Báo cáo lâm nghiệp: "Canopy fuel characteristics and potential crown fire behavior in Aleppo pine (Pinus halepensis Mill ) forests" pptx

... existing crown fire models can be found in Pastor et al. [60]. Aleppo pine canopy fuels and crown fire behavior 297 crown fires [76]. The CBD distribution in the fuel profiles of Aleppo pine stands indicate ... load distribution in uneven aged Aleppo pine stands. Aleppo pine canopy fuels and crown fire behavior 289 2.2.1. Cro wn fire initiatio...

Ngày tải lên: 07/08/2014, 16:20

... indicating that the cultivation protocol was ineffective in hastening maturity in this species. Regarding stone pine (Pinus pinea), the most striking fea- ture is the much higher degrees of allocational ... April 200 6) Abstract – Seedlings of four populations each of Pinus pinaster, P. halepensis, P. canariensis and P. pinea were grown in controlled conditions to evaluate bo...

Ngày tải lên: 07/08/2014, 16:20

... felling ( %) 1980 1996 2003 Fig. 2. Planned decennial percents of tending (thin line) and regeneration timber felling (thick line) of broadleaved tree species in age classes in 1980, 1996 and ... classes Proportion ( %) 1980 1996 2003 Fig. 1. Proportion of stand area (thin line) and growing stock (thick line) of broadleaved tree species in age classes in 1980, 1996 an...

Ngày tải lên: 07/08/2014, 03:22

... sampling points interpolated by Krigging using spherical and exponential models for the semivariogram (see details and r 2 in Tab. VI). The two zones of the plot (tree- and shrub-dominated zones) ... Holm oak woodland studied. Maps represent indirect site factor (ISF, A and C) and direct site factor (DSF, B and D) for either the shrub layer (A and B) or the herb layer (C and...

Ngày tải lên: 07/08/2014, 16:20

... sanitary cuttings in 2005 (higher than in 2004, but including also lying, infested trees), but also – in the volume of infested standing trees, which was lower than in 2004. e real increase in the ... (Special Issue): 38–44 In 2003 most (60 %) of the sanitary cuttings was done in the lower mountain zone – up to 800 m a.s.l., in the stands more attacked by Armillaria r...

Ngày tải lên: 07/08/2014, 03:22

... be found in the papers of J (200 5), S (200 6) and K (200 6). e soil description can be found in K (200 2) and Š (200 3). e thorough study in the beech stands at the ... (surface and ground) water significantly in uences, both in a positive and negative way, the processes of biomass production in individual constituents of all e...

Ngày tải lên: 07/08/2014, 03:22

... negative pointer years (Table 3). In the following period there is an increase in increments, with slight interruptions in 1996 and 2000. Another decrease was recorded starting in 2003 and this ... in uence the increments, most sig- nificantly at the highest mountain altitudes (Č 200 7). Mountain stands can be considerably damaged mainly during winter and at the b...

Ngày tải lên: 07/08/2014, 03:22

... inhibition of maize seed germination by flooding. Crop Science, 31: 1052–1057. MU-RP (Ministerium für Umwelt Rheinland-Pfalz, ed .), 1993. Der Einfluss des Oberrheinausbaus und der am Oberrhein ... tested in this work: – Seeds begin to germinate only after flooding. – Germination rate decreases as the duration of inundation increases. – Inundation during the vegetation period results in...

Ngày tải lên: 07/08/2014, 03:22

... deformation, rooting depth, rots Stand marking Stand situation Shoot height (cm) d 1.3 (mm) Root system type (% of trees) 2 Taproot (% of trees) Dominance Rooting depth (cm) Rots (% of trees) Deformation ... of stand situation 2 and 3, mutual comparison of stand situation 4 and 5) (Tables 1, 2, 3). Biomass, vitality and mycorrhizal infection of fine roots Fine root biomass...

Ngày tải lên: 07/08/2014, 04:20

... Czech Republic. The research included the wood of Norway spruce (Picea abies (L .) Karst .), Scots pine (Pinus sylvestris L .) and European larch (Larix decidua Mill. ). The juvenile wood density ... 37–43. (in Czech) H J.M. (196 5): A survey of wood density, tracheid length and latewood characteristics of radiata pine grown in New Zealand. New Zealand Fo...

Ngày tải lên: 07/08/2014, 10:21