Báo cáo lâm nghiệp: " Primary productivity of a" pot
Báo cáo lâm nghiệp: " Primary productivity of a" pot
... effect of water stress on net stand productivity (Monteny, 1987). The coefficient of conversion from carbon dioxide to drymatter is 0.56 g DM-g C02 !.The annual evolution of ... attenuation of solar radia-tion by clouds from the ITC and the deple-tion of soil water at the end of the shortdry season; 3) October-November: thephysiological ageing of ... At the end of the leaf span, globalrespiration rate of the stand was higherthan the assimilation rate of the canopy,which explains the negative rates of drymatter...
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Báo cáo lâm nghiệp: "Small mammals of a forest reserve and adjacent stands of the Kelečská pahorkatina Upland (Czech Republic) and their effect on forest dynamics" pps
... stand and a certain level of resistance to the impact of small rodents in spite of unfavourable years of the total disposal of seed crop. In addition to the eff ect of small mammals on stands ... of the Statistica.cz version 8 programme. e t-test was used for independent samples (comparisons of the weight of animals, diversity of two sites and rel-ative abundance of two types of ... diversi-ty of trees and microbiotopes limiting the ecologi-cal niche of Apodemus fl avicollis and allowing the occurrence of a number of other species of small mammals (Table 1). Open sites of plantings...
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Báo cáo lâm nghiệp: "Energy consumption of a chipper coupled to a universal wheel skidder in the process of chipping wood" pptx
... share of dust and the sharpness of cutting is decreased. e overhang of knives from the plane of the disc defines the prede-termined length of chips, which directly influences the length of chips ... the type, moisture and qual-ity of wood, lock and cutting angle of knives, angle of the contact, cutting speed, length of the slotted hole and feeding speed of wooden mass at chipping (B ... impor-tant is also the value of overhang from the plane of the disc in the process of step on the disc and work with a gradual change of the radius for the cutting edge of the knife. Knives for...
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Báo cáo lâm nghiệp: "The role of Hylastes cunicularius Erichson (Coleoptera: Scolytidae) in transferring uropodine mites in a mountain spruce forest" pptx
... proportion of beetles vectoring deutonymphs of uropodine mites, and on assemblage structure, frequency dis-tribution and placement of uropodids on the bark beetle vector. A total of 3,302 adults of ... presence of fresh wounds on lower parts of trunks, at heights of 1.3–1.6 m, measured from the ground to the lower margin of trap panes. In each sample plot they were posi-tioned at a distance of ... assumptions of parametric methods of data analysis after transformation. Next, the proportion of mite vectors in the population of H. cunicularius was calculated as a percentage of the beetles...
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Báo cáo lâm nghiệp: "Earthworms (Lumbricidae) of an air-polluted area affected by ameliorative liming" pdf
... eff ects of the storage of soil samples before extraction were proved on the amount of caught juvenile and adult earthworms on the spring and autumn date of sampling at the level of signifi ... high content of phosphorus, and nega-tively to the high level of calcium. D. octaedra responded positively to the higher level of calcium and D. vejdovskyi to the higher content of potassium.Keywords: ... quality of soil (A. caliginosa) and the indigenous communities of 2–4 species of earthworms can even transform in one-species communities of earthworms (R- 1994). e determination of pH...
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Báo cáo lâm nghiệp: "Effects of microsite variation on growth and adaptive traits in a beech provenance trial." pps
... – beginning of autumn colouring of individual leaves, 3 – beginning of autumn leaf colouring on a mass scale, 5–10% of leaves coloured, 4– mass autumn leaf colouring, ~ 50% of leaves coloured, ... (m)Fig. 1. Spatial patterns of the assessed envi-ronmental variables over the area of the beech provenance trialTable 1. Analysis of variance (signifi cance of F-tests) of the beech provenance ... prove-Table 3. Analysis of variance (signifi cance of F-tests) of the beech provenance trial under the RCB design: redefi ned blocks, subset of 10 provenancesTraitSource of variationR2provenance...
