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Статті в журналах з теми "Sols – Teneur en dioxyde de carbone":
Gilliot, Jean-Marc, Emmanuelle Vaudour, Joël Michelin, and Sabine Houot. "Estimation des teneurs en carbone organique des sols agricoles par télédétection par drone." Revue Française de Photogrammétrie et de Télédétection, no. 213 (April 26, 2017): 105–15. http://dx.doi.org/10.52638/rfpt.2017.193.
Razafimbelo, Tantely Maminiaina, Andry Andriamananjara, Tovonarivo Rafolisy, Herintsitohaina Razakamanarivo, Dominique Masse, Eric Blanchart, Marie-Virginie Falinirina, Laetitia Bernard, Nasandratra Ravonjiarison, and Alain Albrecht. "Impact de l’agriculture climato-intelligente sur les stocks de carbone organique du sol à Madagascar." Cahiers Agricultures 27, no. 3 (May 2018): 35001. http://dx.doi.org/10.1051/cagri/2018017.
Jassim Najid. "Entisol Propriétés Chimiques Sur Le Système Agriculture Biologique." International Journal of Science and Society 4, no. 1 (February 15, 2022): 152–58. http://dx.doi.org/10.54783/ijsoc.v4i1.425.
Razakamanarivo, Ramarson Herintsitohaina, Marie-Antoinette Razafindrakoto, and Alain Albrecht. "Fonction puits de carbone des taillis d'eucalyptus à Madagascar." BOIS & FORETS DES TROPIQUES 305, no. 305 (September 1, 2010): 5. http://dx.doi.org/10.19182/bft2010.305.a20438.
Fleurat-Lessard, F., and J. M. Torc'h. "Influence de la teneur en oxygène sur la sensibilité de certains stades juvéniles de Sitophilus oryzae et S. granarius au dioxyde de carbone." Entomologia Experimentalis et Applicata 58, no. 1 (January 1991): 37–47. http://dx.doi.org/10.1111/j.1570-7458.1991.tb01449.x.
Ndiaye, O., AT Diop, LE Akpo, and M. Diene. "Dynamique de la teneur en carbone et en azote des sols dans les systèmes d’exploitation du Ferlo : cas du CRZ de Dahra." Journal of Applied Biosciences 83, no. 1 (January 27, 2015): 7554. http://dx.doi.org/10.4314/jab.v83i1.5.
Doumbia, Salif, Sidiki G. Dembele, Fagaye Sissoko, Odiaba Samake, Fernando Sousa, Harun Cicek, Noah Adamtey, and Andreas Fliessbach. "Evaluation de la fertilité des sols et les rendements de cotonnier, maïs et sorgho à >Gliricidia sepium (Jacq.) Kunth ex. Walp." International Journal of Biological and Chemical Sciences 14, no. 7 (December 7, 2020): 2583–98. http://dx.doi.org/10.4314/ijbcs.v14i7.17.
Bodjona, Magnoudewa Bassai, Massama-Esso N'goumtete, Diheenane Diyakadola Bafai, Awedeou Kedjeba, Gado Tchangbedji, and Biritandjoma Ezekias Batako. "Production artisanale de biochar à partir des tiges de cotonniers du Togo : Analyse de sa qualité pour sa valorisation en amendement organiques." International Journal of Biological and Chemical Sciences 17, no. 7 (February 22, 2024): 2958–70. http://dx.doi.org/10.4314/ijbcs.v17i7.27.
Nyami, Bonaventure Lele, Claude Kachaka Sudi, and Jean Lejoly. "Effet du biochar et des feuilles de Tithonia diversifolia combiné à l’engrais minéral sur la culture du maïs (Zea mays L.) et les propriétés d’un sol ferralitique à Kinshasa (RDC)." BASE, 2016, 57–67. http://dx.doi.org/10.25518/1780-4507.12592.
