Accueil
Résultat de la recherche
14 résultat(s) recherche sur le mot-clé 'WATER USE' 
trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Ajouter le résultat dans votre panier Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette rechercheSustainable food system policies need to address environmental pressures and impacts: the example of water use and water stress / D. Vanham in Science of the Total Environment, vol. 730 (15 August 2020)
Titre : Sustainable food system policies need to address environmental pressures and impacts: the example of water use and water stress Type de document : objet à 3 dimensions, artefacts, ... Auteurs : D. Vanham, Auteur ; A. Leip, Auteur Année de publication : 2020 Article en page(s) : p. 1-7 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : A HISTOIRE - Pays et ensemble de pays:Ensembles politiques:Union européenne Use for events after November 1993. Otherwise, use "EEC countries".; C ECONOMIE - ECONOMIE SOCIALE ET SOLIDAIRE:Développement économique et social:Développement économique et social:Politique de développement:Stratégie de développement:Développement durableEnvironmentally sound development, which meets the needs of the present without compromising the ability of future generations to meet their own needs.; F POPULATIONS - ETUDES DE CAS:Environmental impactMots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau AGROFOOD SYSTEM SYSTEME AGROALIMENTAIRE SUSTAINABLE DEVELOPMENT DROUGHT STRESS STRESS DU A LA SECHERESSE WATER USE UTILISATION DE L'EAU IMPACT SUR L'ENVIRONNEMENT AGRIENVIRONMENTAL POLICY POLITIQUE AGRIENVIRONNEMENTALE EUROPEAN UNION Résumé : Sustainable food systems are high on the political and research agendas. One of the three pillars of sustainability is environmental sustainability. We argue that, when defining related policies, such as policies under the European Green Deal, both environmental pressures and impacts carry important and complementary information and should be used in combination. Although the environmental focus of a sustainable food system is to have a positive or neutral impact on the natural environment, addressing pressures is necessary to achieve this goal. We show this by means of the pressure water use (or water footprint) and its related impact water stress, by means of different arguments: 1) Water use and water stress are only weakly correlated; 2) water use can be evaluated towards a benchmark, addressing resource efficiency; 3) water use is used for resource allocation assessments within or between economic sectors; 4) water amounts are needed to set fair share amounts for citizens, regions, countries or on a global level 5) the pressure water use requires less data, whereas water stress assessments have more uncertainty and 6) both provide strong communication tools to citizens, including for food packaging labelling. As a result, we present a water quantity sustainability scheme, that addresses both water use and water stress, and can be used in support of food system policies, including food package labelling. En ligne : https://doi.org/10.1016/j.scitotenv.2020.139151 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=248202
in Science of the Total Environment > vol. 730 (15 August 2020) . - p. 1-7[article] Sustainable food system policies need to address environmental pressures and impacts: the example of water use and water stress [objet à 3 dimensions, artefacts, ...] / D. Vanham, Auteur ; A. Leip, Auteur . - 2020 . - p. 1-7.
Langues : Anglais (eng) Langues originales : Anglais (eng)
in Science of the Total Environment > vol. 730 (15 August 2020) . - p. 1-7
Catégories : A HISTOIRE - Pays et ensemble de pays:Ensembles politiques:Union européenne Use for events after November 1993. Otherwise, use "EEC countries".; C ECONOMIE - ECONOMIE SOCIALE ET SOLIDAIRE:Développement économique et social:Développement économique et social:Politique de développement:Stratégie de développement:Développement durableEnvironmentally sound development, which meets the needs of the present without compromising the ability of future generations to meet their own needs.; F POPULATIONS - ETUDES DE CAS:Environmental impactMots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau AGROFOOD SYSTEM SYSTEME AGROALIMENTAIRE SUSTAINABLE DEVELOPMENT DROUGHT STRESS STRESS DU A LA SECHERESSE WATER USE UTILISATION DE L'EAU IMPACT SUR L'ENVIRONNEMENT AGRIENVIRONMENTAL POLICY POLITIQUE AGRIENVIRONNEMENTALE EUROPEAN UNION Résumé : Sustainable food systems are high on the political and research agendas. One of the three pillars of sustainability is environmental sustainability. We argue that, when defining related policies, such as policies under the European Green Deal, both environmental pressures and impacts carry important and complementary information and should be used in combination. Although the environmental focus of a sustainable food system is to have a positive or neutral impact on the natural environment, addressing pressures is necessary to achieve