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Статті в журналах з теми "Ruissellement agricole":
Lafrance, P., O. Banton, and P. Gagné. "Exportation saisonnière d'herbicides vers les cours d'eau mesurée sur six champs agricoles sous quelques pratiques culturales du maïs (Basses-Terres du St-Laurent)." Revue des sciences de l'eau 10, no. 4 (April 12, 2005): 439–59. http://dx.doi.org/10.7202/705288ar.
Mathier, L., and A. G. Roy. "Hydrogrammes de ruissellement superficiel et transport des sédiments en milieu agricole." Revue des sciences de l'eau 5, no. 1 (April 12, 2005): 1–21. http://dx.doi.org/10.7202/705117ar.
El Hage Hassan, Hussein, Laurence Charbel, and Ninon Blond. "L’impact du Terrassement des Versants sur L’érosion Dans le Pourtour Occidental du Plateau du Jord Tannourine-Aaqoura (Liban)." Revue Internationale de Géomatique 32 (December 27, 2023): 53–78. http://dx.doi.org/10.32604/rig.2023.043180.
Zongo, Bétéo, Abdoulaye Diarra, Bruno Barbier, Malicki Zorom, Harouna Karambiri, Souleymane Ouédraogo, Patrice Toé, Yacouba Hamma, and Thomas Dogot. "Évaluation ex ante de l’irrigation de complément dans un contexte sahélien : couplage d’un modèle biophysique à un modèle économique d’exploitation agricole." BASE, no. 3 (2019): 174–87. http://dx.doi.org/10.25518/1780-4507.18056.
Lajili-Ghezal, L. "Utilisation du modèle KINEROS pour la simulation des hydrogrammes et des turbidigrammes en zone semi-aride tunisienne." Revue des sciences de l'eau 17, no. 2 (April 12, 2005): 227–44. http://dx.doi.org/10.7202/705532ar.
Larocque, M., O. Banton, P. Lafrance, M. Larocque, O. Banton, and P. Lafrance. "Simulation par le modèle AgriFlux du devenir de l'atrazine et du dééthylatrazine dans un sol du Québec sous mais sucré." Revue des sciences de l'eau 11, no. 2 (April 12, 2005): 191–208. http://dx.doi.org/10.7202/705303ar.
Andrieux, P., M. Voltz, and A. Durbec. "Fonctionnement hydrologique d'un interfluve sédimentaire de la plaine côtière ancienne de Guyane Française." Revue des sciences de l'eau 9, no. 1 (April 12, 2005): 51–74. http://dx.doi.org/10.7202/705242ar.
Gueye, Mouhamadou Thierno, Dame Bop, Aissatou Ndoye, and Sabrina Sorlini. "Amélioration De La Qualité Des Eaux (Eaux Usées, Nappe Phréatique Et Lac) Par Phytoépuration Dans La Zone Du Technopole De Dakar (Sénégal)." International Journal of Progressive Sciences and Technologies 34, no. 1 (September 29, 2022): 416. http://dx.doi.org/10.52155/ijpsat.v34.1.4522.
Lebaut, Sébastien, Abdelghani Qadem, Brahim Akdim, Emmanuel Gille, and Mohamed Laaouane. "Estimation des réserves en eau souterraine régulatrices dans la partie moyen-atlasique du fleuve Sebou (Maroc)." Proceedings of the International Association of Hydrological Sciences 384 (November 16, 2021): 169–73. http://dx.doi.org/10.5194/piahs-384-169-2021.
Simonyi-Poirier, M., R. R. Goulet, and F. R. Pick. "Évaluation de la capacité de rétention des métaux dissous d'un marais artificiel en utilisant le périphyton et le gastéropode Helisoma trivolvis." Revue des sciences de l'eau 16, no. 2 (April 12, 2005): 237–54. http://dx.doi.org/10.7202/705506ar.
Дисертації з теми "Ruissellement agricole":
Augeard, Bénédicte. "Mécanismes de genèse du ruissellement sur sol agricole drainé sensible à la battance. Etudes expérimentales et modélisation." Phd thesis, ENGREF (AgroParisTech), 2006. http://tel.archives-ouvertes.fr/tel-00085072.
Le premier axe est consacré à l'étude de l'évolution de la structure de l'horizon travaillé du sol au cours d'une pluie en présence de nappe superficielle, grâce à des simulations de pluie en laboratoire. Les profils de masse volumique mesurés par radiographie aux rayons X indiquent que l'effondrement et le changement de masse volumique lié à la croûte de battance sont plus marqués en conditions initiales très humides. Le modèle proposé d'évolution de la masse volumique avec la profondeur et au cours de la pluie, reproduit correctement cet effet.
