0
  1. Trang chủ >
  2. Luận Văn - Báo Cáo >
  3. Báo cáo khoa học >

Báo cáo lâm nghiệp: "Variability in Populus leaf anatomy and morphology in relation to canopy position, biomass production, and varietal taxon" docx

Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Spatial distribution of four spruce bark beetles in north-western Slovakia" pps

... traps give information influenced by mi-gration of beetles. CONCLUSIONSI. typographus remained dominant species on the majority of sites having high intensity of tree infes-tation mainly along ... understanding of bark beetles spatial distribution. It may be used for practical forest protection only as preliminary information.No environmental factor controlling observed pattern of bark beetles ... Ips typographus L. remained dominant species on majority of sites having high intensity of infestation. Lower altitudes in the south-eastern part of the region were often infested by I. duplicatus...
  • 8
  • 435
  • 0
Báo cáo lâm nghiệp:

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): 129–137 133e in uence of the radius...
  • 9
  • 294
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: " Growth of wild cherry (Prunus avium L.) in a mixture with other species in a demonstration forest" ppsx

... stand-forming capacity of wild cherry as well as its capacity to keep its position in a stand.MATERIAL AND METHODS A large stand with wild cherry trees as a stand-forming species in the area of Demonstration ... broadleaves such as Quercus robur, Quercus petraea, Tilia sp. and Carpinus betulus (P 2007). Growth of wild cherry (Prunus avium L.) in a mixture with other species in a demonstration forest ... evaluation of growth parameters in clonal test with wild cherry. Journal of Forest Science, 53: 57–65.KOBLIHA J., 2002. Wild cherry (Prunus avium L.) breeding program aimed at the use of...
  • 6
  • 357
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Soil characteristics under selected broadleaved tree species in East Norwa" docx

... soils under broadleaved tree species but also to refer to the likely patterns in selected soil properties among different soil units in silver birch (Betula pubescens Ehrh.) stands. In addition ... variation in an evaluation of the nutrient pools of organic layers and the mineral soil in forest stands dominated by silver birch.CONCLUSIONSReferring to properties of soils under broadleaved tree ... Estimat-ing differences within the selected soil properties, the initial data from nineteen soil profiles in silver birch stands were used for multiple comparisons of A/A2. Differences in selected...
  • 12
  • 313
  • 0
Báo cáo lâm nghiệp:

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. VFaculty 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...
  • 8
  • 305
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: " Current state of beech bark necrotic disease in southern Poland" ppt

... the current results of the evaluation of the degree of the beech bark necrotic disease in selected localities in Southern Poland. Be-cause of the absence of analogical investigations in Poland, ... 2/7004/27. Current state of beech bark necrotic disease in Southern PolandA. C, I. MInstitute of Forest Ecology of the Slovak Academy of Sciences, Zvolen, SlovakiaABSTRACT: e degree of the beech bark ... vectors of beech necrotic disease of the tracheomycotic type. Ekológia (Bratislava), 20: 404–413.MIHÁL I., CICÁK A., 2003. State of necrotic disease of beech in the growth phase of natural seeding...
  • 6
  • 306
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "How does legacy of agriculture play role in formation of afforested soil properties" ppsx

... of Wooded Agricultural Lands Soil Conditions Towards a Restoration of Forest Soil Conditions.How does legacy of agriculture play role in formation of afforested soil properties?D. K, ... important soil- forming and even soil- creating factor of soil genesis being likely the oldest human-induced alteration of soil proper-ties. Even rather extensive thousands years lasting amendment including ... proving legacy of manuring (E, G 1996; O et al. 2008). Supported by the Ministry of Agriculture of the Czech Republic, Project No. MZe QG50008 Dynamics of Conversion of Wooded...
  • 6
  • 212
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Phenology of four broad-leaved forest trees in a submountain beech forest" pptx

... forest trees in Slovakia. Nauka za Gorata – Forest Science, 43: 29–36.SCHIEBER B., 2006b. Spring phenology of European beech (Fagus sylvatica L.) in submountain beech forest stand with various ... deciduous forest tree species (Carpinus betulus L., Fagus sylvatica L., Quercus dalechampii Ten., Tilia cordata Mill.) was studied in a submountain beech forest stand in Central Slovakia. Two spring ... flushing of beech provenances. Silvae Genetica, 44: 343–346.WIELGOLASKI F.E., 1999. Starting dates and basic tempera-tures in phenological observations of plants. International Journal of Biometeorology,...
  • 8
  • 294
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Effect of leaf biomass and phenological structure of the canopy on plot growth in a deciduous hardwood forest in northern Japan" pot

... eachcombination of plot and month. Annual leaf biomass was calculatedby summing monthly leaffall.To quantify the phenological pattern of leaffall and the corre-sponding phenological structure of the ... 2006)Abstract – We monitored leaf biomass, seasonal changes in leaffall, and plot growth for 11 years post-thinning in a secondary deciduous hardwood stand dominated by Betula maximowicziana Regel ... 0.05;Tab. II). Effect of leaf biomass and phenological structure on plot growth 731Figure 5. Yearly changes in the ratio of fallen leaf biomass in October and November to annual fallen leaf biomass...
  • 8
  • 347
  • 0
Báo cáo lâm nghiệp:

