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Academic literature on the topic 'Pédologie expérimentale'
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Journal articles on the topic "Pédologie expérimentale"
Leroux, Louise, Johan Oszwald, Benjamin Ngounou Ngatcha, David Sebag, Marie-Josée Penven, and Eric Servat. "Le bassin versant du Mayo-Tsanaga (Nord Cameroun) : un bassin versant expérimental pour une compréhension des relations Homme/Milieu." Revue Française de Photogrammétrie et de Télédétection, no. 202 (April 16, 2014): 42–54. http://dx.doi.org/10.52638/rfpt.2013.50.
Full textDejoux, Jean-François, Gérard Dedieu, Olivier Hagolle, Danièle Ducrot, Jean-Claude Menaut, Eric Ceschia, Frédéric Baup, et al. "Kalideos OSR MiPy : un observatoire pour la recherche et la démonstration des applications de la télédétection à la gestion des territoires." Revue Française de Photogrammétrie et de Télédétection, no. 197 (April 22, 2014): 17–30. http://dx.doi.org/10.52638/rfpt.2012.79.
Full textLagacherie, Philippe, Bertrand Laroche, Patrick Le Gouée, Bernard Lestrade, and Laurent Rigou. "Une démarche de co-construction de la connaissance pédologique par les agriculteurs et les pédologues. L’exemple de l’Aire d’Alimentation de Captage de la Gimone (82)." Agronomie, environnement & sociétés 11, no. 2 (December 15, 2021). http://dx.doi.org/10.54800/aac554.
Full textDissertations / Theses on the topic "Pédologie expérimentale"
Le, Gouée Patrick. "L'impact de la sécheresse sur le comportement hydrique, thermique et structural de sols cultivés : approche expérimentale en milieux tempéré, océanique et méditerranéen." Caen, 1998. http://www.theses.fr/1998CAEN1234.
Full textThe study of the drought of the soil requires a particular knowledge of the soils and their reactions to water. But to a geographer, it requires as well to locate these soils, on one hand, from a topographic point of view (interfluvial, side) taking into account slope, exposure and topoclimate, on the other hand, in different county contexts which can be found in France, so that to permit a comparative study. The study of Norman soils takes an important place here, but as well, the study of drought of the soil in areas where it is a most usual factor, that is to say in the Mediterranean area, seems an obvious necessity. This work has been based on three differents types of experimentations on the measure of the impact of droughts on cultivated surfaces of the soil, in a natural environment as well as in a semi-natural environment and in laboratories. In natural environment, in Basse-Normandy as well as in the Drôme provençale and in the south of Lauragais , we performed an experimentation on the part plaid by the site conditions (interfluvial and side topographies), the exposure (south facing slope and north facing side), the slope and the stone amount. In laboratory, experimentations in totally controlled conditions tried to define precisely the part plaid by different parametres, which were then singled out. That was not always possible to do, when experimentations were carried out on the spot : such as experimentations on the presence and the nature of the stone amount and on the fissural and poral space. Last, the experimentations in semi-natural environment, in the Basse-Normandie studied area of Douvres-la-Délivrande has allowed to put samples of soils of different natures and origines through the same natural meteoric conditions it seems that, on a large scale, droughts of the soil are all the more important as the evaporative need of the atmosphere is strong and regular, as the soil is situated and on the steep side, as the amount of stones is hign and preferably of a siliceous nature, as the soil porosity texture and structure favour transfer of liquid and gas processes and early and brutal release of the water reserve of the soil during parching and last, as the soil warms up easily so as to guarantee a good vaporization on the water
Quénard, Laurence. "Analyse d'un processus pédogénétique par une approche expérimentale : le lessivage des argiles dans le sol." Phd thesis, Université d'Orléans, 2011. http://tel.archives-ouvertes.fr/tel-00703478.
Full textLibessart, Gwendal. "Modélisation prédictive des propriétés des sols urbains basée sur leur historique d'usages." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0120.
Full textLand take and the associated environmental issues (heat islands, flooding, biodiversity degradation) have become a major issue in urban planning and development. The objective of this thesis is to propose an approach to characterise urban soils based on the analysis of their historical trajectory of land use, considering that the land use successions and the associated human practices determine the physico-chemical properties of soils. To do this, a scientific approach based on three complementary approaches was carried out to achieve an operational methodological proposal for predictive mapping of urban soil properties. The first approach is cartographic and documentary, and aims to better characterise the historical trajectories of urban soils and thus to better understand all of the human practices that the soils have undergone over time. It turns out that twenty historical trajectories are sufficient to describe the majority of the surface area of an urban unit. Moreover, the majority of historical trajectories represent land use successions composed of a maximum of one or two land uses, showing a low dynamic of land use changes and practices over time. The second approach is a field approach aimed at characterising the impact of three historical trajectories representative of urban soils on the physico-chemical properties of soils. It highlights the link between the historical trajectory of a soil and its physical and chemical properties. The impact of human practices on soil properties also appears to be dependent on the intensity of the practices carried out on the soil. These links, which are still underdeveloped, could be highlighted by the development of a new concept: the "anthroposequence". The last approach is an experimental approach that helps to characterise the pedogenetic processes involved during these historical trajectories and to describe the evolution of physico-chemical properties over time. It shows that the individual effects of practices can be contrary to the effect resulting from the whole of these practices. Moreover, the pedogenetic processes put forward during these experiments reflect the reality of the field, thus reinforcing the proposed experimental method. Thus, these three methodological approaches were finally discussed in order to transcribe the results obtained into "simple" rules allowing the cartographic prediction of soil types and certain agronomic parameters in urban environments through the knowledge of historical trajectories
Van, Den Bogaert Romain. "Analyse des mécanismes du lessivage des argiles dans les sols par des approches expérimentales." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4315/document.
Full textClay translocation is a widespread process of particle transfer from a surface eluviated horizon to a deeper illuviated horizon. Nevertheless, a number of gaps persist in understanding this process. We therefore investigated: the water flow processes in the active porosity, the effect of rain-interrain cycles on the retention of particles, and the consequences of physical and chemical disturbances of the soil solution on the stability of soil particles in suspension. To address these issues, we have made the choice of a laboratory reductionist approach coupled with modern analytical methods, poorly used in soil science. As a model materials, we used undisturbed luvisol E horizons and natural clay particles extracted from these horizons. We show experimentaly for the first time that macroporous preferential flow consist in rivulets. Our work also provides a first step towards estimating the water-soil specific surface area. We show that particle retention occurs in the matrix close to active macropores, the thickness of the concern matrix being a function of the interrain duration. Finally we have shown that the variations of the calcium concentration and pH of the soil solution, subsequent to the infiltration of rain water into the pores, cause a change in the arrangement of the particles in the soil suspension on a timescale corresponding to the duration of a rainfall event