matter soil carbon and carbon sequestration in zambia
Carbon Sequestration in Forest Ecosystems pot
... established is increasing, the importance of the remaining existing forests in maintaining the global carbon cycle cannot be understated By bringing current knowledge on carbon sequestration in forest ... disturbances in peatlands, and in forests affected by mining activities and urbanization on C sequestration in forests In the following Chapter 4, C influx- and efflux processes, C turnover and C pools ... different above- and belowground pools in plant, animal and microbial biomass, and in soil organic matter (SOM) Increases in atmospheric CO2 concentrations and temperature, and changes in rainfall patterns...
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Carbon sequestration in sub-tropical soils under rubber plantations in north-east India potx
... forest in the Indian state of Tripura since 1975 to improve degraded lands, generate income for locals, and meet increasing demand for rubber It is expected that reforestation of degraded lands ... surface soil compared to a non-linear increase in subsurface soil However, both CNOX and CT stocks increased quadratically over time Summing the C content over soil depth, the profile-wise accumulation ... Conclusions Standing biomass, biomass C content, and annual litter-fall of rubber plants quadratically and significantly increased Greater accumulation litter-fall on the surface linearly and significantly...
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carbon sequestration in agricultural soils a multidisciplinary approach to innovative methods
... Carbon Sequestration in Agricultural Soils Alessandro Piccolo Editor Carbon Sequestration in Agricultural Soils A Multidisciplinary Approach to Innovative Methods Editor Prof Dr Alessandro ... • • • • Increase in average temperature in Europe Decrease in rainfall in Southern Europe Increase in rainfall in Northern Europe Possible increase in the frequency of heavy rainfall events across ... sources and sinks in forest land and related land-use changes In 2009, a technical group, formed by experts from different institutions (ISPRA; Ministry of the Environment, Land and Sea; Ministry...
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Báo cáo lâm nghiệp: "The contribution of wood products to carbon sequestration in Portugal" pptx
... assumed to include the printing and writing paper in use plus the paper and paperboard disposed in landfills and averaged approximately 0.45 in Portugal, between 1961 and 2000 (printing and writing ... parameters (Tabs I and II) and were combined in order to obtain maximum and minimum estimates of the carbon sequestration in wood products The biomass conversion factor for industrial roundwood ... changes in the estimates of carbon sequestration MATERIALS AND METHODS In the stock-change approach, carbon sequestration is estimated as the sum of the change in carbon stocks in forest and the...
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precipitation effects on soil carbon cycling in the sonoran desert
... precipitation vary in magnitude and timing, altering the depth of water infiltration and the duration of high soil moisture (Weltzin et al 2003, Schwinning and Sala 2004) Variation in soil moisture ... events is critical to understanding soil moisture availability Rain falls as discrete events (pulses) that vary in size and sequencing, resulting in soil “wet-dry cycles” Soil organisms are responsive ... gaining a mechanistic understanding of the changes in soil carbon processes with vegetation change will be important in determining how precipitation change will affect ecosystem function in...
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Green chimney localized carbon sequestration in closed environment
... and other terrestrial options for the environmental reason, such as helping to maintain food security and secure land tenure in developing countries, increasing farm income, restoring and maintaining ... term Carbon sequestration by soil due to reduction in CH4 soil sink Furthermore, using soil in the study would result in a complex system of photobioreactor, thus requiring complex modeling and ... (Cohen and Waddell, 2009) In addition, removing CO2 by using biosequestration is not merely about reforestration and land management, broadly it includes the carbon capture and sequestration by using...
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Green chimney localized carbon sequestration in closed environment
... and other terrestrial options for the environmental reason, such as helping to maintain food security and secure land tenure in developing countries, increasing farm income, restoring and maintaining ... term Carbon sequestration by soil due to reduction in CH4 soil sink Furthermore, using soil in the study would result in a complex system of photobioreactor, thus requiring complex modeling and ... (Cohen and Waddell, 2009) In addition, removing CO2 by using biosequestration is not merely about reforestration and land management, broadly it includes the carbon capture and sequestration by using...
