Báo cáo lâm nghiệp: "Sapwood as the scaling parameter defining according to xylem water content" pot

... is clear from the above results that sapwood area estimated on the basis of Original article Sapwood as the scaling parameter - defining according to xylem water content or ... Phloem water decreased to about 53 % vol . There was no change in the heart- wood water. Since no radial pattern of sap flow was measured in the experimen...

Ngày tải lên: 09/08/2014, 04:20

... 528 J. FOR. SCI., 55, 2009 (11): 526–531 The aim of the present study was to evaluate cotyledon storage proteins as markers of the genetic diversity in sweet holm oak. MATERIAL AND ... analyzed, the best results were obtained with the glutelin fraction, which showed a high de- gree of polymorphism, finding up to 32 polymorphic bands in all the trees evaluated. On the ot...

Ngày tải lên: 07/08/2014, 10:22

... impact in the past. According to F et al. (2003), who assessed the forest health condi- tions in the monitoring plot Pec pod Sněžkou from 1986 to 2003, the average defoliation increased until ... needles and separated according to their diameter (P, S 2006). en they were carefully washed with water in order to remove as much mineral ad- mixtures...

Ngày tải lên: 07/08/2014, 03:22

... the vapour has to pass. Vapour from marginal parts of the veneer set passes to the ambient air and the vapour pressure decreases. Due to the pres- sure decrease evaporation stops at the expense ... occur. According to drying the marginal parts of the veneer set this proc- ess will transfer to the centre of the set, resistance for the vapour passage will in...

Ngày tải lên: 07/08/2014, 03:22

... primarily. After the air pollution induced decay of forest stands in the mountain regions of the Czech Re- public in 1970s to 1990s, there was a problem of autochthonous tree species planting failure on the ... America was the most extended substitute tree species used in the higher mountain localities of the Czech Republic (M et al. 2005). It was used as a substitu...

Ngày tải lên: 07/08/2014, 03:22

... from groundwater, which further deepens the water deficit. According to P et al. (1985), the spruce has a higher foliage biomass as compared e.g. with the beech or pine, and the difference ... localities, the tree injury has been observed in the several last years and its progression is rapid, we can hypothesise about the presence of another stress factor partici...

Ngày tải lên: 07/08/2014, 03:22

... 2010–2020 according to tree species Fig. 5. Prospective prognosis of the production of quality classes of logs for the years 2010–2020 Spruce, r Hornbeam Poplar, willow Other broadleaved Together Together J. ... 1998) into the practice of forest management in 1990 in the whole territory of Slovakia. Since 1990 the growing stock in most stands has been determined using these...

Ngày tải lên: 07/08/2014, 03:22

... respectively. These words are used to describe a jumble of things. The idea of “dis- organization” contributes to the perception of the forest as frightening. When asked to describe what the woodland ... socio-economic study in the SNP. My aim was to get a better understanding of the local customs. Propos- als to the government for a sustainable management of...

Ngày tải lên: 07/08/2014, 03:22

... desiccation. On the other hand, the worst-growing clone 548 had the least favourable values of these parameters. – The results of measurements of chlorophyll fluorescence and water losses during ... designated as F v /F m was computed, representing the maximal photochemical efficiency of photosystem II. is characteristic is used most frequently to assess the state of a...

Ngày tải lên: 07/08/2014, 03:22

... practices and as stated by E (1992) with regard to all restrictions, positive as well as neg- ative aspects of their use, it is necessary to consider their use also in future. As the last author ... repeated measurements 70% of them were used for the construction of yield ta- bles and the remaining 30% are new measurements. With regard to the principal aim o...

Ngày tải lên: 07/08/2014, 03:22