Báo cáo lâm nghiệp: "Winter moisture content and frost-crack occurrence in oak trees (Quercus petraea Liebl and Q robur L )" ppt
Báo cáo lâm nghiệp: "Composition of psocid taxocenoses (Insecta: Psocoptera) in Fageti-Piceeta s. lat. and Piceeta s. lat. forests in the Western Carpathian Mts" pps
... sweepings or beatings were carried out in each locality. Caught psocids were sucked into the exhauster and stored in a small test tube with 70% alcohol. All samples were collected and determined ... occurring in the 7th AVZ, are missing in the lower and middle altitudinal veg-etation zones.Taxocenosis of the 8th (Piceeta s. lat.) altitudinal vegetation zoneEudominant species Caecilius ... geobiocenological or forest typological systems in zoocenological studies.“Mountain spruce forest” is a commonly used term, but its definition is usually not very clear and well understood. It is possible...
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Báo cáo lâm nghiệp: "Multifunctional forestry practices as a land use strategy to meet increasing private and public demands in modern societies" ppt
... full evolution. e multiple demands on forests in a rapidly evolving economic, social, and political environment require maintaining a high level of forest management standards and a flexible ... responsibly. Openness and flexibility in reacting to changing societal needs and values, understanding of the ecological, social and economic drivers determining their political relevance, and transparency ... spiritual values and of social and political realities. Some changes resulting from past Multifunctional forestry practices as a land use strategy to meet increasing private and public demands in...
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Báo cáo lâm nghiệp: "Improving RBS estimates – effects of the auxiliary variable, stratification of the crown, and deletion of segments on the precision of estimate" pps
... 50% (European mountain ash) and 85% (old pine).Keywords: randomized branch sampling; multistage sampling; unequal selection probabilities; auxiliary variables; pps-samplingJ. FOR. SCI., 53, ... can easily be transferred to multistage samples (C 2003). (In the fol-lowing, we write q i instead of q 1, q ij instead of q 2, and so on, in order to indicate the units selected ... variables considered in this study, fresh branch biomass and dry weight of needles and leaves, the squared diameter performed well as an auxiliary variable, particularly after deletion of larger...
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Báo cáo lâm nghiệp: "The evolution of natural floodplain forests in South Moravia between 1973 and 2005" pptx
... e loosening of the canopy due to dying and fall of some of the large oaks is a condition crucial for the development of level 3. e increasing EIV for the light and moisture of the herb layer ... recorded any growing seed-lings of Quercus robur. e presence of this tree in lower woody levels therefore remains close to zero. e presence of Quercus robur in layer 1 could be explained by its ... curves represent the polynomial fitting of values from the studied years. Full line – 1973, dashed line – 1994, dotted line – 2000, and dash -and- dot line – 2005. To determine EIV, the method...
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Báo cáo lâm nghiệp: "How to identify larvae of the protected species: Dioszeghyana schmidtii (Diószeghy 1935), and survey its presence and abundance (Lepidoptera: Noctuidae; Hadeninae)" pot
... Schiffermüller 1775) (Fig. 11). Living on oaks and other woody plants– Larva with inconspicuous pinacula. Cephallic capsule relatively small 14.14(12) Laterally line inconspicuous usually, pro-tho-racic ... (Hufnagel 1821) (Fig. 7). Living polyphageously on broadleaved trees and herbs– Laterally line locally bigger spots absent or body coloration distinct 8.8(7) Laterally line, at least in central ... dor-sal sclerotized plate also inconspicuous, similar in colour in vicinity. Cephallic capsule black Spudea ruticilla (Esper 1791). Living on oaks, very local and rare in Central Europe– Laterally...
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Báo cáo lâm nghiệp: "Patterns of longitudinal within-tree variation in pulpwood and solidwood traits differ among Eucalyptus globulus genotypes" pot
... unsampled (Tab. III) trees. In contrast, theStrzelecki and Flinders Island subraces exhibited little decay in both sampled and unsampled trees. In previously unsampled trees, significant family ... 13–14.[25] Pinkard E.A., Mohammed C., Beadle C .L. , Hall M.R., WorledgeD., Mollon A., Growth responses, physiology and decay associatedwith pruning plantation-grown Eucalyptus globulus Labill. and E.nitens ... Standards New Zealand,Wellington, NZ, 2004.[5] AS/NZS 2878, Timber-Classification into strength groups, Jointpublication of Standards Australia, Homebush, NSW and StandardsNew Zealand, Wellington,...
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Báo cáo lâm nghiệp: " The management of snags: A comparison in managed and unmanaged ancient forests of the Southern French Alps" pot
... during the sylvicultural and sylvigenesis cycle. Forthis mountain ecosystem, our results should provide guidelinesfor forest managers to maintain and sustain biodiversity.2. MATERIALS AND ... increas-ing temporal and spatial gaps in the availability of CWD densitywithin managed stands and an increasing distance betweenremnant old growth stands. In our study sites, the spatial patternof ... regenerations, revealing an advanced break-downof old stand. All maps were incorporated into a Geographic Information System(ArcInfo 8.1). Plots were located using a stratified random samplingprocedure...
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Báo cáo lâm nghiệp: "Ectomycorrhizal colonization of Alnus acuminata Kunth in northwestern Argentina in relation to season and soil parameters" potx
... sp., Selaginella sp. and Prunella sp. [2].2.2. Field collection and laboratory analysisTwenty square plots (10 × 10 m) were established randomly at eachsite during spring 1999 and fall 2000. ... Grand L. F., Haines L. W., The effect of fertilization ongrowth and mycorrhizae numbers in 11 years-old loblolly pineplantations, For. Sci. 23 (1977) 37–44.[31] Miller S .L. , Koo C.D., Molina ... l aulne andin dans deux forêts naturelles en relation avec quelques paramètres de sol. Les paramètres de sol étudiés étaientla capacité au champ, le pH, la conductivité électrique, le P disponible,...
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Báo cáo lâm nghiệp: "Eighth-year response of Douglas-fir seedlings to area of weed control and herbaceous versus woody weed control" docx
... water oak (Quercus nigra L. ), southern red oak (Quercus falcate Michx.) and blackgum (Nyssa sylvatica Marsh.) – resulted in volumegains that have continually increased in magnitude relative ... from 244 to 274 m. Soils are of the Nekia series and are well-drained and moderately deep, located on foothills and higher rolling uplands. They were formed in colluvium and residuumweathered ... aquilinum [L. ] Kuhn), snowberry (Symphoricarposalbus [L. ] Blake) and Rubus L. species – which had little effecton volume growth at Marcola once Douglas-fir saplings hadattained dominance. In...
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Báo cáo lâm nghiệp: "Effect of contrasting water supply on the diameter growth of Norway spruce and aspen in mixed stands: a case study from the southern Russian taiga" pot
... (Picea abies (L. ) Karst.), 11 aspens (Populus tremula L. ),3birches (Betula alba L. ), 2 mountain ashes (Sorbus aucuparia L. ) and 2 alders (Alnus incana (L. ) Moench) by stainless steel band den-drometers ... in 2000Seasonal increment of basal area in spruce represented over80% of the entire stand basal area increment (as indicated byscaling the data up to the stand level). Increment in aspen and alder, ... the beginningof growing season was estimated in a similar manner as is generallyused in forestry [2, 3]: (1) The equations relating tree basal area growth (since the beginningof growing season)...
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