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báo cáo sinh học:" Task-shifting HIV counselling and testing services in Zambia: the role of lay counsellors" pot
... appeared during these interviews Almost all the lay counsellors we interviewed were interested in future training and continuing in what was considered a professional field, including obtaining advanced ... studies to ensure that trainees understand the concepts and methods of HIV counselling and testing In the four-week practicum, each trainee practices counselling and testing http://www.human-resources-health.com/content/7/1/44 ... conducted in 10 health facilities in two provinces in Zambia A multi-stage purposive sampling process of two of the five provinces in which ZPCT operates was selected Luapula Province lies in the...
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Báo cáo lâm nghiệp: "Carbon accumulation in Finland’s forests 1922–2004 – an estimate obtained by combination of forest inventory data with modelling of biomass, litter and soil" potx
... origin, and the transfers of carbon in litter and soil between forests and other land uses in Finland’s forests between 1922 and 2004 Figure Annual changes in the carbon stock of litter and soil ... Carbon fluxes in Finland’s forests between 1922 and 2004 Figure Average carbon budget of Finland’s forests in the 1990s (carbon fluxes and annual changes in the carbon stocks (in parentheses) in ... carbon per forested area in forests remaining as forests and an expanded forested area (see Fig 1) Carbon accumulated mainly in the biomass of trees, Carbon sink of Finland’s forests Figure Carbon...
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Báo cáo lâm nghiệp: "Soil carbon dioxide efflux in pure and mixed stands of oak and beech" potx
... higher in the beech and mixed stands The soils of all stands are well drained; the ground water is below 1.5 m depth during the growing season and rises in winter up to 3045 cm depth In each stand, ... tested, using contrasts in association with a linear mixed model containing the following variables: stand, moisture treatment, the interaction between stand and moisture treatment, and the two random ... allocation [3], and on soil microclimate [2] In addition, interactions between species in mixed stands have been reported in some instances [40], which might aect soil respiration Table I Mean stand characteristics...
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Báo cáo hóa học: " Influence of grazing and precipitation on ecosystem carbon cycling in a mixed-grass prairie" potx
... grazing intensity in grassland carbon cycling (e.g., Risch and Frank 2006) However, we did find interactive effects of grazing intensity × pastures and years on ecosystem carbon fluxes Chimner and ... snow and summer rain influence ecosystem carbon cycling in a mixed-grass prairie, Wyoming, USA Ecohydrology Derner, JD, and RD Hart 2007 Grazing induced modifications to peak standing crop in northern ... differences in soil C sequestration trajectories are similar to those reported by Welker et al (2004a) whereby grazing regimes in an alpine grassland of Wyoming are dictating soil C sequestration...
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Báo cáo hóa học: " FTIR and Raman Spectroscopy of Carbon Nanoparticles in SiO2, ZnO and NiO Matrices" pdf
... different results: extremely high scattering intensity and an increasing background intensity as the Raman shift increases Due to the increasing background intensity, the phonon confinement model ... an indication of the phonon confinement in nanoclusters of carbon within the ZnO matrix for C–NiO and C–ZnO samples are similar except that intensity is higher in ZnO than NiO It is interesting ... these carbon clusters is large However, asymmetry in the G peak was observed in all samples indicating that the nano -carbon is graphitic in structure In Figs 5–7, we have re-drawn the G peak in...
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Báo cáo lâm nghiệp: "Moisture effect on carbon and nitrogen mineralization in topsoil of Changbai Mountain, Northeast China" pptx
... (2007): Soil carbon mineralization potential and its effect on soil active organic carbon in evergreen broadleaved forest and Chinese fir plantation Chinese Journal of Ecology, 26: 1918–1923 (in Chinese) ... 35 42 Days of incubation Days of incubation Fig The effect of soil moisture on rates of soil C mineralization by elevation and soil moisture level on Changbai Mountain in NE China Elevation (m): ... partially influenced soil C mineralization, since the latter was strongly regulated by the activity of soil microbial activity, which was affected by soil pH, soil texture and other factors influencing...