Vandenberghe, Christophe, and Gilles Colinet. "La gestion de la matière organique du sol, un enjeu important pour limiter la lixiviation du nitrate vers les eaux souterraines." BASE, 2017, 201–8. http://dx.doi.org/10.25518/1780-4507.13340.
Дисертації з теми "Sols – Teneur en dioxyde de carbone":
Doupoux, Cédric. "Caractérisation et modélisation de la dynamique des stocks de matière organique profonde des sols amazoniens." Thesis, Toulon, 2017. http://www.theses.fr/2017TOUL0003/document.
Recent results have shown that equatorial podzols store large amounts of carbon in their deep Bh horizons. This leads to two main questions: (1) how and at what kinetics these soils were formed, (2) how climate change could induce atmospheric carbon production that could impact the global climate system.In this context, we have developed a model that allows to constrain carbon fluxes both by the observed C stocks and their 14C age. In a sufficiently simplified situation, we have established a formal relationship between the C stock evolution and its 14C age. Applied to Amazonian podzols, our model has brought new and unexpected results. It has been shown that the surface horizons of the most hydromorphic podzolized areas are the largest contributors of MOD transferred to the hydrographic network then to the sea. It is observed that the formation of Bh is only possible by considering two compartments, fast and slow. The estimate of their formation time (low estimate) allowed to differentiate between relatively young podzols (formation time 15 – 25 ky) developed on relatively recent Holocene sediments and old podzols (formation 180 – 290 ky) developed on older sediments. The carbon accumulation rate in the studied podzols ranges from 0.54 to 3.17 gC m-2 y-1, which corresponds to a carbon sequestration around 3 1011 gC an-1, which is significant at the geological scales.Column percolation experiments allowed us to show the reactivity of the Bh material and the presence, despite very high C/N ratios (63 on average), of a significant bacterial activity which modifies the nature of the MOD which percolates through it. This MOD has the capacity to transport Al and Fe in the form of complex organometallic complexes capable of migrating through very kaolinitic materials. These results contribute to the understanding of the transfers of pedologically formed MOD in the deep aquifers.Under the hypothesis of the appearance of a climate with contrasting seasons, we have been able to show that a 90-day period without rain after the disappearance of the perched water-table would not allow to reach the point of entry of air by drying of superficial horizons. Nevertheless, assuming an air entry, the extrapolation of the experimentally measured mineralization rates under oxic conditions results in a production of atmospheric C around 2.0 1014 g of CO2 per year, which may involve a positive feedback from the global climate system
Adisaputro, Didi. "Metrology and Monitoring of Gases Transfer (CO₂ and CH₄) Processes within the System of Geosphere and Biosphere." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0313.
This study is a continuation of our previous geochemical monitoring finding at the injection wells of Rousse 1 ( Total CCS pilot, Lacq- Rousse, France) where it was identified that the soil CO₂ mole fraction (χc) evolution in subsoil was negatively correlated with the level of the water table and the CO₂ sources were attributed to the CO₂-rich aquifers. However, it is still unclear whether this relationship exists in the forest ecosystem, representing a significant proportion of the CO₂ atmospheric budget. For this reason, this thesis focuses on monitoring the gas exchange and its main driver of the transport process between soil (-1 m), subsoil (-6 m), and biosphere. We developed and implemented an in-situ geochemical monitoring system for continuous monitoring of CO₂ mole fraction in the subsoil coupled with a micrometeorological monitoring system using a pre-established flux tower in the forest Ecosystem (Montiers, Lorraine Region, France). This soil gas measurement infrastructure combining borehole measurement with micrometeorological measurement offers great possibilities for long-term in-situ and continuous gas monitoring to derive the vertical distribution of CO₂. Thus, this infrastructure allowed the observation of the temporal dynamics in soil-gas CO₂ research. During the study periods, the ecosystem acted as a net carbon sink with a mean annual NEE, GPP, and Reco of -453±122 gC m-2y-1, -1468 ±109 gC m-2y-1, and 1052 ±88 gC m-2y-1 consecutively. The Carbon exchange, climate, and environmental drivers during the drought episodes were compared with long-term reference data recorded from 2014 to 2017. In contrast with some previous research where GPP and Reco parallelly decreased during the drought episodes, our site showed Reco is more sensitive to drought than GPP, resulting in a significant increase in Net Ecosystem exchange. Reco decreased by 20%, and 26% were found in Summer and Autumn (2018-2019) relative to the ref erence years (2014-2017). This study shows strong empirical