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Báo cáo lâm nghiệp: "old hardiness as a factor for assessing the potential distribution of the Japanese pine sawyer Monochamus alternatus (Coleoptera: Cerambycidae) in China" pdf
... distribu-tion of the PWN [16]. Therefore, determination of the northernlimit for distribution and forecast of potential dispersal regions of the beetle has important significance in the management of the ... as a factor for potential distribution of Monochamus alternatus, parameters of cold hardiness and acclimationresponses of the beetle were examined. Supercooling points (SCPs) of eggs, larvae, ... Sa,LeKa*aState Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences,Beijing 100080, ChinabDepartment of Entomology, Shanxi Agricultural...
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Báo cáo lâm nghiệp: "Infrared images of heat fields around a linear heater in tree trunks: what can be learned about sap flow measuremen" pptx
... same eccentricity of ellipse. Increase of temperature was caused by increase of stem tem-perature. Comparably visible range of iso-temperature profiles (compare upper parts of ellipses) demonstrates ... images of heat field and sap flow 657Figure 3. ( A) IR-image of the heat field in the stem xylem around a linear heater under zero-flow conditions: M – center of an ellipse, F1, F2– foci of an ellipse ... trans-port dynamics in view of optimization and improvement of traditional measurement techniques via heat sensors.The application of thermal measurements for the analysis of water transport in trees...
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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
... had85.0% of the leaf biomass of UT, whereas HT had 55.3% of the leafbiomass of UT. This was similar to differences in BA among plots(LT: 88.4% of UT; HT: 59.3% of UT).With the exception of 2 years ... INTRODUCTIONFoliar or leaf biomass of a forest stand is the primary deter-minant of stand growth [26, 31, 35] because foliage constitutesthe photosynthetic organ of a tree. For example, as a young ... proportion of growth allocated to branchesincreased at the cost of trunk growth in sparse forest stands. The ob-served positive effect of plot stem density on gross growth may reflectthis effect of dry...
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Báo cáo lâm nghiệp: "Effect of tree species substitution on organic matter biodegradability and mineral nutrient availability in a temperate topsoil" pptx
... highest content of 40.3 mg.kg−1for spruce soil (p < 0.05). Concerning the netproduction of ammonium for the 40 days of incubation, soilfrom native forest released 17.1 mg.kg−1 of NH4-N against13.4 ... accurately the impact of tree species, further studies areneeded in a long-term incubation so as to determine the ex-tent and dynamic of the biodegradation of organic matter, thenature of water extractable ... mineral-ization processes of soil organic compounds [12, 17] and onsome aspects of mineral weathering [4, 5]. However, the ef-fect of forest tree species substitution on the key-processes of organic matter...
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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 toánBáo cáo thực tập tại nhà thuốc tại Thành phố Hồ Chí Minh năm 2018chuyên đề điện xoay chiều theo dạngNghiên cứu sự hình thành lớp bảo vệ và khả năng chống ăn mòn của thép bền thời tiết trong điều kiện khí hậu nhiệt đới việt namNghiên cứu tổ chức pha chế, đánh giá chất lượng thuốc tiêm truyền trong điều kiện dã ngoạiNghiên cứu vật liệu biến hóa (metamaterials) hấp thụ sóng điện tử ở vùng tần số THzGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo 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 LPWANPhát hiện xâm nhập dựa trên thuật toán k meansNghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000Thơ nôm tứ tuyệt trào phúng hồ xuân hươngTăng trưởng tín dụng hộ sản xuất nông nghiệp tại Ngân hàng Nông nghiệp và Phát triển nông thôn Việt Nam chi nhánh tỉnh Bắc Giang (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vậtchuong 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 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 namHIỆU QUẢ CỦA MÔ HÌNH XỬ LÝ BÙN HOẠT TÍNH BẰNG KIỀMMÔN TRUYỀN THÔNG MARKETING TÍCH HỢP