (1987) Effects of phenolic acids, coumarins and flavonoids on isolated chloroplasts and mitochondria. In: Al...

Ngày tải lên: 09/08/2014, 04:20

... fluctuations of soil moisture and many pests. Localities character- istic of central uplands of the Hrubý Jeseník Mts., where natural spruce stand, spruce stand influenced by silvicultural activities and ... analysis of variance (MANOVA) was applied. CLU and MANOVA were used to evaluate the close- ness of the nutrient status of the spruce stands and to assess the closen...

Ngày tải lên: 07/08/2014, 03:22

... “connectivity” of strips. For example, (a) (b) Fig. 1. e study area landscape with management units (MUs) (a), and with strips (b) Table 2. Example of allocation and cutting progress of two-cut ... Japan 2 Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic 3 Department of Mathematical Analysis and Statistical Inferen...

Ngày tải lên: 07/08/2014, 10:21

... difference, s standard deviation of differ- ences, n number of observations and t n–1 (α) critical value of Student’s distribution with n – 1 degrees of freedom. Under assumption of the normal ... sum of log volumes gives the volume of the stem. e form height is a ratio between the stem volume and the diameter at breast height. e method of measuring the diameter at a c...

Ngày tải lên: 07/08/2014, 10:21

... associated and NW in the opposite side. Trees studied in this paper seem to cumulate advantages of angiosperms and gymnosperms by combining the production of strong TW on one side and a kind of light ... differs from the results of our study from a biomechanical point of view. In- deed, the biomechanical mechanism of Buxus and Pseudowin- tera is completely similar to that...

Ngày tải lên: 07/08/2014, 16:20

... 3, 6, and 10 yr old of hybrid poplar clones at four sites combined: means and standard errors, F-criteria and probability of fixed effects and variance components and standard errors for random ... description of X-ray densitometry analysis can be found in Zhang and Morgenstern [48] and Koga and Zhang [25]. Age trends in changes and variation of mean wood density and...

Ngày tải lên: 07/08/2014, 16:20

... a stand that reached a dominant height of 24 m for a mean DBH of 26.6 cm, with a basal area of 63.3 m 2 /ha. Only very little pruning and thinning were conducted on this stand. For each of the ... set of simulations, all the variables of the model altered, with exception of the variable of interest, which was fixed to its initial value at the beginning of a ring (Fig. 3B)....

Ngày tải lên: 07/08/2014, 16:20