Báo cáo lâm nghiệp: "Variability of spruce (Picea abies [L ] Karst ) compression strength with present reaction wood" pdf

... Variability of spruce (Picea abies [L. ] Karst. ) compression strength with present reaction wood V. G, H. V Faculty of Forestry and Wood Technology, Mendel University of Agriculture ... corresponds to the data for the compression wood of spruce (Picea abies) with 12% of moisture content published by G (200 2) and H e...

Ngày tải lên: 07/08/2014, 04:20

... the know- ledge of the properties of Norway spruce (Picea abies [L. ] Karst. ) wood with the presence of reac- tion wood. J. FOR. SCI., 53, 2007 ( 3): 129–137 133 e influence of the radius on ... the Ministry of Education, Youth and Sports of the Czech Republic, Project No. 6215648902. Variability in density of spruce (Picea abies [L. ] K...

Ngày tải lên: 07/08/2014, 03:22

... 34.9% (beech stand) to 41.3% (spruce stand), for humus layers L, F and H from 3.3% (spruce stand) to 4.0% (beech stand) in the organo-mineral horizon A h . e highest reserves of carbon and nitrogen ... 197 8). Comparing the present exchangeable pH with pH values measured, there occurred a decrease by about 10% (K 199 7). As for the division of soils according to the...

Ngày tải lên: 07/08/2014, 10:21

... without standards (C), cutting with standards (CR), young cop- pice without standards (R), young coppice with standards (RR), adult stand (P), agricultural area (A) and fallow land (F) – provided that they ... that of coppice with standards, with small-scale cutting operations and min- imal intervention. None of the owners had any contacts with the forestry office technicians, the...

Ngày tải lên: 07/08/2014, 16:20

... transpiration efficiency of peanuts (Arachis hypogea L), Aust. J. Plant. Physiol. 15 (198 8) 799-813. of growth, representative of the whole life- span of the seedlings? ii) measurements during ... correlated with the amount of rainfall in the geographical origin of provenances, the ranking of provenances was: [Gih] ≥ [Kon, Mor, Dos, Ma...

Ngày tải lên: 09/08/2014, 04:20

... =0.15-(0.95x10!x 0)+ (1.6x10! x Ir) (N= 542; r2 = 0.5 2). Late summer (data after the beginning of the dry period): gs = 0.08 - (0.34 x 10! x D) + (0.38 x 10- 4 x Ir ) (N = 111; ... & Whitehead D. (198 2) Systematic spatial varia- tion of stomatal conductance in a Sitka spruce plantation. J. Appl. EcoL 19, 835-851 Running S.W. (197...

Ngày tải lên: 09/08/2014, 04:20

... (Abies alba Mill .) was an important species for forestry in the last centuries. Due to the transition to clear-cut forest management giv- ing priority to Norway spruce (Picea abies [L. ] Karst. ), ... stands of the 7 th (spruce- beech) and 8 th (spruce) altitudinal vegetation zone were a criterion for sampling. For a comparison, the samples of the 6 th alti...

Ngày tải lên: 07/08/2014, 10:21

... press) Götsche-Kühn H (198 8) Bildung und Eigenschaften des Holzes von Fichten (Picea abies (L) Karst) aus Wald- schadensgebieten. [Formation and properties of Nor- way spruce ... Original article The growth of spruce (Picea abies (L) Karst) in the Krkonoše-(Giant) Mountains as indicated by ring width and wood density C ... 1....

Ngày tải lên: 08/08/2014, 19:21

... altitudinal zone (FAZ) (dominant associations of Calamagrostio villosae-Piceetum and Sphagno-Piceetum) (cf. C 1996; J, F-  199 2). Norway spruce (Picea abies [L. ] Karst. ) is the main ... 2005. Structure and func- tions of the types of Norway spruce (Picea abies [L. ] Karst. ) roots. Journal of Forest Science, 51: 305–3...

Ngày tải lên: 07/08/2014, 03:22

... of the Czech Republic, Research Programme No. MSM 6215648902, and the Ministry of Agriculture of the Czech Republic, Project QG 60060. Response of the Norway spruce (Picea abies [L. ] Karst. ) ... (cm) Honey fungus incidence (% of trees) Rots (% of trees) Max. angle between horizontal skeletal roots (degrees) Deformation into tangle (% of trees)...

Ngày tải lên: 07/08/2014, 03:22