Báo cáo lâm nghiệp: " Diurnal evolution of water flow and potential in an individual spruce: experimental and theoretical study" pps

... spatiales. Oecol. Plant. 2, in press Jarvis P. (1975) Water transfer in plants. In: Heat and Mass Transfer in the Biosphere. Part 1. Transfer Processes in Plant Environment. ... obtain an estimation of the total re- sistance of the transpirational pathway (Fig. 3). It is possible to determine the 3 parameters (2 resistances and 1 capa...

Ngày tải lên: 09/08/2014, 04:20

... reces- sion of water- demanding species in time, and on the other hand, also an increase in the wood flora species on sites not in uenced by water. e drop in soil moisture and its reflection in the ... the water table height and length of time when water stagnates once the floods drop. e full- area surveys including the updating of maps where the position of...

Ngày tải lên: 07/08/2014, 03:22

... together. In the same way, we evaluated necrotising of crowns (index of crown necrotising – I CN ) and of whole trees (index of whole tree necro- tising – I NWT ). A methodical explication of the indi- ces, ... Po- land can be considered as favourable. Apart from the indices of necrotising, it was also confirmed by the values of the frequency of crowns, stems, and who...

Ngày tải lên: 07/08/2014, 04:20

... pines (Pinus syl- vestris L.) growing in northern and western Poland. MATERIAL AND METHODS Investigations were conducted in northern and western Poland in production pine stands (Fig. 1). Mean sample ... Mean values and confidence intervals for S V /C H in individual age classes Fig. 6. Mean values and confidence intervals for S V /C H in individual social classes o...

Ngày tải lên: 07/08/2014, 10:22

... medicine as astringent, antiseptic and balsamic [5, 10]. Leaves and fruits were used against respiratory and urinary diseases [5,9]. Essential oil extracted from these organs is rich in α-pinene and ... using the per- centage of polymorphic bands P r %[P r % = (polymorphic bands/total bands) × 100)] and Shannon’s H  index [H  = (−Σπ i log 2 π i )/L, π i is the frequency of t...

Ngày tải lên: 07/08/2014, 16:21

... allocation of carbon resources in both induced and constitutive defenses, leading to altered herbivore resistance and plant growth [23]. Moreover, plant genotype and environmental conditions can interact ... interactions, respectively, F and B are the number of fertilization treatments and blocks, respec- tively, and σ e 2 is the residual variance. Approximate standard erro...

Ngày tải lên: 08/08/2014, 00:22

... metallurgical plants in Europe. On the other hand, the plantations sampled in the Krivorozhje region are located on mining dumps, dealing with thermal treatment of iron-ore and metal smelting (K 2 ), and ... found than in their original stands. Values of Ho (9.3 to 11.9%) and in particular He (2.3 to 3.2%) observed in the selected populations were notably lower than in t...

Ngày tải lên: 08/08/2014, 01:21

... than in explants cultured without IBA, where IAA is apico-basally distributed. Epstein and Lavee (1986) reported a transformation of IBA into IAA during in vitro culture of ... to investigate this point, and experiments using radiolabeled IBA and BA would be of great interest in this perspective. The last result was not illustrated because...

Ngày tải lên: 09/08/2014, 04:20

... during sunny days on young fully 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 ... 10% of control at the end. 2.3. Plantation and post-transplanting period When the preconditioning period ended, 30 randomly selected plants per provenance (20 C plants and...

Ngày tải lên: 07/08/2014, 16:20

... wilting point (pF 4.2), taking into account the percentage of gravels. Finally, predawn and midday water potentials were measured in Q. ilex trees during the summer of 2002 and 2003 by means of the ... explained as a conse- quence of a decrease water input, and an increase of water output in the sub-canopy area. The evergreen Q. ilex presents a rainfall interceptio...

Ngày tải lên: 07/08/2014, 16:21