Báo cáo lâm nghiệp: "Growth trends reveal the forest structure during Roman and Medieval times in Western Europe: a comparison between archaeological and actual oak ring series (Quercus robur and Quercus petraea)" pot

... Western Europe: a comparison between archaeological and actual oak ring series (Quercus robur and Quercus petraea)Kristof HANECA a *, Joris VAN ACKER a , Hans BEECKMANb a Ghent University, Department ... three archaeological sites in Flanders. N: number of tree -ring series. AV. No. TR, AV.RW and AV. STDEV: the average number of tree rings, the average ring width and the average standard deviation ... the average number of tree rings, the average ring width and the average standard deviation of the tree -ring series. MS and AC(1): the means sensitivity and the average first-order autocorrelation...

Báo cáo lâm nghiệp: "Short-term effects of fire on plant cover and soil conditions in two Austrocedrus chilensis (cypress) forests in Patagonia, Argentina" potx

... every 20 days during spring and summer and every three months during fall and win-ter. Temperature at the soil surface was measured between 14:00 and 14:30 h, and ST-5, ST-20, and ST-30 between ... temperate, with 75% of the annualprecipitation falling between April and September (late fall and winter in the Southern Hemisphere). Spring and summer are generally warm and dry [10]. Mean annual ... (b) the seasonal dynamics of temperature and moisture at various soil depths in these burned and adjacentunburned areas, and (c) how changes in plant cover and tem-perature and moisture in the...

Báo cáo lâm nghiệp: "Growth of hybrid poplars in silviculture at the age of 6 years" pps

... is the main goal of breeding research programmes (S et al. 2001). Many authors investigated anatomical and physi-ological characteristics, assuming that they have an important in ... wind 'CZ-257'P-535 P. angulata 'Törökfay' × nigra 'CZ-1047'P-540 P. angulata 'Törökfay' × nigra 'CZ-919'P-608 P. angulata 'Törökfay' ... 'CZ-245/58'P-740 P. angulata 'Törökfay' × nigra 'CZ-390'P-755 P. angulata 'Törökfay' × nigra 'CZ-352'P-756 P. angulata 'Törökfay' × nigra 'CZ-846'P-788...

Báo cáo lâm nghiệp:"Growth and biomass partitioning of Fagus sylvatica L. and Quercus robur L. seedlings in response to shading and small changes in the R/FR-ratio of radiation" pot

... experiment at my disposal and for theirassistance in constructing the wooden frames of the nets and measuring the seedlings. I also thank K. Thoroe for measuring the drymasses of the harvested seedlings ... 10.1051 /forest: 2003009Original articleGrowth and biomass partitioning of Fagus sylvatica L. and Quercus robur L. seedlings in response to shading and small changes in the R/FR-ratio of radiationChristian ... figure 3b and 3c). The significant interaction between the variables Z1 and Z2for RHG and RGDS in the second part of the growing periodas well as in the total period indicates that the differencebetween...

Báo cáo lâm nghiệp: "Growth and nutrition of container-grown ponderosa pine seedlings with controlled-release fertilizer incorporated in the root plug" docx

... 1,1996), these seedlings were then cut at the root collar, and the root sys-tem was extracted from the container and hand washed. The shoot wasseparated into needles and stem. The needle, stem and ... For example, with the medium application rate the variation in diameter, height and total mass between FR, MR and SR was much smaller than thatwith the low and high application rates (Tab. II). ... root-collar diameter (mm) or height(cm) for replicate i, X is the application rate, a 0, a 1 and a 2 are the regression parameters, and εi is the random error. The esti-mated application rate associated...

Báo cáo lâm nghiệp: "Ecological conditions influencing the localization of egg-laying by females of the cockchafer (Melolontha hippocastani F.)" pps

... of mass swarming of M. hip-pocastani in the Vracov locality, we recorded and evaluated the daily maximal, minimal and average temperatures using an automatic meteorological station of the ... regions. In the 3-year developmental cy-cle the ﬁrst moulting takes place as soon as in the year of hatching and already in the advanced sec-ond stage the larvae winter. In the 4-year develop-mental ... caused by white grub feeding and the relation between the extent of the damage and the individual characteristics of the experimental plots. e relation between the extent of the damage and the...

Báo cáo lâm nghiệp: "Occurrence of Ips duplicatus (Coleoptera: Curculionidae, Scolytinae) on pines (Pinus sp.) in the Czech Republic and southern Poland – Short Communication" pdf

... communication). These infestations vary in time and place, but they are generally spatially related with actual outbreak areas, where beetles subsequently attack even pine due to the host plant ... consequently infested by I. duplicatus during summer (July–September 2007); a similar pattern could be applied to the findings in Poland, next to the outbreak area (G 1997). The incidental infestations ... species was detected in the whole area between the Silesian Upland in the west and Gorce in the east, up to 1,000 m a. s.l.; sporadic ﬁndings were recorded also in the Western Sudeten (G...

Báo cáo lâm nghiệp: " Growth of wild cherry (Prunus avium L.) in a mixture with other species in a demonstration forest" ppsx

... et al. 1998).e purpose of the contribution is to evaluate the stand-forming capacity of wild cherry as well as its capacity to keep its position in a stand.MATERIAL AND METHODS A large stand ... as a stand-forming species in the area of Demonstration Forests in Kostelec nad Černými lesy in the mixture with other species was found. e stand 3 9A5 is located at 49°57'28''N ... (vertically and horizontally) and tree class evaluation (according to Konšel’s classiﬁcation). e stand is at an altitude of about 350 m above sea level; its age is 59 years now. e stand grows...

Báo cáo lâm nghiệp: "Rodent-caused damage to forest trees from the viewpoint of forestry practice" potx

... ashmaple oak limelarchfirgoat willowpinespruceArea (%)Tree speciesrepeated reforestation (% stands)damage (% stands)repeated reforestation (% stands)damage (% stands)repeated reforestation (% stands)damage ... period; and also long-lasting snow cover. e current approach of forestry practice to damage by small mammals is considerably passive and we are missing an alert system of threat to stands and a methodology ... with certainty as signiﬁcant damage may appear perhaps in a small part of the threatened plantations where the key conditions for small mammals have been fulﬁlled. e main factors which a ected...

Báo cáo lâm nghiệp: "Different technologies of floodplain forest regeneration from the aspect of soil changes" pot

... borne in mind when discussing silvicultural treatments in a pedunculate oak stand and their in uence on the relations in the stand, and especially in the soil.e type and intensity of the changes ... the possibility of water trans-port, and are suitable for agriculture and pasturage in particular. Forest stands were gradually cleared and converted to meadows and pastures as early as in ... ﬂoodplain forest stands occur during their regeneration. ese changes are manifested as changes in the content and dynamics of organic matter in the soil. Research was conducted in oak and ash...

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