Báo cáo lâm nghiệp: " Dynamics of tree species composition and characteristics of available space utilization in the natural forest of the National Nature Reserve Hrončokovský Grúň" pot

... periodically. e utilization of productive growth space of the virgin forest by particular tree species and the share of the tree species in the total crown canopy in tree layers were calculated according ... mechanism, the trees of the previous generation are dying off, including fir. Dynamics of diameter structure in natural forest To exp...

Ngày tải lên: 07/08/2014, 10:22

... rutting and forest floor removal was evaluated on a skid trail in the natural forest of north of Iran. Combination of two levels of slope < 20% (SC1) and > 20% (SC2) and three levels of ... of the machine are lim- ited and accrued rutting and mixing of mineral soil with litter mass by the track grouser of this machine type. However, the large...

Ngày tải lên: 07/08/2014, 03:22

... since beech represents 99.2% of the canopy individuals in the plots of the study, regardless of the existence of patches of other species in the surroundings of the area. e total number of ... 2007 and emerged at the border of the stands. In 2009, these species represented 2.6% of the total woody regeneration in the four PRP’s. is conc...

Ngày tải lên: 07/08/2014, 10:22

... the amount of K uptake by stands and originating from litterfall increased from 13 to 39% from the 20- to the 60-year-old stand. The contribution of litterfall to the stand nutrient uptake increased ... capable of estimating the mean residence time of C and elements in the forest floor [14, 35]. These calculations presupposed that the forest floor was in a...

Ngày tải lên: 08/08/2014, 01:21

... A-B-C, °) AVEIN: mean of the vein angles of the six largest lobes (e.g. K-G-D, °) ASIN: mean of the sinus angles of the six largest lobes (e.g. I-J-K, °) ALOB: mean of the angles of the six largest ... Distribution of the 221 leaves according to the average angle of auricles at the lamina base (AURI) and the lamina pilosity density (LPD). The diagonal s...

Ngày tải lên: 08/08/2014, 01:22

... of the line sensor was randomly changed every week among permanent growth plots of the 4 clones. Results Light interception of the clones increased throughout the growing ... the highest value occurring in clone 11-11 (0.8 g-MJ- 1) and the lowest in 111-5 (0.4 g’ MJ- 1 ). ). Dynamics of light interception, leaf area and biomass produ...

Ngày tải lên: 09/08/2014, 04:20

... MMD a decreased within the first half of a tree- ring; then it reached a plateau, and remained constant in the second half of the tree- ring (Fig. 2B). Correlations were high between the different morphomet- ric ... observed in this study that cell-wall surface and also cell-wall thickness slightly decrease at the beginning and at the end of a tree- ring. Cell-wal...

Ngày tải lên: 07/08/2014, 16:20

... reduction from the base to the uppermost part of the tree and an increasing degree of sexualization. Sexuality is characterised by terminal inflorescences. The organisation of inflorescences and vegetative ... dimensions The number of nodes and the internode length per GU increased significantly in understorey and clearing trees, until a threshold value corresp...

Ngày tải lên: 08/08/2014, 00:22

... (Carpinus betulus), and others (e.g. [42, 70]). This is reflected by the frequency of tree species (incl. spontaneous tree rejuvenation). In the stands of the Cladonio- Pinetum, Ledo-Pinetum, and ... DISCUSSION 5.1. Few non-indigenous species in the forests With only about 5% of the total species pool of the analysed data set, the number of recorded n...

Ngày tải lên: 08/08/2014, 00:22

... M.P., The formation of dry zones in the sapwood of conifers. I. Induction of drying in standing trees and logs by Fomes annosus and extracts of infected wood, Eur. J. ... number of inoculation points, as a large increase of blue stain- ing was observed in the sapwood with an increasing amount of inoculation points, at a density...

Ngày tải lên: 09/08/2014, 04:20