Báo cáo lâm nghiệp: "Reconstruction of crown length of Norway spruce (Picea abies (L.) Karst.) and Silver fir (Abies alba Mill.) – technique, establishment of sample methods and application in forest growth analysis Peter SPATHELF" ppt

... variables, the stratification of the crown and the deletion of segments. In the present study, the effects of the choice of the auxiliary variable and of the created crown structure (segments and nodes, ... dele- tion of the stem segments. After this closer look at the old pine, the effect of stratification and deletion of the stem seg...

Ngày tải lên: 07/08/2014, 03:22

... 6215648902. Contribution to the knowledge of Clethrionomys glareolus populations in forests of managed landscape in Southern Moravia (Czech Republic) J. S Faculty of Forestry and Wood Technology, ... found in southern Moravian forests as exerted by the bank vole gnawing the stems of young trees. In controlled forests 40% of young o...

Ngày tải lên: 07/08/2014, 03:22

... respect to damage to forest stands. In the present paper, the population dynamics of As is described in larger forest complexes of southern Moravia depending on the biotope and food supply including ... (Apodemus sylvaticus) . Journal of Zoology (London), 198: 83–102. SUCHOMEL J., 2007. Contribution to the knowledge of Clethrionomys glareolus populatio...

Ngày tải lên: 07/08/2014, 03:22

... 277 Stable Agrobacterium-mediated transformation of Norway spruce embryogenic tissues using somatic embryo explants D. P, J. B, H. N, J. V Institute of Plant Molecular ... plants after the co-cultivation of embryo- genic tissues with Agrobacterium tumefaciens. e possibility of Agrobacterium-mediated transforma- tion of spruc...

Ngày tải lên: 07/08/2014, 10:21

... variability of xylem cell formation in the last tree ring does not aff ect the function of xylem tissues as a whole considerably.  e conducting phloem of Pinaceae consists of living, mature ... 8.0 Old stand 36.9 35.3 20.1 226 J. FOR. SCI., 57, 2011 (5): 226–232 JOURNAL OF FOREST SCIENCE, 57, 2011 (5): 226–232 Preliminary study on phloemogenesis in Norway spruce:...

Ngày tải lên: 07/08/2014, 10:21

... males. In the years of heavy swarming (2005 and 2008) we saw a difference between males and females in the time of swarming; the swarming of females cul- minated at the time when the swarming of ... fluctua- tions in the intensity of swarming were due to low evening and night temperatures (rain). During the entire period of swarming the males outnumbered th...

Ngày tải lên: 07/08/2014, 10:21

... characteristics of GE and GC of analysed samples of short- term stored seed (S) and long-term stored seed (L) in the first year (T1) and the second year of testing (T2) Variant N Germination energy (GE %) Germination ... values of germina- tion energy (GE) and germination capacity (GC) in individual months (M = 1, 2, 3 … 12), in total 10 for short- term (...

Ngày tải lên: 07/08/2014, 10:21

... stand composition) from each taxon used for the reforestation of the state of reclamation “A” and “B” Fig. 3. Fraxinus excelsior L. in the treatment with the application of CCB Fig. 4. Populus ... L. in the treatment with the application of CCB Fig. 5. Tilia cordata Mill. and Pinus nigra Arn. in the treatment with the application of CCB Fig. 6. Deform...

Ngày tải lên: 07/08/2014, 10:21

... ad- vantages of such. MATERIAL AND METHODS To obtain D. schmidtii larvae it is recommended to simply beat the bottom branches of the food- plant up to 3 m above ground level. The larvae of this ... possibilities. (C) Degree of isolation of the population present on the site in relation to the natural range of the species. (D) Global assessment of...

Ngày tải lên: 07/08/2014, 10:21

... spread in the Mediterranean basin. In Spain, few studies on the genetic variability of this species have been displayed. Storage seed proteins are a useful tool in the evaluation of the genetic ... 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 AN...

Ngày tải lên: 07/08/2014, 10:22

... correlation between the aboveground parameters and the depth of root plates in spruce trees growing both in waterlogged and in well-drained sites. According to our results, it seems that the roots of ... 353 JOURNAL OF FOREST SCIENCE, 56, 2010 (8): 353–360 Relationships between the parameters of aboveground parts and the parameters of...

Ngày tải lên: 07/08/2014, 10:22

... 10.1051/forest:2006027 Original article Germination after heat treatments of Pinus tropicalis Morelet and Pinus caribaea Morelet var. caribaea seeds of west Cuban forests Jorge D L H a * ,MartaB  b , ... a Figure 1. Average cumulate rate of germination for replicates of 50 seeds of Pinus tropicalis and P. caribaea var. caribaea...

Ngày tải lên: 07/08/2014, 16:20

... angle. between the height of insert point of the highest branch and the height of insert point of the branch of interest). In every annual shoot of the stem, the branches were ordered from the top to the ... Branch location on Atlas cedar tree stem 717 the growth rate of the parent shoot. In particular, the great ex- tent of the ne...

Ngày tải lên: 07/08/2014, 16:21

... Norway spruce (Picea abies (L.) Karst.) and Silver fir (Abies alba Mill.) – technique, establishment of sample methods and application in forest growth analysis Peter SPATHELF Forstdirektion Tỹbingen, ... competition, right: Norway spruce, released; diagonal = crown length 0). Figure 9. Development of crown ratio (cr) of th...

Ngày tải lên: 08/08/2014, 01:21

... which had more basic ones. A similar distribution was observed in tobacco (Cabanne et al., 1977). These biochemical changes of early stages of initiation have yet to be verified in ... trees makes the sampling problem for biochemi- cal studies on the early steps of flowering a crucial one. Another approach to this problem is to find a...

Ngày tải lên: 09/08/2014, 04:20