Báo cáo lâm nghiệp: "Variables influencing cork thickness in spanish cork oak forests: A modelling approach" docx

... plot basal area under cork; g max : maximum basal area under cork; g dom : domi- nant basal area under cork; apb: area proportional to tree basal area; BAL: mean basal area of the trees larger than ith ... variance associated with increasing classes of canopy cover, basal area and mean squared diam- eter and decreasing classes of stand density. This indicates that within plot tree variabil...

Ngày tải lên: 07/08/2014, 16:20

... that after autoclaving agar in flasks was at various degrees of liquidity. is was apparently interrupted by hydrolysis. Methods for propagation were compared statisti- cally and an evidential ... Plantlets can sink into sand partly and contact with medium is ideal. 4. Acidity stays at the same pH after autoclaving and no poisonous sulphuric ions occur in the flask. 5. Sand cannot absor...

Ngày tải lên: 07/08/2014, 03:22

... plots are a part of forest com- partment 20B9. Generative bare-root plants were used as a planting stock. e plants were set out manually into 30 by 30 cm sockets at a 1m spacing. Regular care ... been a long tradition in the Czech stand- ards to fix up the necessary quantitative and quali- tative parameters for seedlings and plants planted out. However, until the last Czech stan...

Ngày tải lên: 07/08/2014, 03:22

... 139–148 Poststratification is well known as a means of increasing the precision of estimates in unstratified sampling by incorporating additional information about strata weights in the final estimator. In ... variance of estimates based on systematic poststratified sam- pling because appropriate stratification can remark- ably reduce trends in the underlying spatial data. Systemati...

Ngày tải lên: 07/08/2014, 03:22

... located in the stand of Norway spruce (Picea abies) of total area 3.98 ha, the plot area is 0.191 ha. e third plot is situated in the birch stand (Betula verrucosa) of total area 0.7 ha, the measured ... was found in the Douglas fir stand and especially in the pine one. Interspecific demands of particular tree species are probably demonstrated in this way, as well as the inheri...

Ngày tải lên: 07/08/2014, 03:22

... METHODS Babia hora is an isolated mountain massif be- longing to the outer Western Carpathian mountain range situated in the northern part of Slovakia at the border with Poland. e massif of Babia ... Standard error; S standardized for an average of a covariate variable elevation equal to 1,352.7 m a. s.l.; W weighted average classes in the stage of growth (Fig. 3a) , the carbon s...

Ngày tải lên: 07/08/2014, 10:21

... It was sown within Truba facilities. According to 2009 observation, this seed lot did not germinate at all. A rather small amount of the open pollinated material was again granted to somatic ... Abies grandis). K-  and C (1971) used Abies cephalonica as a mother tree.  e application of A. cilicica, A. alba and A. nordmanniana resulted in 14% of germi- nating seedlings...

Ngày tải lên: 07/08/2014, 10:21

... successional forests, successional stage was considered as a fixed factor and volume of CWD was analyzed as a response variable using one-way analysis of variance (ANOVA). If there was a significant ... or Carpineto-Fagetum) prevail. Here Fagus orientalis and Carpinus betulus are the dominant species, while Acer velutinum, A. cappa- docicum, Tilia platyphyllos, Ulmus minor, U. glabr...

Ngày tải lên: 07/08/2014, 10:21

... which allows interactions with anionic macromolecules such as DNA, RNA and with negative groups of membranes. ree commonly occurring PAs in plants are di- amine putrescine (Put), triamine spermidine ... K.D., MINOCHA S.C., 1999. Polyamine levels during the devel- opment of zygotic and somatic embryos of Pinus radiata. Physiologia Plantarum, 105: 155–164. NAKAGAWA R., OGITA S., KUBO T....

Ngày tải lên: 07/08/2014, 10:21

... 39–48. [14] Garc a- Oliva F., Camou A. , Maass J.M., El clima de la Región Central de la costa del Pacífico Mexicano, in: Noguera F .A. , Vega J.H., Garc a- Aldrete A. N., Quesada M. (Eds.), Historia Natural ... 1–60. [28] Martín A. , Gallardo J.F., Santa Regina I., Interaction between litter and soil epidons in forest ecosystems of the “Sierra de Gata” moun- tains, province of Salamanca...

Ngày tải lên: 07/08/2014, 16:20