Báo cáo lâm nghiệp: "Variability and heterogeneity of humus forms at stand level: Comparison between pure beech and mixed beech-hornbeam forest" ppsx
Báo cáo lâm nghiệp: "Spatio-temporal patterns of the Norway spruce decline in the Beskid Śląski and Żywiecki (Western Carpathians) in southern Poland" pot
... 38–44Spatio-temporal patterns of the Norway spruce decline in the Beskid Śląski and Żywiecki (Western Carpathians) in southern PolandW. GDepartment of Forest Management in Mountain Regions, ... northern part of Beskidy Mts. was as-sessed as poor, and improving southward – the best was in the southern parts of Beskid Żywiecki. In the recent years, the areas of the occurrence of the Armillaria ... almost the whole area of the West-ern Beskidy region. Along with the increase of the size of salvage cuttings (including the removal of in- fested trees) the area of stands affected by the forest...
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Báo cáo lâm nghiệp: "Variability in density of spruce (Picea abies [L.] Karst.) wood with the presence of reaction wood" potx
... remarkable increase in wood density along the stem radius in all the models. In the CW zone, the increase is more distinct in the first 40 years of growth, then the wood density stagnates. In the other ... trend when density increases with the increasing percentage of compression wood in the sample. When there is 10% of compression wood in the total area of the sample front, the wood density is ... expand the know- ledge of the properties of Norway spruce (Picea abies [L.] Karst.) wood with the presence of reac-tion wood. J. FOR. SCI., 53, 2007 (3): 129–137 133e in uence of the radius...
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Báo cáo lâm nghiệp: " Long-term effects of CO2 enrichment on bud phenology and shoot growth patterns of Norway spruce juvenile tree" potx
... Research Intention of Institute of Systems Biology and Ecology, Project No. AV0Z 60870520. Long-term effects of CO2 enrichment on bud phenology and shoot growth patterns of Norway spruce juvenile ... acceleration of bud phenology result in prolonga-tion of the shoot growth period and in a subsequent enhancement of wood production (B 1994). e effect of long-term (months and years) CO2 enrichment ... the bud scales, and 4 – leaf per needle elon-gation). Shoot elongation growth was observed on exposed and shaded apical (ExA and ShA) and exposed and shaded lateral (ExL and ShL) buds/shoots....
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Báo cáo lâm nghiệp: "Variability of spruce (Picea abies [L.] Karst.) compression strength with present reaction wood" pdf
... Variability of spruce (Picea abies [L.] Karst.) compression strength with present reaction woodV. G, H. VFaculty of Forestry and Wood Technology, Mendel University of Agriculture ... the compression strength of fresh spruce is (44%) higher than that of normal wood.e objectives of this paper are to find out the lim-its of compression strength parallel to grain of spruce ... corresponds to the data for the compression wood of spruce (Picea abies) with 12% of moisture content published by G (2002) and H et al. (2003). e higher strength of compression wood is caused...
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Báo cáo lâm nghiệp: "Some methodological aspects of the National Forest Inventory and Monitoring in Slovakia" pptx
... main tree species, the input data being the tree diameter and height, quality of the bottom third of the stem (A, B, C), stem damage (yes, no), and in the case of the beech also the age and ... for assessing the forest state – survey of natural conditions and forest ecology, detection of forest stands condition for forest management needs, and the national monitoring of forest health ... variables by the same method and at the same place over a longer time period. Data is collected using the computer-Some methodological aspects of the National Forest Inventory and Monitoring in SlovakiaŠ....
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Báo cáo lâm nghiệp: "Interactive effects of drought and pathogens in forest trees" docx
... approach has proved very interest-ing and useful in the case of complex decline syndromes wheremultiple abiotic (including drought) and biotic (pathogens and insects) factors are involved [80, 85,106, ... PROCESSES AND MECHANISMSTheoretically, three main types of drought- disease interac-tion can be expected:– A direct effect of drought on pathogens; – Indirect effects of drought on pathogens ... factor in the biocenosis, by reducing the biomass and modulating thespecies composition.4.3. Possible role of root pathogens in declinesassociated with drought The role of root pathogens in drought...
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Báo cáo lâm nghiệp: "Successful under-planting of red oak and black cherry in early-successional deciduous shelterwoods of North America" ppsx
... early-successional forest stands with red oak and black cherry was tested as a way of improving productivity on abandonedagricultural land of North American temperate deciduous forests. A partial ... associatedwith increased growth of black cherry. Both height and diame-ter growth were increased, pointing to an increase in availablelight at the top of the seedlings (which would also explain thethicker ... go against the accepted opinion thatthinning the stand should increase herbivory. We observed nosuch increase, even in red oak which experienced the mostbrowsing. Successful under-planting...
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Báo cáo lâm nghiệp: "Variability of cutting regimes in small private woodlots of south-western France" pot
... edge of P-1).The regeneration of the stands is always natural (shoot +seedling); no planting was identified in the woodlots studied.Clearing, thinning of seedlings, early thinning and pruningwere ... particu-larly concerning the density of the maintained standards, butwere often in the framework of a cordial relationship. Cutting regimes in small forest 927[20] Giudici F., Zingg A., Sprouting ability ... bequalified as being “less sustainable”. Indeed the site’s nativespecies are maintained and varied species of standards are in general left at the time of each cutting operation, which main-tains a balance...
