Báo cáo lâm nghiệp: "Variability of stomatal conductance in the crown of a maritime pine (Pinus pinaster Ait )" pps

... of the day. Variation in vapor deficit and irradiance explained only 33% of the variation of gs. No stratification could be shown in the crown at any time of the day. Soil ... In the pre-drought period, the stomatal response to air water vapor deficit and irradiance explains 52% of the total gs variation; gs decreases as D in...

Ngày tải lên: 09/08/2014, 04:20

... No information on Scots pine stand thinning was available, and so pine was not included in the analysis with this variable. Thinning intensity (expressed as ratio of basal area decrease to ini- tial ... range. Figure 5a shows that models 2 and 3 sensitivity against b max values is maximal for age = age max at the same basal area. It increases with increasing basal area, but wit...

Ngày tải lên: 08/08/2014, 01:22

... investigated area (open space 34% of damaged individuals, below the stand 32% of dam- aged individuals) whilst average damage in the CR is 21% of damaged individuals. Table 4. e occurrence of tree ... statistical methods that are described in the work Inventory of forests in the Czech Republic, Set of mathematical and statistical evaluation methods, Mathematical...

Ngày tải lên: 07/08/2014, 03:22

... using the incorporation of cDMO as a indicator of organ sink strength in oak, that on the 2nd day, the apex is a stronger sink than the other organs [4]. We also localized the SuSy protein in ... accumulated in the medular and cor- tical parenchyma whereas it was absent of the differentiating vascular tissue or of the shoot apical meristem (Figs. 2A and 2B)...

Ngày tải lên: 08/08/2014, 00:22

... 20th of January 2000 3.2.1. Apical initials [Fig. 1(2)] Outer tangential walls of apical cells were thicker than anti- clinal walls and inner tangential walls. The surface of outer tangential walls ... especially in the rib meristem. Starch grains were least abundant in the apical initials. Differences also concerned the character of tannin vacuoles [Figs. 2(8) and 2(9)]....

Ngày tải lên: 08/08/2014, 01:21

... depression Diurnal and seasonal fluctuations in the bark respiration of standing Quercus acutissima trees in Nakaizu, Japan Y. Kakubari Laboratory of Silviculture, University of Shizuoka, ... with an interface board to an I/O processing unit and infrared gas analyzer (Kakubari, 1988). Results and Discussion Seasonal fluctuations in bark respirat...

Ngày tải lên: 09/08/2014, 04:20

... by a copper-constantan thermocouple. After gas exchange measure- ments, leaf area was determined by an area meter (AAM5, Hayashi). Dry weight of leaves was measured after ... was provided as basal dressing. Until the final supply, total amount of nitrogen in each pot was 5.0, 1.5, 1.0 and 0.35 g. Sup- plying date and the percentage agains...

Ngày tải lên: 09/08/2014, 04:20

... Braatne, 1994). At the interface between the plant and the atmosphere, their aperture actively controls both water loss and the CO 2 uptake. The determinism of stomatal aperture ... zones of the soil are producing ABA that provoke stomatal closure. An argument in favor of hormonal signals is that the stom- atal conductance can be r...

Ngày tải lên: 08/08/2014, 18:21

... height of the tree crown, position of the tree in the stand) operate simultaneously, in uenc- ing the character and the organization of individual anatomical elements, including varying wood ... models is again a confirmation of the statistical results of ANOVA. e created functions and equa- tion coefficients valid for the description of the wood density va...

Ngày tải lên: 07/08/2014, 03:22

... clearly shows that the trends are very similar in all the zones. ere are two obvious groups of data in the models. e first group contains the data in the area of the central part of the ... width and the percentage of late wood. eir conclusions can be accepted, as also in the case of the sample tree we can see the same relationships of dependence...

Ngày tải lên: 07/08/2014, 04:20