Báo cáo lâm nghiệp: "Annals of Forest Science” takes a step further to enhance its impact!" doc
Báo cáo lâm nghiệp: "Regeneration of forest stands on permanent research plots in the Krkonoše Mts" pdf
... regulates to a large extent quantity and character of the light penetrating into the heart Fig. 1. Natural, artificial and total regeneration in the Krkonoše National Park between 1980 and 2008 ... rowan(6%), Betula carpatica (3%) and sycamore maple (1%). Beech, Betula carpatica and sycamore maple were regenerated mainly artificially. Middle height of the upper storey is 22 m, stocking ... regeneration can be several: harsh mountain climate, extreme air-pollution, game damage, poor quality of nursery stock and insufficient care for plantations. Mainly low quality of outplanting that...
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Báo cáo lâm nghiệp: "Department of Forest Establishment and Silviculture, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic" pot
... are affected by decline and by yellowing of the assimilatory apparatus. Forest stands included in the analyses were aged 10–80 years and originated from both artificial and natural regeneration. ... RepublicABSTRACT: The paper summarizes results from the analyses of Norway spruce (Picea abies [L.] Karst.) stands man-aged by the Forest Administration in Horní Maršov, Krkonoše National Park (KRNAP), ... forest stands managed by Forest Ad-ministration in Horní Maršov, KRNAP. Our analy-ses included forest stands aged from 10 to 80 years originating from both artifi cial and natural regen-eration....
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Báo cáo lâm nghiệp: " Possibilities of using the portable falling weight deflectometer to measure the bearing capacity and compaction of forest soils" pptx
... etc. Its variability is not as high as that of Prima 100 because it has a standard weight of 10 kg, reaction base plates of 132 and 300 mm in diameter and a standard falling weight height of ... instrument was calibrated according to the size of the reaction base plate. e diameter of the reaction base plate was 132 mm and the calibra-tion module of elasticity was chosen to be E 160 as advised ... markedly a ect the total bearing capacity of soil. The measurement without litter appears to provide a more accurate determination of soil bearing capacity. e measurement of soil bearing capacity...
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Báo cáo lâm nghiệp: "Estimation of carbon stocks in a beech forest (Fougères Forest – W. France): extrapolation from the plots to the whole forest" pps
... analyses.2.5. Spatial analysis and cartography A carbon stock estimate was available at each sample point for thethree components (soil, humus and vegetation). The point data wereextrapolated to the ... likely to be integrated into future forest management plans and generalised in other contexts to evaluate carbon stocks at a regional scale. carbon stocks / forests / Fagus sylvatica / scale change ... whole forest, which coversan area of about 1660 ha, is dominantly beech (Fagus sylvatica L.)managed as even-aged high forest stands. It was classified as an Exper-imental Research Observatory...
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Báo cáo lâm nghiệp: "Attraction of the Japanese pine sawyer, Monochamus alternatus, to volatiles from stressed host in China" potx
... Statistical a nalysisQuantitative compositions of volatiles were calculated from peakareas using dodecane as the internal standard. The identification of the chemical constituents of each sample ... plant-finding behaviour of the Hessian fly, Physiol. Entomol. 18 (1993)31–42.[11]Ikeda T., Enda N., Yamade A. , Oda K., Toyoda T., Attractantsfor the Japanese pine sawyer, Monochamus alternatus ... in a 1:1:1:1:1 ratio also was attractive to M. alternatus (Tab. II). The trap catch with this blend wasnot significantly different from that of (+)-α-pinene alone. Theaddition of ethanol to a...
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Báo cáo lâm nghiệp: "Reduction of wood hygroscopicity and associated dimensional response by repeated humidity cycles" doc
... GARC A ESTEBAN a *, Joseph GRILb, Paloma DE PALACIOS DE PALACIOS a , Antonio GUINDEO CASASÚS a a Cátedra de Tecnolog a de la Madera, Departamento de Ingenier a Forestal, Escuela Técnica ... (Ce).From a total of ten trunks of each species, with an average length of 2.25 m, and an average diameter from 0.35 m to 0.65 m, ten slices of 50 mm thick were obtained from each. A first cut was made ... green following the radialand tangential cuts to a thickness of 1 mm using a laboratory roller.Finally, the veneers thus obtained were shorn to attain the final meas-urements of the test pieces...
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Báo cáo lâm nghiệp:"Influence of cotyledon removal on early seedling growth in Quercus robur L." doc
... treatment are shown in table I. The effect of the experimentaltreatments and the possible interaction between factors were analysedby a two–way analysis of variance for each treatment combinationand ... Growth, allocation and water relations of shade-grown Quercus rubra L. samplings exposed to a late-season canopy gap, Ann. Bot. 80 (1997) 335–344.[24] Oakwood M., Jurado E., Leishman M., Westoby ... Forestales, Servicio de Investigación Agroalimentaria, Gobierno de Aragón, Apdo, 727, 50.080 Zaragoza, Spain (Received 2 July 2001; accepted 7 February 2002)Abstract – The process of resource transfer...
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Báo cáo lâm nghiệp: "Diversity of ectomycorrhizal symbionts in a disturbed Pinus halepensis plantation in the Mediterranean region" ppt
... Information) [2]. Sequences of RFLP-taxa are available in the EMBL database. The relative abun-dance of ITS RFLP-taxa was calculated by dividing the number of ECM of each ITS RFLP-taxon by the total ... vulgaris and Rosmarinusofficinalis) and herbaceous plants (Lavandula latifolia, Sanguisorbaminor, Argyrolobium zanonii, Bituminaria bituminosa, Aphyllanthesmonspeliensis, Barlia robertiana, ... naturallyregenerated trees. A total of 461 single ectomycorrhizas was typed using PCR-RFLP analysis and sequencing of the internal transcribed spacer (ITS) of the nuclear rDNA. Twelve ITS RFLP-taxa were detected....
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Báo cáo lâm nghiệp: "Analysis of some dynamic series of forest production and trends of forest economics in the Czech Republic" ppt
... theoreti-cally calculated data or by the replacement of actual data with a mathematic function. In most cases, the adjustment is made by means of a linear function, and by means of an exponential, ... is to express the course of the vari-able (indicator) and the basic procedure to detect a trend is an analytical adjustment of time series, i.e. a substitution of actual data with a series of ... into social and economic aspects of sustainable forestry, particularly as far as the assess-ment of forest products and services is concerned with the aim to obtain reliable data for planning,...
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