Le deuxième axe a pour objectif de déterminer les propriétés hydrodynamiques de la croûte de battance à partir de données issues de nouvelles simulations de pluie associées à un modèle s'appuyant sur la distribution de la masse volumique du sol avec la profondeur. Les paramètres de ce modèle, estimés par méthode inverse, sont comparables aux mesures de masse volumique effectuées par rayons X, et permettent de correctement reproduire le comportement hydraulique du système, confirmant la forte baisse de la conductivité hydraulique en surface due à la croûte de battance.
Enfin, le troisième axe s'appuie sur le suivi expérimental d'une parcelle agricole drainée du bassin versant de Mélarchez (Seine et Marne) associé à une modélisation (logiciel HYDRUS 2D). Les observations durant l'hiver 2003-2004 confirment que le ruissellement est globalement limité en raison de la présence du drainage. L'affleurement de la nappe reste le facteur prédominant à l'origine du ruissellement, même si la croûte de battance, créée notamment par ce premier type de ruissellement, est susceptible d'augmenter les quantités ruisselées. La modélisation permet d'étudier le comportement du système sous d'autres conditions pluviométriques. En particulier, les périodes de retour des pluies conduisant à l'affleurement de la nappe et les conditions d'écoulement lors de ces affleurements sont analysées.
Augeard, Bénédicte. "Mécanismes de genèse du ruissellement sur sol agricole drainé sensible à la battance : études expérimentales et modélisation." Paris, ENGREF, 2006. https://pastel.archives-ouvertes.fr/tel-00085072.
This study aims at describing and organizing into a hierarchy the processes leading to surface runoff on artificially subsurface drained area, by considering not only the perched water table fluctuations, but also the possible soil surface sealing. Three complementary research issues have been developed. First, the evolution of the tilled layer structure during rainfall in the presence of a shallow water table was observed using laboratory rainfall simulation. Bulk density profiles measured by X-ray radiography show that the increase of bulk density due to sealing and slumping are more significant in the wettest conditions. The proposed bulk density evolution model correctly reproduces this effect. Second, seal hydraulic properties were determined from a model based on bulk density profiles using other simulated rainfall experiments. The estimation of model parameters by inverse method led to an accurate simulation of the measured flows and water pressures, and conformed to the measured bulk density profiles. Hydraulic conductivity greatly decreases at the soil surface due to sealing process. The third issue was based on a drained field investigation in Mélarchez watershed (Seine et Marne) associated to flow modelling (Hydrus 2D). Data recorded in winter 2003-2004 show that drainage limits surface runoff amount. Saturation excess runoff is the most frequent observed process, even if soil sealing, especially due to saturation excess surface runoff, increases runoff amount. Other rainfall conditions were tested using Hydrus 2D. The condition of water table reaching soil surface was particularly analysed in terms of infiltration-runoff flows and return time of the correspond
Smyth, Jill. "Utilisation des données RADARSAT pour l'observation de l'orientation des labours comme paramètre du ruissellement en milieu agricole." Mémoire, Université de Sherbrooke, 2000. http://savoirs.usherbrooke.ca/handle/11143/2299.
Smyth, Jill. "Utilisation des données RADARSAT pour l'observation de l'orientation des labours comme paramètre du ruissellement en milieu agricole." Sherbrooke : Université de Sherbrooke, 2001.
Sundborg, Maude. "Diagnostic d'érosion hydrique dans un bassin versant agricole au moyen d'indices topographiques dérivés d'un relevé lidar aéroporté." Mémoire, Université de Sherbrooke, 2009. http://savoirs.usherbrooke.ca/handle/11143/2599.
Delahaye, géographe Daniel. "Approches spatialisées et analyses expérimentales des phénomènes de ruissellement et d'érosion des sols : Application aux systèmes de production agricole du Calvados." Caen, 1992. http://www.theses.fr/1992CAEN1099.
A research study conducted in northwest France, more precisely in the Calvados department, has permitted the identification of the principal types of erosion. The bocage is the principal region affected by the phenomenon. The development of these erosional processes has been induced by a reduction of the traditional types of cultivation. A spatial approach has been taken which uses a scale ranging from the micro-plot to the water shed. The results obtained permit the proposal of a range of simple anti-erosion techniques easily integrated into agricultural practices
Mansour, Rana. "Anthropisation d'un petit bassin versant sahélien : influence sur l'infiltration et le ruissellement." Montpellier 2, 2000. http://www.theses.fr/2000MON20185.
Phan, Ha Hai An. "Transfert d’eau et de matière sur un petit bassin versant agricole du Nord Vietnam : suivis à l’échelle pluriannuelle et à l’échelle de la crue." Paris 6, 2009. http://www.theses.fr/2009PA066718.
Hallema, Dennis. "Modélisation de l'impact des terrasses agricoles et du réseau d'écoulement artificiel sur la réponse hydrologique des versants." Thesis, Montpellier, SupAgro, 2011. http://www.theses.fr/2011NSAM0022.
