Báo cáo lâm nghiệp: "Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L ] Karst ) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions" ppsx

... Norway spruce (Picea abies [L. ] Karst. ) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in diff erent gradation conditions E. K 1 , W. Z 2 1 Faculty of Forestry ... cambioxylophagous insect fauna of Norway spruce (Picea abies [L. ] Karst. ) was carried out in spruce s...

Ngày tải lên: 07/08/2014, 10:21

... 55, 2009 (1 2): 556–566 557 environmental conditions. In fact, only a few studies have been conducted on this problem, for instance comparing Norway spruce (Picea abies [L. ] Karst. ) and European ... (5 3) ab 249 (4 2) a 83 (2 2) a 81 (3 0) a 95 (2 9) a 86 (2 7) a 39 (1 4) a 27 (1 0) a 27. 7. 450 (7 2) ab 260 (5 0) a 92 (2...

Ngày tải lên: 07/08/2014, 10:22

... spermidine and spermine in the Norway spruce embryogenic culture growing on proliferation (4 weeks) and maturation (2 weeks) media, in mature somatic embryos (5 weeks on maturation medium) and in embryos ... the method of somatic embryogenesis in a less respon- sive hurst ecotype of Norway spruce. Contents of free polyamines (putrescine, spermi- dine, and s...

Ngày tải lên: 07/08/2014, 10:21

... domi- nance of Norway spruce 67.8 %) (C 199 6). e Norway spruce dominates in both studied re- gions, however other tree species as larch (Larix sp .), beech (Fagus sp .), pine (Pinus sp .), oak ... Hemero- bius pini (Figs. 1a,b) began to appear in the mid of April. e occurrence increases at the end of May what corresponds with the observation of H...

Ngày tải lên: 07/08/2014, 03:22

... F-  199 2). Norway spruce (Picea abies [L. ] Karst. ) is the main edificator and stand-forming tree species in mountain spruces stands of Central Europe. e timberline is running quite near ... observed on an example of natural spruce stand (NSS), semi-natural spruce stand (SNSS) and allochthonous spruce stand (ASS) in conditions of...

Ngày tải lên: 07/08/2014, 03:22

... the following common features: declining trees are present in all age classes and one stand includes healthy and injured trees growing side by side (in Moravec even dead standing trees). e ... incidence (% of trees) Rots (% of trees) Max. angle between horizontal skeletal roots (degrees) Deformation into tangle (% of trees) Index p Rooting depth (cm) Whole root sy...

Ngày tải lên: 07/08/2014, 03:22

... (Reconstruction of stands Underplanting birch) Exponenciální (Inspection Bohemian - Moravian upland) Exponential (Underplanting of present stands spruce) Exponential (Reconstruction of stands underplanting ... underplanting birch) Exponential (Inspection Bohemian-Moravian Upland) Linear (Underplanting of present stands spruce) Linear (Reconstruction of stands underplanting birch...

Ngày tải lên: 07/08/2014, 03:22

... humifi cation (H), organomineral (Ae, Ep) and spodic horizons (Bs, Bv). For a more detailed and objective evaluation of the Norway spruce (Picea abies [L. ] Karst. ) rhizosphere envi- ronment the ... B., G A. (199 3): Eff ects of drought on the yellowing status and the dynamics of mineral elements in the xylem sap of declining spruce (Picea...

Ngày tải lên: 07/08/2014, 10:21

... regionalization of Poland (T et al. 199 0), the area of the present research is located in Carpathian Region Stability of Norway spruce (Picea abies [L. ] Karst. ) stands in the Beskid Śląski and ... in the stands which are highly threatened with disintegra- tion (STH) (Table 4). SUMMARIZATION AND CONCLUSIONS e degree of threat to sp...

Ngày tải lên: 07/08/2014, 10:21

... initial height of seedlings on the growth of planting material of Norway spruce (Picea abies [L. ] Karst. ) in mountain conditions A. J, J. L, J. M Forestry and Game Management ... (Picea abies [L. ] Karst. ) are connected with the risk of undesirable narrowing of the genetic spectrum of populations. Investigatio...

Ngày tải lên: 07/08/2014, 10:21