shreds of evidence that wind turbulence plays a significant role in driving the deep soil CO₂ concentration. We hypothesize that this could be due to pressure pumping effects where it decreases the CO₂ molar fraction in the soil during high turbulence and increasing the CO₂ storage in deep soil during low turbulence. This study also demonstrates that permeability significantly reduced during wet periods diminishing molecular diffusion and advection. This study also revealed a strong biotic influence on CO₂ production. The δ¹³CCO₂ values in our site subsoil can be attributed to respiration and decomposition of the C3 plants. These biological origins of soil CO₂ are highly likely increases air density resulting in gravitational percolation that leads the CO₂ stored in a deeper layer of soil. The relationship of subsoil gases also emphasizes that biogenic components dominate the origins and controlling process of subsoil CO₂ while the geochemical process plays an insignificant role
Aubertin, Marie-Liesse. "Biochar-compost mixtures : interactions and impact on carbon sequestration and soil fertility." Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS173.
In the context of global challenge, innovative organic amendment strategies could be used to improve soil agronomic properties in addition to increasing carbon (C) sequestration in soil. The combination of highly stable biochar with compost, a nutrient-rich material containing labile C, may be a solution to improve C sequestration while enhancing soil fertility in the context of a circular economy. Aim of the thesis was to examine if there are biochar-compost interactions and if yes, what are the mechanisms determining their effect on C and nitrogen (N) dynamics and plant growth, at different time scales. To this end we used laboratory and field experiments and analyzed for biological and thermal stability. The thermal stability of biochar was affected by biocharcompost interactions, which may already occur during their blending. Artificial weathering influenced the biological stability of both materials. Under field conditions, these processes did not significantly influence the carbon dynamics of the mixture, while biochar friability and N dynamics were affected by biochar-compost interactions. We conclude that biochar and compost interactions may occur at different time scales and affect their material properties and performance as soil amendment
Venet, Saphir. "Stockage du CO2 et séparation CO2/CH4 par des matériaux de silice à porosité et fonctionnalité contrôlées : étude expérimentale et modélisation de dynamique moléculaire." Thesis, Pau, 2018. http://www.theses.fr/2018PAUU3027/document.
This work aims to evaluate the performance of silica-based materials and to rationalize their synthesis according to their desired adsorption properties (capacity and/or selectivity) by combining experimental approaches and the management of the molecular animal. These materials are ideally suited for CO2 adsorption capacity but also CO2/ CH4 selectivity. The different stages of this work were:- the synthesis and functionalization of the silica materials,- their textural and chemical characterization,- the determination of CO2 adsorption capacities, of their CO2/ CH4 selectivity.- the characterizations by various spectroscopic and microscopic techniques of tests to try to locate the adsorption of CO2 and to measure its mobility,- microscopic identification by the factor of physic-Factors influence the preferential adsorption of CO2 and its diffusivity in the role of hydrophilic / hydrophobic character in silica by functional.These objectives required the preparation of high specific surface materials through a simple sol-gel process. These materials have been modified in order to obtain a degree of functionalization with -CH3 groups sufficient to modify the hydrophilic nature of the material while maintaining a sufficient specific surface area. The influence of pore size was also probed.The adsorption capacities of the gases under pressure were carried out for pure gases but also on CO2/ CH4 mixtures in different proportions. The CH4/ CO2 selectivity, often estimated from the pure body isotherms and / or the IAST method, was in this case determined from the direct measurement of the isotherms of the gas mixtures. It has become apparent that water plays a crucial role in adsorption capacity and selectivity. This parameter is one of those studied through molecular dynamics simulations. The influence of the introduction of hydrophobic groups has also been explored.The results obtained by molecular dynamics are on the whole in good agreement with the experimental data. These two parallel experience / theory approaches have highlighted the selectivity of one of the materials for applications where the gaseous effluent is little loaded with CO2
Hatton, Pierre-Joseph. "Séquestration du carbone et de l’azote des feuilles de hêtre dans les associations organo-minérales du sol : Approches macroscopiques, nanométriques & moléculaires." Electronic Thesis or Diss., Paris, AgroParisTech, 2012. http://www.theses.fr/2012AGPT0050.