Terrace cultivation and artificial drainage were implemented on Mediterranean hillslopes for multiple reasons: agricultural terraces increase arable land surface and artificial drainage allows for better water management. Degradation of terraces and channels inevitably leads to an increase in flood risk, erosion and, eventually, crop damage. Little is known about their effect on hillslope hydrologic response, and therefore this thesis presents an integrated method where we compare different modelling approaches. We first simulated the hydrologic response of a Mediterranean catchment (0.91 km2) with terrace cultivation and artificial drainage using a physically-based, fully distributed storm flow model for agricultural catchments. Simulation performance is impressive for some storms, even though the model does not account for terraces. In order to model the effects of terrace cultivation and artificial drainage on hillslope hydrologic response explicitly, we subsequently developed a new distributed model with only geometric and flow velocity parameters, using a linear response time distribution combined with the hillslope geomorphologic instantaneous unit hydrograph. Simulations on virtual hillslopes and catchments with a non-optimal channel network suggest that (i) drainage is faster and attains higher peak flows for longer interface lengths between agricultural fields and drainage channels; (ii) overland flow velocity has greater influence on peak flow than channel flow velocity; and (iii) the combined effect of increased drainage density and introduction of terrace cultivation is enhanced peak flow at the outlet, and a reduction of peak flow from upstream terraces
Song, Layheang. "Usage des terres, ruissellement de surface, érosion des sols : analyse multi-échelles de l'impact des plantations de teck dans un agro-écosystème montagneux tropical humide." Electronic Thesis or Diss., Toulouse 3, 2021. http://www.theses.fr/2021TOU30188.
Soil erosion is yet known as one of the most concerning problems of the environment in the world. Soil erosion is particularly and increasingly driven by anthropogenic activities under the changing climate. In Lao PDR, a tropical country, soil erosion is significantly due to inappropriate land management on the sloping land. The Houay Pano, a cultivated catchment of the northern Lao PDR, is prone to soil erosion, particularly after the conversion from shifting cultivation to teak tree plantation. Land mismanagement by clearing the understory under the teak tree plantation is considered as an underlying cause of higher runoff coefficient (Rc) and soil erosion. Some mitigations such as understory and riparian vegetation are suggested for alleviating soil erosion. However, the mitigation measure of soil erosion and the effect of land use management on surface runoff (SR) and soil loss/sediment yield (Sl) on multiple scales in the teak tree plantation are not fully assessed. In this context, we hypothesize that understory and riparian grass mitigate the soil erosion in the teak tree plantation and that teak tree plantation impacts on SR and Sl driven by dominant processes (inter rill erosion, linear erosion, and deposition) on various spatial scales. Therefore, the objectives set out for this work are: (1) to assess the effect of understory management on SR and Sl in the teak tree plantation on the microplot scale; (2) to assess the ability of riparian grass buffers to mitigate SR and Sl, and to assess their water and sediment trapping efficiencies in the teak tree plantations with no understory on the hillslope scale; and (3) to assess the effect of teak tree plantation on SR and Sl on various spatial scales (microplot, hillslope including micro-catchment, and catchment scales) in a mixed land uses mountainous tropical catchment. In this study, Ban Kokngew village and Houay Pano catchment were selected as experimental study areas during the rainy season. Microplots, Gerlach traps, and weirs were used to estimate SR and Sl on each scale. We followed the TEST model developed for inter rill erosion, which requires a few parameters, to assess Sl on the microplot and upscale it to predict Sl on the hillslope and catchment scale. In a study performed in 2017 in the teak tree plantations of Ban Kokngew on the microplot scale, we showed that Rc and Sl (23%, 381 Mg·km-2, respectively) under teak tree with understory were less than those under teak tree with no understory (60% and 5455 Mg·km-2, respectively). Hence, soil erosion mitigation by keeping the understory under teak tree plantation reduces Sl by 14 times. In a study performed in 2014 in the teak tree plantations of Houay Pano on both the microplot and the hillslope scales, we showed that leaving the riparian grass buffer of at least 6 m could limit SR and Sl discharging downstream during small storms (24-hour rainfall < 54.8 mm) with the trapping efficiency up to 88%. Lastly, in a study performed in 2014 in the teak tree plantations of Houay Pano on various scales, we showed that SR and Sl were significantly higher (p-value < 0.05) in the teak-dominated micro-catchment than in the mixed-land-use micro-catchment. SR and Sl decreased from the microplot (122 - 196 mm, 275 - 1065 Mg·km-2, respectively) to the micro-catchment (24 - 188 mm, 95 - 3635 Mg·km-2, respectively) and catchment scale (33 mm, 236 Mg·km-2, respectively), except that Sl in teak tree plantation increased from the microplot (1065 Mg·km-2) to the micro-catchment scale (3635 Mg·km-2). [...]