flow nutrient cycling and carbon balance
Báo cáo lâm nghiệp: "Biomass increment and carbon balance of ash (Fraxinus excelsior) trees in an experimental stand in northeastern France" docx
... that carbon uptake during the growing Biomass increment and carbon balance of ash Table VIII Carbon balance for each of the two periods without growth during the one-year cycle considered, and carbon ... respiration and carbon balance) using the established relations, the distribution of foliage area per crown layer and microclimatic data; and, (iv) to compare the biomass increments and carbon balances ... The estimated values and associated statistics of the parameters a, b and c are listed in Table V Biomass increment and carbon balance of ash Table V Regression coefficients and statistics for...
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Báo cáo lâm nghiệp: "A model of light interception and carbon balance for sweet chestnut coppice (Castanea sativa Mill.)" pdf
... used it to derive a carbon balance of the stand, computed as the difference between net assimilation (predicted) and (growth and maintenance) shoot respiration (measured and fitted to temperature) ... allocation of carbon to roots was tentatively computed as the dif- carbon allocated to roots is similar to that stored in shoots total ference between the net amount of carbon entering the plant and the ... photosynthesis Agreement between measurements and model outputs is good However, at low light levels, the model underestimated photosynthesis for overcast sky conditions and overestimated it for clear sky...
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Báo cáo khoa học: "Nutrient cycling in deciduous forest ecosystems of the Sierra de Gata mountains: aboveground litter production and potential nutrient return" pot
... stands Values of 127, 108, 87, 65, and 57 kg -1 yr of the major elements (sum of N, Ca, Mg, P and K) and 6.6, 2.9, 3.0, 2.1 and 3.3 kg year of the micro-1 -1 nutrients (sum of Na, Mn, Fe, Cu and ... Carceller et al [5] and Gallardo et al [14] for Q pyrenaica and C sativa stands (around -1 -1 5.0 and 6.3 Mg yearrespectively); , -1 O’Neill and DeAngelis ([32]; 5.2 Mg -1 ), -1 year Anderson ([1]; ... chestnut (Castanea sativa Mill.) coppice and four oak (Quercus pyrenaica Willd.) stands, and to make a comparison between nutrient recycling in C sativa and the species it replaces (Q pyrenaica)...
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Báo cáo khoa học: "Nutrient cycling in deciduous forest ecosystems of the Sierra de Gata mountains: nutrient supplies to the soil through both litter and throughfall" ppt
... contrast, 108, 87, -1-1 65 and 57 kg hayearof macronutrients -1 -1 and 2.9, 3.0, 2.1 and 3.3 kg year of micronutrients were returned annually through the litterfall at FG, EP, NF and VR oak forests, ... [33]) and to a large extent the enrichment in nutrients is due to the washing of dry depositions (mainly Ca, P, Fe, Cu and Zn, and Mg on some plots) and leaching processes (mainly C, Mg, K and ... Cambisols [11] developed on slates and graywackes at NF and VR and on Ca-alcaline granite at EP and FG [13] At SM, owing to the strong slope (approximately 45 %), granitic sands predominate, sometimes...
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Báo cáo khoa học: "Responses of growth, nitrogen and carbon partitioning to elevated atmospheric CO concentration in live oak 2 (Quercus virginiana Mill.) seedlings in relation to nutrient supply Roberto" pot
... nutrient solution to avoid desiccation and minimize nutrient loss, thus limiting nutrient disequilibrium ([22]) chambers, two Plants were fertilized every days to saturation with of the two nutrient ... age, between RGR and Ln whole-plant biomass and between whole-plant % N and Ln whole-plant biomass were examined using non-linear regression techniques separately for each [CO and nutrient treat] ... atmospheric carbon dioxide and temperature on carbon partitioning, source-sink relations and respiration, Plant Cell Environ 14 (1991) 819-830 [19] Griffin K.L., Thomas R.B., Strain B.R., Effects of and...
