Báo cáo lâm nghiệp: "A pheasantry as the habitat of small terrestrial mammals (Rodentia, Insectivora) in southern Moravia (Czech Republic)" doc

... study of the synusiae of small terrestrial mammals of pheasantries in southern Moravia is therefore aimed at monitoring the effect of specific properties of these habitats (high diversity of biotopes, ... Moreover, in the region of southern Moravia, pheasantries represent isolated areas of woody vegetation in the middle of intensive-ly managed landscape. In addition to intensive game keeping, they ... fall was probably caused by changes in the water regime in floodplain forests after 1972 (Z 1991). e general decrease of Soricidae in southern Moravia during the last 40 years was obvi-ously...

Báo cáo lâm nghiệp: " A contribution to the properties of combined plywood materials" ppsx

... than the sum of the values of their parts (H, K 2005). At the end of the 70s and at the begin-ning of the 80s of the 20th century, the principle of plywood allowed the origin of OSB ... F2 40% of maximal loading, a2 – a1 – increase in the deﬂection of the sample at the point of load force (mm), adequate to loading increment (F2 – F1).e modulus of elasticity of each ... the loading of a sample that is suspended on two supports whereas the sin-gle loading interacts in the middle of sample (Figs. 4 and 5).During the test the width and thickness of the sample,...

Báo cáo lâm nghiệp: "A contribution to the resistance of combined plywood materials to abrasion" potx

... frequency of the sanding paper replacement is Table 1. e initial and final point of abrasion in samples without glass fibresSampleInitial point of abrasion (rpm)Final point of abrasion (rpm)Mean ... affecting abrasion. If the ply is not prepared well, the connection of a veneer with a foil is imper-fect after gluing the foil. It results in a decrease of the initial point of abrasion when the ... comparison of the values of abrasion resistance in FINNFOREST plywoods.Fig. 3 illustrates the initial and final points of abrasion in samples without glass fibres.Fig. 4 illustrates the initial...

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

... (BAI)instead of the ring width. The basal area is defined as the area of the cross-section of a tree stem near the base, generally measured at breastheight. The BAI is then defined as the increase ... timber. In order to secure a sustainable source of firewood, the structure of the remaining forests was often altered. Especially coppice of European oak became increasingly popular during the Roman ... timber. Foroak, the density is mainly controlled by the cambial age and the ring width [33]. The amount of the denser latewood willincrease when the total ring width increases. According torecent...

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

... total number of the entire period of swarming; in this time interval intensive egg laying into the soil could be assumed.Basing on records of daily temperatures meas-ured using the automatic ... explored the ecological conditions, which in uence the female Melolontha hippocastani F. in their selection of the locality for laying eggs. In the region of mass outbreak of M. hippocastani in the ... on the eﬀect of aerial interventions in 2003 on an area of 508 ha against the beetles at the time of swarming were not evincible. In 2003 when the M. hippocastani females laid their eggs the...

Báo cáo lâm nghiệp: "A decision support system to simulate and compare silvicultural scenarios for pure even-aged larch stands" doc

... the stand (in m), c is the individual girth at 1.3 m (in cm), H50 is the siteindex of the stand (in m), and Age is the age of the stand (in years).This model was built from data collected in 99 ... address the multi-faceted nature of management questions. Considering the in- creasing complexity of new challenges in forestry they arevery useful in a wide range of ﬁelds, especially in sustain-able ... predictionbased on initial stand density, thinning regime and site in- dex (scenario building), (ii) assessment of a set of indicatorsdeﬁning scenarios, and (iii) comparison of scenarios accord-ing...

Báo cáo lâm nghiệp: "Stand structure, competition and growth of Scots pine (Pinus sylvestris L.) in a Mediterranean mountainous environment" pptx

... relationship was found betweenCDI5 and LM indices in the plantation, as a result of thinningduring the last 10 years in this stand. In contrast, competition in uenced Scots pine stem growth in other ... minimum. The measurement of these variables wasrestricted to Scots pine. Sample size for these variables was inferredassuming a sampling error of less than 9% as an objective, leading toa sampling ... bydeducing the mean age of the dominant trees from their wood coresand assuming that Scots pine frequently grows in clumps or copses of about 200 m2up to the age of 60 years or even more. These...

Báo cáo lâm nghiệp:"Water relations and hydraulic characteristics of three woody species co-occurring in the same habitat" pptx

... Because Rroot as derived on the basis of equation 6 includes the resistance of the soil-to-root pathway,it is possible that the measured Rroot was due to the increase of Rsoil. In turn, Rsoil ... recovery of the hydraulic efficiency of the shoot i.e. xylemrefilling and stomatal re-opening, is likely to require lessmetabolic investment by the plant than that of the root at least in the case ... 3 and 4 show that the minimum diurnal YLvalues were either promptly recovered or maintained during the warmest hours of the day. In this last case, the total“pressure” acting on plant metabolism...

Báo cáo lâm nghiệp: "An approach for the analysis of vegetation spectra using non-linear mixed modeling of truncated power spectra" pdf

... to point estimation, hypothesis testing, and classi-fication of objects based on their reflectance spectra is needed. In addition to minimizing problems of data mining and colin-earity, the ... to the variance of a spectra. The choice of r–1 degrees of freedom in the numerator of the F-ratio test instead of 2 was adoptedto keep the experiment-wide error rate at 0.05 or better [38]. The number ... variance-covariance matrix of the fixed parameter vector. The probability of obtaining a larger T2 under the null hypothesis of equal-ity was obtained from the Hotelling distribution function of .Multivariate...

Báo cáo lâm nghiệp: "phytotoxic solutions on the respiration of mycorrhizal and non-mycorrhizal spruce roots (Picea abies L. Karst.) Effect of" pot

... on the young plants. This interactionwas demonstrated in the laboratory bymeasuring the respiration of excisedspruce roots.Using oxygen consumption as an indi-cator of ... (Hansatech Ltd.)This was used to follow the kinetics of oxygenconsumption by excised roots in a liquid The next stage in these studies is the investigation of the microcosm (cell ... were obtained byadding a mixture of the humuses obtained from the 2 stations to the vermiculite substratum. The plants were grown in a greenhouse for 16 6mo. The mycorrhiza...

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