Organo-mineral associations play a key role in the long-term sequestration of organic matter in forest soils. However, knowledge about the contribution of the different types of organo-mineral associations and the microbial processes involved in soil organic matter stabilisation is scant. To solve it, stable isotope techniques have been combined with the sequential density fractionation of organo-mineral associations. Isolated fractions were investigated in field and in lab, at different temporal (from 8 hours to 12 years) and spatial scales (macro-, submicron- and molecular scales).Four types of organo-mineral associations were distinguished: plant debris with little mineral attached, plant aggregates, microbial aggregates and mineral grains. Isotopically labeled beech leaf litters were tracked at a decadal time-scale to reveal transfers in between organo-mineral associations. Both litter-derived carbon and nitrogen entered the soil as plant fragments to progressively pass through plant and microbial aggregates. Aggregates appeared particularly meaningful for the stabilisation of litter-derived carbon and nitrogen at a decadal time-scale. Little of the litter-derived carbon and nitrogen was found quickly stabilized to mineral grains. Microbial activities appeared as a major controlling factor for the evolvement of organo-mineral associations, responsive for the transfers of litter-derived carbon and nitrogen. Indeed, plant debris colonized by microorganisms are progressively trapped into plant aggregates. As decomposition proceeds, plant aggregates disrupt into denser microbial aggregates. These aggregates are loaded with lesser organic matter, but enriched in stable microbial materials.Stabilisation by soil microorganisms has been studied at the macro-, submicronand molecular- scales, using mostly NanoSIMS and LC-IRMS. Microbial stabilization operated (i) directly through immobilization in microbial cells and, (ii) indirectly through large production of extracellular microbial products. By calibrating the NanoSIMS for accurate C/N ratios, extracellular microbial products have been shown to be stabilized onto organo-mineral associations without apparent control of the mineral-attached organic matter chemistry. The incorporation of 13C tracers into amino sugars, biomarkers of bacterial and fungal biomasses, revealed that living microorganisms grow where the resource is, but accumulate in microbial aggregates. Microbial biomasses moved from plant debris to microbial aggregates, likely along with the transfers of decaying litter residues as described above.This work points aggregates as meaningful organo-mineral associations for the sequestration of litter-derived carbon and nitrogen at the decadal time-scale. It also revealed the role of microorganisms in the transfers and stabilization of litterderived carbon and nitrogen within organo-mineral associations
Sublet, Marcq Julie. "Membranes et procédés pour l’abattement de la teneur en dioxyde de carbone dans les fumées." Rouen, 2007. http://www.theses.fr/2007ROUES052.
