Báo cáo lâm nghiệp: "Quantity and distribution of fine root biomass in the intermediate stage of beech virgin forest Badínsky prales" potx

... horizons rather by the reduction of the finest root length than by the reduction of root tips density. CONCLUSIONS The research of fine roots in the intermediate stage of a beech virgin forest ... cells with the dominant function of water and minerals supply. e ratio between the fine root length and the number of root tips is an indicator...

Ngày tải lên: 07/08/2014, 10:22

... frame, the height of individuals in the main layer (they are not visibly dominant, nor are they suppressed) and finally the thickness of the root collar to the nearest 0.1 mm. In the case of “Telc” ... it was the height and thickness of the root collar of sample regenerated individuals selected from within the fencing and outside of it. e basic...

Ngày tải lên: 07/08/2014, 10:21

... for the development of growth and stand dynamics models of the boreal mixed woods of Canada. Among other things, they stress the importance of explicitly taking into account the spatial distribution ... difference in skewness in basal area distribution of jack pine between pure jack pine stands and stands composed of a mixture of jack pine and either of w...

Ngày tải lên: 08/08/2014, 01:21

... between the 50- and the 81-year-old stages. The biomass is mainly stored in the trunk, then the branches and then the roots (Fig. 1). Throughout the time sequence, the contributions by the trunk, branches ... that of aerial wood left on the ground: 52 t/ha, and that of the remaining roots left in the soil: 65 t/ha. The future or the percentage dist...

Ngày tải lên: 08/08/2014, 01:22

... 285 etc., and their combination, which means that the category of game damage is the sum of damage types investigated during National Forests Inventory ac- cording to its methodology. In the investigated ... nature from the investigation of Na- tional Forest Inventory. In Saxony, the other method has successfully been applied. It is presented in the regulations...

Ngày tải lên: 07/08/2014, 03:22

... lower after 30 days than in the leaves of plants left in the shade and in control seedlings growing in the gap. Photoinhibition in beech seedlings grown in the shade and transferred to full ... seedlings growing in the open area, higher values in the gap and the highest values in seedlings growing under shelterwood, ex- plained these diff erences b...

Ngày tải lên: 07/08/2014, 10:21

... dynamics of beech, mixed (fi r beech and spruce beech stands) and spruce stands, relict pine woods and stands in the ecotone of the upper forest limit in diff erent site, stand, air-pollution and ... (2006): Modelling the structure and development of forest stands using the growth simulator SIBYLA. In: V S. (ed.): Increasing the Ratio of Close-t...

Ngày tải lên: 07/08/2014, 10:21

... (without the ending and often extended hairs), metatarsal length (LTp) from the calcaneal joint to the tip of the hoof, ear length (LA) from the root of the ear to the tip, and height at the withers ... suggest the opinion, that in Doupov region can absent the dominate female. But on the other side, many of sudies describe the absence of adult male...

Ngày tải lên: 07/08/2014, 10:21

... the seedling types of pine was almost 20% in autumn and even 42% in spring outplanting. However, es- pecially the comparison of bareroot and container- ized spruce and pine seedlings in this ... per cent of containerized and 75% of bareroot seedlings (most – 89% of bareroot spruce, least – 59% of bareroot pine seedlings) survived after the first growing seaso...

Ngày tải lên: 07/08/2014, 10:21

... the production and cost of other harvesting machines or systems used in the region and will be helpful for the loggers in selecting an appropriate system under certain stand and harvest circumstances. e ... initial costs of mechanized harvesting machines, larger diameters and crowns of hardwoods, and the relatively steep terrain in Caspian forests, manual f...

Ngày tải lên: 07/08/2014, 10:21