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Báo cáo khoa học: "Carbon balance and tree growth in a Fagus sylvatica stand" potx
... assimilation and PAR for each sample trees 4.5 Pattern of carbon allocation Stem and leaves represented respectively about 50% and 25% of the annual carbon allocation and can be considered as major carbon ... dendrometer bands Figure shows that carbon in leaves represented a high proportion of annual carbon allocation (about 25%) in trees Annual carbon increment per tree is compared to tree carbon balance ... Bud-burst index and leaf index area Radial increment increased as soon as leaf expansion began and CO assimilation had started In diffuse Carbon balance and tree growth in a beech stand 57 Figure...
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Báo cáo toán học: "EMILION, a tree functional-structural model: Presentation and first application to the analysis of branch carbon balance" pdf
... links between branch death and carbon budget are rare [5, 35] EMILION was used to explore the hypothesis of branch death linked to the carbon balance Branch carbon balance (CB) corresponds here ... CBY the annual branch carbon balance 4.2 Results and discussion The instantaneous carbon balance of branches is the result of their activities: photosynthesis, respiration and growth This is negative ... the carbon balance of branches (figure 7) This plot shows the annual carbon balance of three branches (b6, b8, b10) calculated using a climate data set covering the 1980-1998 period The carbon balance...
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Báo cáo lâm nghiệp: "and nutrient cycling of a highly productive Corsican pine stand on former heathland in northern Belgium" docx
... in nutrient cycling, nutrient soil turnover and stand nutrition of these stands in connection with this vigour There are few studies concerning biomass and nutrient cycling of Corsican pine stands ... research also aimed to calculate stand nutrient uptake and requirement and to compare the uptake rates with the present nutrient pools and the nutrient status 2 MATERIALS AND METHODS 2.1 Study area ... ranged between and 15% of the total stand nutrient content 3.3 Nutrient pools versus nutrient fluxes The nutrient capital of K, Ca and Mg in the trees represented, respectively, 46, 36 and 46 % of...
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Life cycle assessment of carbon and energy balances in jatropha production systems of burkina faso
... underpermanentcrops and pastures(includingabandonedcropland and landnotyet cultivated),24%forestarea, and 10%undersettlement(other:21%).Highpopulation growth and acceleratinglanddegradationarekeydriversbehindcroplandexpansion ... information, and of 16 JatrophainBurkinaFaso closedͲended and partiallyopenquestionsinthecategoriesmotivation and reasonfor growingJ.curcas,choiceofland and landͲusehistory,establishment and management ... Jatrophacurcasoilconsumption and energysubstitution 122 6.3 6.3.1 6.3.2 6.3.3 6.3.4 6.3.5 Results 123 Cultivationphase 123 LandͲusechange and carbon balance ...
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Water and Carbon
... Water and Carbon: The Chemical Basis of Life May 4, 2011 Solid ….ice! 고체…얼음 Chất rắn ወወወ băng .وهي حالة ... estado de agregación de la materia en el que las sustancias no tienen forma ni volumen propio, adoptando el de los recipientes que las contienen الغاز هو أحد حال ت المادة، ومثل السوائل فإن الغازا...
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Improvement of nutrient removal and phosphorus recovery in the anaerobic/oxic/anoxic process combined with sludge ozonation and phosphorus adsorption
... oxidant, and recirculation of the solubilized excess sludge, containing readily biodegradable carbon, in a biological treatment system (Chu et al., 2008; Cui and Jahng, 2004; Kamiya and Hirotsuji, ... phosphate-accumulating organisms and nutrient removal efficiency in anaerobic/aerobic/anoxic process, Biopro Biosys Eng., 29(5-6), 305-313 Standard Methods for the Examination of Water and Wastewater (1995) ... with ozonation and phosphorus adsorption: A, previous study (Suzuki et al., 2006); B, this study - 136 - Journal of Water and Environment Technology, Vol 7, No 2, 2009 MATERIALS AND METHODS A...
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Tài liệu Management by objectives and the Balanced Scorecard: will Rome fall again? doc
... management processes (Kaplan and Norton, 1996b): • clarify and translate vision and strategy; • communicate and link strategic objectives and measures; • plan, set targets, and align strategic initiatives; ... expected and that strategic goals remain as the focus (Bartol and Martin, 1991; Odiorne, 1987; Reddin and Kehoe, 1974) The Balanced Scorecard This section details the development of the Balanced ... strategic feedback and learning; • link measures with rewards Similarities and differences between MBO and the Balanced Scorecard The management processes described for the Balanced Scorecard...