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...
  • 13
  • 267
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Variability in Populus leaf anatomy and morphology in relation to canopy position, biomass production, and varietal taxon" docx

... 10.1051/forest:2007029Original articleVariability in Populus leaf anatomy and morphology in relation to canopy position, biomass production, and varietal taxonNajwa AL Aa,NicolasMa,b, Reinhart Ca*aUniversity ... determines leaf display, leaf distribu-tion and canopy density, and therefore in uences light inter-ception [27]. It has been demonstrated that the main factorgiving rise to the high leaf area index ... 32,53]. Twoof the main factors limiting productivity during the growingseason are the time necessary to reach maximal leaf area and the ability to maintain leaf area [39]. According to Ridge et al.[57]...
  • 12
  • 361
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Dendrochronology of pedunculate oak (Quercus robur L.) in an old-growth pollarded woodland in northern Spain: establishment patterns and the management history" ppt

... trees in Southern and Northern Tragamón. Oak pollarding in 1806 affected the southernmost extreme of South-ern Tragamón, and the north-central area of Northern Trag-amón. On the other hand, oaks ... 300–399 and 400–499 years) and the meandistance between target trees and their nearest neighbours was calcu-lated within, and between, age classes. The null hypothesis of a randomarrangement of ... 1991.[43] Rozas V., Detecting the impact of climate and disturbances on tree-rings of Fagus sylvatica L. and Quercus robur L. in a lowland forest in Cantabria, Northern Spain, Ann. For. Sci. 58 (2001)...
  • 10
  • 332
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: " Dendrochronology of pedunculate oak (Quercus robur L.) in an old-growth pollarded woodland in northern Spain: tree-ring growth responses to climate" pptx

... 10.1051/forest:2005012Original article Dendrochronology of pedunculate oak (Quercus robur L.) in an old -growth pollarded woodland in northern Spain: tree-ring growth responses to climateVicente ROZASa,b*a ... tree growth and cli-mate variables was investigated in Tragamón, an old -growth oak woodland in the Cantabrian lowlands, northern Spain.Time-independent and time-dependent responses of ring-widthvariation ... important first step in understanding andanticipating the responses of old -growth pollarded woodlands to future climatic changes in Europe.Acknowledgements: The author thanks Juan Luis Menéndez andFrancisco...
  • 10
  • 218
  • 0
Báo cáo lâm nghiệp:

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...
  • 20
  • 303
  • 0
Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Variability of stomatal conductance in the crown of a maritime pine (Pinus pinaster Ait.)" pps

... of the day. Variation in vapor deficitand irradiance explained only 33% of the variation of gs. No stratification could beshown in the crown at any time of the day.Soil ... In the pre-drought period, the stomatal response to air water vapor deficit andirradiance explains 52% of the total gsvariation; gs decreases as D increases,and increases ... features explained 75% of the total variation of g,.During the drought period, the meanand variance of gs were much lower andshowed only a slight decrease during the course...
  • 3
  • 207
  • 0

Xem thêm

Từ khóa: báo cáo lâm nghiệpcách làm báo cáo tốt nghiệphướng dẫn làm báo cáo tốt nghiệp khoa kế toáncách làm bìa báo cáo tốt nghiệpcách làm slide báo cáo tốt nghiệpcách làm báo cáo tốt nghiệp chuyên ngành kế toáncách làm powerpoint báo cáo tốt nghiệptài liệu làm báo cáo tốt nghiệpcách làm bài báo cáo tốt nghiệphướng dẫn làm báo cáo tốt nghiệpbáo cáo tốt nghiệp ngành lâm nghiệphướng dẫn làm báo cáo tốt nghiệp trường lâm nghiệpmẫu bìa làm báo cáo tốt nghiệphướng dẫn làm slide báo cáo tốt nghiệpbáo cáo tốt nghiệp dược lâm sàngNghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thốngMột số giải pháp nâng cao chất lượng streaming thích ứng video trên nền giao thức HTTPNghiên cứu tổ chức chạy tàu hàng cố định theo thời gian trên đường sắt việt namđề thi thử THPTQG 2019 toán THPT chuyên thái bình lần 2 có lời giảiBiện 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 carôtenôitPhối 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 thọTìm hiểu công cụ đánh giá hệ thống đảm bảo an toàn hệ thống thông tinThơ nôm tứ tuyệt trào phúng hồ xuân hươngThiết 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 XIXBT Tieng anh 6 UNIT 2Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vậtNguyên 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 vậtBÀI HOÀN CHỈNH TỔNG QUAN VỀ MẠNG XÃ HỘIĐổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt namTÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲQUẢN LÝ VÀ TÁI CHẾ NHỰA Ở HOA KỲ