Báo cáo lâm nghiệp: "Analysis of the production potential of raw wood in the forests of Slovakia" pps

... Categories of forest roads are the conjoint class mark for the forest roads of the same value in terms of forest operation. e value of for- est road indicates the importance of forest road for wood ... gives information about the length of roads and the area, but it does not predicate the spacing of roads. After all, the efficiency of the network woul...

Ngày tải lên: 07/08/2014, 10:21

... suggesting that the variables were less sensitive to the effects of the environment above a certain threshold of light intensity. The increase in N a resulted more from the increase in LMA than in N m ... that the trees grow- ing in the clearing displayed a shorter phase of installation than the trees in the understorey. This further indicates that light co...

Ngày tải lên: 08/08/2014, 00:22

... grazing or wood harvesting. This resulted in the increase of the amount of fuel available for burning [61]. Aleppo pine (Pinus halepensis Mill.) forests cover approxi- mately 2 500 000 ha in the ... was initially in the standing position of the trees. Table I presents descriptive statistics of the sampled trees used in the analysis. After weighing the avail...

Ngày tải lên: 07/08/2014, 16:20

... detecting the loss of vigour experienced in some of the stocklots used (Fa). These results could explain the scarcity of correlations obtained between them and the RGP values, as observed in other ... predictors of field perfor- mance potential. These are usually made at the beginning of the planting season, in October, and are expected to be valid thereafter for...

Ngày tải lên: 07/08/2014, 16:21

... the fact that the use of production potentials of the forest and forest wood- producing functions is to be further restricted in future. For example, in connec- tion with the application of ... increments), mean coefficient of growth, etc. Mean coefficient of growth (k) is in principle constructed as the n – 1 root of the series marginal links, or of the t...

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

... 4., the snow melting was reduced at very low air tem- peratures or quite interrupted in the open area. In the final stage of melting in the last decade of April, the snow melting rate in spruce ... However, from the aspect of the water-management effectiveness of forests, the period of spring melt- ing is of decisive importance. us, in the course of...

Ngày tải lên: 07/08/2014, 04:20

... result in an overapplication of lime in 9% to 12% of the field and an underapplication on 37% to 41% of the field. When analyzing older cases, one of the main findings is that the variability of the ... decline of these stands can be the lack of nutrients contained in soil environment as well as in needles. One of the possible ways of revitalization...

Ngày tải lên: 07/08/2014, 10:21

... northeast of Brno, on the southern border of the for- est ground belonging to the Křtiny Training Forest Enterprise (Fig. 2). e measurement in area A was tested at 9 points of known coordinates ... points and points located in the space especially for this purpose (Table 1). e stabilization accuracy of the tested points was determined by the mean coor- dinate er...

Ngày tải lên: 07/08/2014, 10:21

... Douglas fir production capac- ity in the area of the Training Forest Enterprise Hůrky of the Forest High School in Písek. In: Proceedings Role of the Forest Stabilisation in Biotops Disturbed by Human ... natural regeneration under the parent stand in the area of the Training Forest Enterprise in Kostelec nad Černými lesy after the suppression of weed...

Ngày tải lên: 07/08/2014, 03:22