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Tài liệu Medicinal Chemistry and Pharmacological Potential of Fullerenes and Carbon Nanotubes docx
... Chemistry and Pharmacological Potential of Fullerenes and Carbon Nanotubes CARBON MATERIALS: CHEMISTRY AND PHYSICS A comprehensive book series which encompasses the complete coverage of carbon materials ... coverage of carbon materials and carbon- rich molecules from elemental carbon dust in the interstellar medium to the most specialized industrial applications of elemental carbon and its derivatives A ... fullerenes and carbon nanotubes (CNTs) play an important role These new allotropic forms of carbon have been discovered in the last two decades, and, since then, they have stimulated the curiosity and...
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Tài liệu Freedom of Expression on the Internet - A study of legal provisions and practices related to freedom of expression, the free flow of information and media pluralism on the Internet in OSCE participating States ppt
... Fixed and mobile broadband providers must disclose the network management practices, performance characteristics, and terms and conditions of their broadband services; ii No blocking Fixed broadband ... many states and governments and certain civil-society representatives and concerned citizens Prior to the 1990s, information and content was predominantly within the strict boundaries and control ... whether and how access to and content on the Internet are regulated across the OSCE region by examining existing laws and practices related to freedom of expression, the free flow of information and...
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Tài liệu Growths and Carbon Stocks of Para Rubber Plantations on Phonpisai Soil Series in Northeastern Thailand ppt
... The top soil is sandy clay loam soil and bottom soil is clay Soil texture in top soil found natural forest and 1, 5, 15 and 20 years old rubber plantations to have sandy clay loam and 10 years old ... bottom soil, natural forest and 20 years old plantations have clay soil, and 10 years old plantations have sandy clay loam to clay and and 15 years old plantation have sandy clay loam to clay soil ... integrated nutrient management to sustain yield and maintain soil quality and prevent deterioration (FAO, 2006) The integrated nutrient management needs to know the nutrient status in soil and plants,...
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Effects of nutrient supply and soil cd con
... weight basis) and total Cd amount per plant in leaves (L), stems (S), cuttings (C) and roots (R) for each clone (81090 and 78183), nutrient level (N1 and N2) and soil Cd concentration (Cd0 and Cd1) ... opposing and very consistent relationship between stem biomass production and stem Cd concentration (Fig 3a and b) The e ects of nutrient levels N1 and E Klang-Westin, K Perttu / Biomass and Bioenergy ... concentration (dry weight basis) and total amount of Cd in the stem for each clone (81090 and 78183), nutrient level (N1 and N2) and soil Cd concentration (Cd0 and Cd1) The plants are 2-years...
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gas - sensing properties of tin oxide doped with metal oxides and carbon
... temperature to LPG and ethanol gas are respectively shown in Fig 3a and b It seems that the optimized operating temperatures of the sensor to ethanol gas and LPG are around 350 and 250 ◦ C, respectively ... Environment and Chemistry, Hung-Yen University of Technology and Education His research activities are related with the design, fabrication and characterization of organic–inorganic hybrids and nanomaterials ... N Van Hieu et al / Sensors and Actuators B xxx (2009) xxx–xxx Fig Response of PtO2 , Fe2 O3 , La2 O3 , and CuO-doped SnO2 sensors to 2500 ppm (0.25%) LPG in air (a) and 250 ppm ethanol gas in...
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photocatalytic nanocomposites based on tio2 and carbon nanotubes
... shell and electron trapping by a carbon nanotube core and following reactions where CNT is a carbon nanotube, hVB is a hole in TiO2 valence band, eCB is a electron in TiO2 conduction band, and ... band into the conduction band leaving a hole behind Excited state conduction-band electrons and valence-band holes can recombine and dissipate as heat The valence-band holes are powerful oxidants, ... compound), glass- and carbon fibers, ceramic materials, polymers, and activated carbon have been widely used as a catalytic support However, single-walled and multi-walled carbon nanotubes have...
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