The present work brings an other point of view concerning the CO2 separation from flue gases by using membrane technology. The study of the permeation properties of the commercial copolymers Pebax® as well as the analysis of the gas separation performances of composite membranes by means of mathematical modelling are presented. The aim was to modified the best Pebax® grade with a simple technique to improve the material properties for CO2/N2 separation. Composite membranes made of a thin layer of Pebax® supported by a porous substrate were next designed and analysed. Potential performances concerning CO2 postcombustion capture were calculated. The blend of Pebax® 1657 with polyethylene glycol gives PCO2 = 127. 9 Barrers and alphaCO2/N2 = 79. 9. Modellings based on a crossflow permeator showed that the membrane process could be competitive for CO2 postcombustion capture under certain operating conditions (CO2 concentration, pressure and temperature)
Scheiner, Javier David. "Spéciation du carbone, de l'azote et du phosphore de différentes boues de stations d'épuration au cours de leurs incubations contrölées dans deux types de sol." Toulouse, INPT, 2005. http://ethesis.inp-toulouse.fr/archive/00000379/.
Sallih, Zaher. "Relations entre activité rhizosphérique et décomposition de la matière organique des sols au niveau de la biomasse microbienne et de la minéralisation du carbone et de l'azote." Montpellier 2, 1990. http://www.theses.fr/1990MON20138.
Trinsoutrot-Gattin, Isabelle. "Influence de la qualité biochimique et de la teneur en azote de résidus de colza (Brassica napus L) sur les biotransformations du carbone et de l'azote au cours de leur décomposition dans le sol." Lyon 1, 1999. http://www.theses.fr/1999LYO10070.
Rogeon, Hervé. "Influence de la gestion des sols sur la structure et la dynamique du carbone organique." Poitiers, 2010. http://theses.edel.univ-poitiers.fr/theses/2010/Rogeon-Herve/2010-Rogeon-Herve-These.pdf.
Carbon dioxide sequestration in plant and carbon storage in soil and biomass could be considered as a complementary solution against the increase in concentration of gases responsible for climate change. The aim of this work is to understand the mechanisms of organic matter stabilization in the deepest horizons of soils. The influence of landuse, minerals and amendment with organic matter (compost) on the carbon dynamic has been studied. Four soils representing different landuses (grassland, forest and arable soil) were characterized. The organic matter decreases in amount with depth and becomes more refractory. The relatively high amount of organic matter in deep horizons is probably related to the strong presence of clays and to the low biological activity. The different vegetations seem to influence strongly the quantity of soil organic carbon while affecting slightly its quality. Indeed, the structural study of organic matter shows weak differences whereas the amount of carbon and lipids are more important in arable soil. The study of organomineral associations revealed that the bacterial contribution is more important in fine fractions. Amendment with organic matter of an arable soil affects the biological activity and improves its structural stability. The distribution of the different forms of organic matter has been modified and the presence of molecules originating from the compost in lipids and humic substances show an incorporation of exogenous carbon
Книги з теми "Sols – Teneur en dioxyde de carbone":
1958-, Kurz Werner Alexander, Canada-British Columbia Partnership Agreement on Forest Resource Development: FRDA II., Canadian Forest Service, and British Columbia. Ministry of Forests., eds. The carbon budget of British Columbia's forests, 1920-1989: Preliminary analysis and recommendations for refinements. Victoria, B.C: Canadian Forest Service, 1996.
Smith, W. Soil degradation risk indicator: Organic carbon component. Ottawa: Agriculture and Agri-Food Canada, 1997.
Vercammen, James. Dynamic economic modeling of soil carbon. [Ottawa]: Agriculture and Agri-Food Canada, 2002.
Follett, R. F., R. Lal, and J. M. Kimble. Agricultural practices and policies for carbon sequestration in soil. Boca Raton, Fla: Lewis Publishers, 2002.
Smyth, C. E. Decreasing uncertainty in CBM-CFS3 estimates of forest soil carbon sources and sinks through use of long-term data from the Canadian Intersite Decomposition Experiment. Victoria, B.C: Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, 2010.
M, Kimble J., ed. Soil carbon management: Economic, environmental and societal benefits. Boca Raton, FL: CRC Press, 2007.
Hansen, Soren, M. J. Shaffer, and Liwang Ma. Modeling Carbon and Nitrogen Dynamics for Soil Management. Taylor & Francis Group, 2019.