Báo cáo lâm nghiệp: "Analysis of herbicide effects on Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) natural regeneration" ppsx

... al.Survival of Laccaria inoculated on Douglas fir Original article Survival after outplanting of the ectomycorrhizal fungus Laccaria bicolor S238N inoculated on Douglas fir (Pseudotsuga menziesii (Mirb.) ... year after outplanting, height of all cuttings was measured. Survival of Laccaria inoculated on Douglas fir 83 Survival...

Ngày tải lên: 30/06/2014, 05:04

... m 3 /ha (according to Report on the Condition of Forests and Forestry in the Czech Republic, 2004). Timber felling In the whole post-war period, annual timber fell- ing in the forestry of Czech Republic ... some dynamic series of forest production and trends of forest economics in the Czech Republic V. K Faculty of Forestry and Woo...

Ngày tải lên: 07/08/2014, 03:22

... on high growing stock, wood production and especially the values of mensurational indices attract attention. At Analysis of herbicide effects on Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) ... Effect of site preparation on survival and growth of Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) seedlings. New Forests, 3: 89–98. G L. (1...

Ngày tải lên: 07/08/2014, 03:22

... precipitation rates, these machines are likely to remain the most common type of skid- ding machine used. In mountainous and steep areas, the terrain slope is an important factor that a ects operational ... costs and erosion. It may also a ect the soil compaction, so in planning forest operations and aligning skid trails the terrain slope may be an im- portant consideratio...

Ngày tải lên: 07/08/2014, 03:22

... 2003 SP 26 028 OC 04 Modification of Utility Properties of Wood Materials and Extension their Using. Analysis of the production potential of raw wood in the forests of Slovakia R. P, J. M National ... in the area dis- tribution of age classes occurred mainly due to the realization of regeneration felling, including salvage felling in the sta...

Ngày tải lên: 07/08/2014, 03:22

... international IUFRO experiment dealing with the ra - tionalization of young spruce stand tending (A 1977). One part of this series, Machov CZ 14 experi- Effect of stand segmentation on growth and ... values (mean and standard deviation) of stand volume (open triangles) and volume of mean stem (grey circles) of spruce stands in Machov experiment at the...

Ngày tải lên: 07/08/2014, 03:22

... in the last decade of April, the snow melting rate in spruce reached about 26 mm/day, in beech about 28 mm/day and in the open area maximally 37 mm/day. All snow melted in spruce and in the ... process of snow precipitation in the spruce and beech stands, snow depth and snow water equivalent were always higher in the leafless br...

Ngày tải lên: 07/08/2014, 04:20

... variability of the applied amount of fertilizers (meeting the required amount in the particular parts of Habovka area) 2001). On the other hand, the complex analyses of aerial spraying and quality ... needles before the application of fertilizer or dolomitic lime- stone, and to evaluate the total amount of substance (whether the amount of substance...

Ngày tải lên: 07/08/2014, 10:21

... Brno, in the vicinity of the Brno Dam, and the second area (area B) was situated northeast of Brno, on the southern border of the for- est ground belonging to the Křtiny Training Forest Enterprise ... for testing the aforementioned GPS JUNO ST, as the accuracy quoted by the manufacturer is 1 to 5 m after post-process correction. Table 1. List of testi...

Ngày tải lên: 07/08/2014, 10:21

... 137144 â INRA, EDP Sciences, 2003 DOI: 10.1051/forest:2003006 Original article Analysis of log shape and internal knots in twenty Maritime pine (Pinus pinaster Ait.) stems based on visual scanning and ... sawing simulation. 5. CONCLUSIONS The use of visual scanning techniques and computer- aided reconstruction was applied for Maritime pines...

Ngày tải lên: 08/08/2014, 01:21

... nitrification in non-nitrifying soil, although mineralisation increased. Finally, Barg and Edmonds [4] found no change in mineralisation and nitrification rates after partial or total clear- cut, as ... containing an anion resin bag and six cylinders containing a cation resin bag were set up. Finally, at the beginning of October 1996, the quantity of resin in each cy...

Ngày tải lên: 08/08/2014, 01:21

... alleles in the clones and in the commercial seedlot Original article Mating system in a clonal Douglas fir (Pseudotsuga menziesii (Mirb) Franco) seed orchard. I. Gene diversity ... rare alleles are disadvantageous. The disadvantage of a rare allele is not nec- Erickson VJ, Adams WT (1989) Mating success in a coastal Dougl...

Ngày tải lên: 08/08/2014, 19:21

... Original article Mating system in a clonal Douglas fir (Pseudotsuga menziesii (Mirb) Franco) seed orchard. II. Effective pollen dispersal D Prat Laboratoire INRA-ENGREF de ... outcrossing rate and pollen contamina- tion in Picea abies seed orchard. Scand J For Res 8, 8-17 Prat D, Caquelard T (1995) Mating system in a clonal...

Ngày tải lên: 08/08/2014, 19:21

... (1991) [7] in oleoresin of P. pinea; the last seven acids in wood and bark by Hafizoglu (1989) [5], and the first six, in soil of a P. pinea forest and in plant material from this Pinus species ... 28%. The levels of these acids in trees 7 and 8 were very similar to those of abietic acid, the main resin acid. Lipophilic compounds in Pinus pinea L. 453 Table II...

Ngày tải lên: 09/08/2014, 04:20

... pmol quanta.m- 2’ s- 1 are slightly increased in treatments of 2 h at -2 and - 3°C, whereas in treatments at -4 and The increasing delay of the fluorescence decrease kinetics ... saturating light and C0 2 concentration (provided by a bicarbonate/car- bonate buffer, pH 8.7, giving rise to a C0 2 concentration of approximately 5%), using...

Ngày tải lên: 09/08/2014, 04:20