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Báo cáo lâm nghiệp: "Efficient method of micropropagation and in vitro rooting of teak (Tectona grandis L.) focusing on large-scale industrial plantations" pptx
... weeks of culture, on the rooting medium, root-ing took place only in the presence of auxin or putrescine.IBA alone induced 30−50% rooting depending on its con-centration, producing swollen and ... Regional teak marketing and trade,Proceedings of third regional seminar on teak, Indonesia, 2001,pp. 1–14.[3] Castro R.D., Diaz G.J., Linero J.C., In vitro clonal propagation of elite trees of ... shoots. In specieswith high endogenous polyamine levels they had no benefi-cial effect [22]. Perhaps teak contains low concentration of Method of micropropagation and in vitro rooting of teak 75Figure...
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Báo cáo lâm nghiệp: "Across-site heterogeneity of genetic and environmental variances in the genetic evaluation of Eucalyptus globulus trials for height growth" ppt
... by the square root of the respective sampling variances, obtained from the inverse of the aver-age information matrix. Using the estimated components of variance,approximations of additive genetic, ... from the sampling(co )variances of the components in the denominator of equation (3). The standard errors of were calculated according to the generalexpression for the variance of a ratio, based ... [23])estimates of variance components and their standard errors wereobtained by using the average information REML algorithm [9],implemented in the ASREML program [10]. The standard errors of the estimated...
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Báo cáo lâm nghiệp: "Optimising the management of Pinus sylvestris L. stand under risk of fire in Catalonia (north-east of Spain)" ppsx
... stand age when the first thinning occurs; years sinceprevious thinning for the other thinnings; remaining basal area.For the final cutting: years since the last thinning to the first regen-erative ... 493501â INRA, EDP Sciences, 2005DOI: 10.1051/forest:2005054Original articleOptimising the management of Pinus sylvestris L. stand under risk of fire in Catalonia (north-east of Spain)José ... [18]. In this study we use a simulation-optimisation system,SPINE [19], to examine the effect of risk of fire on the optimaleven-aged management of Scots pine (Pinus sylvestris L.) stands in Catalonia...
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Báo cáo lâm nghiệp: "Variability and heterogeneity of humus forms at stand level: Comparison between pure beech and mixed beech-hornbeam forest" ppsx
... that (i) the variability and heterogeneity of humus form are correlated with the spatialpattern of stand canopy, (ii) humus forms are more activewithin mixed stand and (iii) the improvement of ... 10.1051/forest:2005110Original articleVariability and heterogeneity of humus forms at stand level: Comparison between pure beech and mixed beech- hornbeam forestMichaël AUBERT*, Pierre MARGERIE, ... 1 and 2 than that of the pure stand (PS). It was the opposite on axis 3. This indicatedthat the range of sample variability within stands was greatestfor the mixed stand on axes 1 and 2 and...
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Báo cáo lâm nghiệp: "Variability of initial growth, water-use efficiency and carbon isotope discrimination in seedlings of Faidherbia albida (Del.) A. Chev., a multipurpose tree of semi-arid Africa. Provenance and drought effect" doc
... to semi-arid regions [37]. Mature trees of Faidherbia albida are famous for their [19] Ismail A. M., Hall A. E., Inheritance of car-bon isotope discrimination and water-use ... A. , LoustauD. and Ferhi A. , Genetic and environmentaldeterminants of water-use efficiency and car-bon isotope discrimination in forest trees, in: Sandermann H., Bonnet-Masimbert ... Lemane I., Gambo S., Trial of nine Acacia albida provenances in Dosso,Niger, in: Vandenbeldt R.J. (Ed.), Faidherbia albida in the West African Semi-Arid Trop-ics: Proceedings...
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Từ khóa: Nghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thốngchuyên đề điện xoay chiều theo dạngBiện pháp quản lý hoạt động dạy hát xoan trong trường trung học cơ sở huyện lâm thao, phú thọGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWANNGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN SLIDEPhối hợp giữa phòng văn hóa và thông tin với phòng giáo dục và đào tạo trong việc tuyên truyền, giáo dục, vận động xây dựng nông thôn mới huyện thanh thủy, tỉnh phú thọPhát triển mạng lưới kinh doanh nước sạch tại công ty TNHH một thành viên kinh doanh nước sạch quảng ninhTrả hồ sơ điều tra bổ sung đối với các tội xâm phạm sở hữu có tính chất chiếm đoạt theo pháp luật Tố tụng hình sự Việt Nam từ thực tiễn thành phố Hồ Chí Minh (Luận văn thạc sĩ)Thiết kế và chế tạo mô hình biến tần (inverter) cho máy điều hòa không khíSở hữu ruộng đất và kinh tế nông nghiệp châu ôn (lạng sơn) nửa đầu thế kỷ XIXChuong 2 nhận dạng rui roKiểm sát việc giải quyết tố giác, tin báo về tội phạm và kiến nghị khởi tố theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn tỉnh Bình Định (Luận văn thạc sĩ)BT Tieng anh 6 UNIT 2chuong 1 tong quan quan tri rui roNguyên tắc phân hóa trách nhiệm hình sự đối với người dưới 18 tuổi phạm tội trong pháp luật hình sự Việt Nam (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtMÔN TRUYỀN THÔNG MARKETING TÍCH HỢP