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Báo cáo lâm nghiệp: "Forest and shrubland canopy carbon uptake in relation to foliage nitrogen concentration and leaf area index: a modelling analysis" ppt
... [33] Linder S., Axelsson B., Changes in carbon uptake and allocation patterns as a result of irrigation and fertilization in a young Pinus sylvestris stand, in: Waring R.H (Ed.), Carbon uptake and ... cliffortioides Hook (f.) Poole and Pinus contorta Douglas ex Loudon spp contorta at alpine and subalpine altitudes, in: Waring R.H (Ed.), Carbon Uptake and Allocation in Subalpine Ecosystems as a Key ... Leptospermum/Kunzea site and 12% at the Dacrydium site (Fig 3) In contrast, ε gross increased, but non-linearly, with increasing foliage nitrogen concentration Changing L resulted in a linear effect on integrated...
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Báo cáo khoa học: "Above- and belowground phytomass and carbon storage in a Belgian Scots pine stand" docx
... examination More than half of the C accumulated in forests resides in the soil as organic matter [39] Globally, soil organic matter content increases with decreasing temperature, increasing precipitation ... range in soil nutrient and soil moisture conditions probably explains this finding [21] In the Belgian Campine region, Scots pine is typically planted on strongly leached, nutrient-poor podzol soils ... soil from drying out Almost 60 % of the total C in the stand was found in matter in soil and litter, which was in agreement with similar Belgian [15] and Dutch [25] forests Scots pine litter has...
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Báo cáo khoa học: "Carbon balance and tree growth in a Fagus sylvatica stand" potx
... trees in suppressed, intermediate, codominant and dominant crown position in the canopy 51 Carbon balance and tree growth in a beech stand 2.3 Measurements at the whole-tree level Our sampling ... differed significantly according to social status and to level within the crown (table IV) Carbon uptake was higher in dominant and codominant classes than in intermediate one and was higher at the ... 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 khoa học: "Consequences of an excess Al and a deficiency in Ca and Mg for stomatal functioning and net carbon assimilation of beech leaves" ppt
... 26, 28 and 40] Schnabl and Ziegler [33] found that mM Al3+ inhibits stomatal opening in illuminated epidermal strips of Vicia faba, by preventing K+ accumulation and starch mobilization in the ... difference in absolute K contents, Kgd/Kep and gw were similar for +Al and –CaMg plants The seedlings submitted to combined Al stress and a deficiency in Ca and Mg were characterized by high gw in darkness: ... H.J Van Praag and F Weissen for supplying beech seedlings, and F Toussaint and A.M Defrenne for the maintenance of plant culture They thank also M Burlett and F Willm for help in gas exchange...
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Báo cáo lâm nghiệp: "Oak growth, development and carbon metabolism in response to water stress" pps
... decrease, indicating that Q macrocarpa could not utilize rain water in the upper soil layers and Knapp, 1986) The ability to increase root growth into and to increase root proliferation within enriched ... not expand lateral roots into adjacent moist soil In contrast, Q lobata and Q douglasii increased lateral root growth in the moist soil by 70 and 80%, respectively (Callaway, 1990) (Abrams CARBON ... conflicting problem of maintaining some degree of photosynthesis while minimizing water loss Stomatal control in response to varying moisture stress is the first and perhaps the most important step in...
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Báo cáo lâm nghiệp: "Changes in carbon uptake and allocation patterns in Quercus robur seedlings in response to elevated an 2 CO and water stress: C 13 labelling" pps
... collected in Autumn 1993 in acorns were parent stand close to Nancy (Lorraine, France), soaked in fungicide (Rhodiasan, Rhône Poulenc Paris, France) and stored at-1 °C in plastic bags over-winter In ... lignin and cellulose are affected by rising atmo2 spheric CO in trees Thus, whether the amounts of carbon fixed in such metabollically inert pools differ with the availability of carbohydrates and ... allo] cation to fine roots does not mean that root activity has not been modified by CO enrichment Original insights into fine root activity in response to doubling [CO were ] C again provided by...
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Báo cáo lâm nghiệp: "Carbon and nitrogen allocation in trees" pot
... proteins These proteins are rich in arginine and other basic amino acids (Kang and Titus, 1980), accumulate in the fall, disappear in the spring and are glycoproteins similar to those found in ... in NH and N0 availa4 bility, the importance of maintaining an internal supply of N for growth and the importance of minimizing carbon costs of assimilation (Schulze, 1982; Chapin, 1983; Chapin ... leaf and shoot growth slows in early summer The initiation of storage is often indicated by an increase in arginine as new concentration in small branches and bark tissue Both soluble and protein...
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