Báo cáo lâm nghiệp: "Harvest scheduling with spatial aggrega

Báo cáo lâm nghiệp: "Harvest scheduling with spatial aggregation for two and three strip cut system under shelterwood management" docx

... R 6 R R R – removal cut; P – preparatory cut J. FOR. SCI., 57, 2011 (6): 271–277 271 Harvest scheduling with spatial aggregation for two and three strip cut system under shelterwood management M. ... adjacent strips within the re- generation period of 30 years. e three- cut shelterwood system consists of a preparatory, establishment, and removal cut....

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: " Fungi associated with Tomicus piniperda in Poland and assessment of their virulence using Scots pine seedlings" doc

... sylvestris L.) is the most important forest tree species in East-Central Europe. In Poland, forest stands with Scots pine dominance occupy 68% of the total forest area [47]. The larger pine shoot ... Felled trees were laid ﬂat on the forest ﬂoor and left for colo- nization by T. piniperda. The main attacks started the 10th of March 2005 and continued for the next three weeks. Samp...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Wedge prism as a tool for diameter and distance measurement" ppsx

... values and their differences Diameter measured optically with wedge prism Diameter measured with calliper Difference Standard deviation of differences In “laboratory” 33.95 34.24 –0.29 0.88 In forest ... also appropriate for the sorting in standing trees. For sorting one needs to know the diameter in the small end of logs. According to the Recommended Rules for Log Measuring and...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Relationships between the parameters of aboveground parts and the parameters of root plates in Norway spruce with respect to soil drainage" docx

... spruce trees between the waterlogged and the well-drained sites. In waterlogged sites, the mean value for dbh was 32 cm, for d 0.2 41 cm, for d 0.0 50 cm, and for tree height it was 22.8 m. ... In this locality, the mean value for dbh was 42 cm, for d 0.2 55 cm, for d 0.0 77 cm, and for tree height it was 31.5 m. Higher mean values of crown width and crown...

Ngày tải lên : 07/08/2014, 10:22

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Báo cáo lâm nghiệp: "Eﬀect of species composition, stand density and site index on the basal area increment of oak trees (Quercus sp.) in mixed stands with beech (Fagus sylvatica L.) in northern France" potx

... artiﬁcial forest ecosystems and their interference by forest measures, Allg. Forst-Jagdztg 39 (1988) 1064–1068 (in German with English summary). [58] Thomasius H., Stability of natural and artiﬁcial forest ... mixed-species stands of oak and beech. The aim of the study was to adapt one of the basic equations of the French growth simulator Fagacées for oak stands to mixed stands wit...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "The influence of irradiation on the behaviour and reproduction success of eight toothed bark beetle Ips typographus (Coleoptera: Scolytidae)" doc

... acceptance for some key insect pests (T 2000). e case for an area-wide IPM approach arises for these key pests as they cannot be eﬀectively controlled at the local forest level without the systematic ... isolation of translocations and their implication for population dynamics. Forstliche Schriftenreibe. Ed.: Austri- an Society for Forest Ecosystem Research and Experimen...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Comparison of the impact of blue spruce and reed Calamagrostis villosa on forest soil chemical properties" pot

... (T) and higher content of exchangeable bases (S) under reed. We found very similar forest-ﬂoor humus properties under both species. erefore we can not state worsening of the soil conditions under ... last- ing cover of blue spruce, and clear -cut reed Calama- grostis villosa on the former Norway spruce clear -cut to the upper soil layers quality and quantity. MATERIALS AND...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Characteristics of 3rd (Querci-fageta s. lat.) and 4th (Fageta (abietis) s. lat.) vegetation tiers of north-eastern Moravia and Silesia (Czech Republic)" pps

... 1971). e term will be useful for an easier marking of this VT and also for an easier understanding of the forest-typological classiﬁcation system. CONCLUSION AND SUMMARY Vegetation tiers represent ... or P vegetation bands. Individually, species occur of three vegetation bands FA (P, LPC) or of two bands LPC, P. Character of ecotope 4 th VT occupies places of the uplands...

Ngày tải lên : 07/08/2014, 04:20

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Báo cáo lâm nghiệp: "Eﬀects of microsite variation on growth and adaptive traits in a beech provenance trial." pps

... Grosshansdorf with 32 provenances, established under a randomized complete block design with three adjacent blocks. Five indicators of soil properties (soil moisture, bulk density and pH) and microclimate ... microsite J. FOR. SCI., 57, 2011 (5): 192–199 199 variation between and within provenances. Forest Ecology and Management, 174: 233–249. P Y. (1996): VARIOWIN...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Analysis of the aerial application of fertilizer and dolomitic limestone" docx

... 2008; Table 1). On the basis of soil and needle analyses, two of them were proposed for liming with ﬁne-ground dolomitic limestone and three for fertilizing with multiple liquid foliar fertiliz- ers. ... technologies. MATERIAL AND METHODS Five forest areas were selected for our experiment in which revitalization treatments (in the framework of the revitalization project...

Ngày tải lên : 07/08/2014, 10:21

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