this goal. We show this by means of the pressure water use (or water footprint) and its related impact water stress, by means of different arguments: 1) Water use and water stress are only weakly correlated; 2) water use can be evaluated towards a benchmark, addressing resource efficiency; 3) water use is used for resource allocation assessments within or between economic sectors; 4) water amounts are needed to set fair share amounts for citizens, regions, countries or on a global level 5) the pressure water use requires less data, whereas water stress assessments have more uncertainty and 6) both provide strong communication tools to citizens, including for food packaging labelling. As a result, we present a water quantity sustainability scheme, that addresses both water use and water stress, and can be used in support of food system policies, including food package labelling. En ligne : https://doi.org/10.1016/j.scitotenv.2020.139151 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=248202
Titre : Charting out the future agricultural trade and its impact on water resources Type de document : objet à 3 dimensions, artefacts, ... Auteurs : M. Tuninetti, Auteur ; F. Laio ; L. Ridolfi, Auteur Année de publication : 2020 Article en page(s) : p. 1-12 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : A HISTOIRE - Pays et ensemble de pays:Histoire du Monde Rural:Agriculture ; F POPULATIONS - ETUDES DE CAS:Economic development ; F POPULATIONS - ETUDES DE CAS:Environmental impact ; S SCIENCES ET TECHNIQUES:Pollution, catastrophes et sécurité:Dégradation de l'environnement:Pollution:Pollution de l'eau Mots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau AGRICULTURAL TRADE COMMERCE AGRICOLE WATER RESOURCES RESSOURCE EN EAU HUMAN FEEDING ALIMENTATION HUMAINE FEED INDUSTRY INDUSTRIE DE L'ALIMENTATION ANIMALE WATER FOOTPRINT EMPREINTE HYDRIQUE IMPACT SUR L'ENVIRONNEMENT WATER POLLUTION WATER USE UTILISATION DE L'EAU DEVELOPPEMENT ECONOMIQUE Résumé : International agricultural trade triggers inter-dependency among distant countries, not only in economic terms but also under an environmental perspective. Agricultural trade has been shown to drive environmental threats pertaining to biodiversity loss and depletion and pollution of freshwater resources. Meanwhile, trade can also encourage production where it is most efficient, hence minimizing the use of natural resources required by agriculture. In this study, we provide a country-level assessment of the future international trade for 6 primary crops and 3 animal products composing 70% of the human diet caloric content. We set up four variegate socio-economic scenarios with different level of economic developments, diets habits, population growth dynamics, and levels of market liberalization. Results show that the demand of agricultural goods and the correspondent trade flow will increase with respect to current levels by 10–50% and 74–178% by 2050, respectively. The largest increase in the amount of traded goods is expected under the Economic Optimism scenario that will see an average trade flow of 2830 kcal/cap/day (i.e., nearly doubling the current per-capita flow). Most of the increase will be driven by the trade of crops for animal feeding, particularly maize will be the most traded crop. The trade networks architecture in 2050 and 2080 will be very different from the one we actually know, with a clear shift of the trade pole from the Western toward the Eastern economies. The dramatic changes of global food-sources and trade patterns will jeopardize the water resources of new regions while exacerbating the pressure in those areas that will continue serving food also in the future. In spite of this, trade may annually save around 40–60 m3 of water per person, compared to a situation where countries are self-sufficient. En ligne : https://doi.org/10.1016/j.scitotenv.2020.136626 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=248118
in Science of the Total Environment > vol. 714 (20 April 2020) . - p. 1-12[article] Charting out the future agricultural trade and its impact on water resources [objet à 3 dimensions, artefacts, ...] / M. Tuninetti, Auteur ; F. Laio ; L. Ridolfi, Auteur . - 2020 . - p. 1-12.
Langues : Anglais (eng) Langues originales : Anglais (eng)
in Science of the Total Environment > vol. 714 (20 April 2020) . - p. 1-12
Catégories : A HISTOIRE - Pays et ensemble de pays:Histoire du Monde Rural:Agriculture ; F POPULATIONS - ETUDES DE CAS:Economic development ; F POPULATIONS - ETUDES DE CAS:Environmental impact ; S SCIENCES ET TECHNIQUES:Pollution, catastrophes et sécurité:Dégradation de l'environnement:Pollution:Pollution de l'eau Mots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau AGRICULTURAL TRADE COMMERCE AGRICOLE WATER RESOURCES RESSOURCE EN EAU HUMAN FEEDING ALIMENTATION HUMAINE FEED INDUSTRY INDUSTRIE DE L'ALIMENTATION ANIMALE WATER FOOTPRINT EMPREINTE HYDRIQUE IMPACT SUR L'ENVIRONNEMENT WATER POLLUTION WATER USE UTILISATION DE L'EAU DEVELOPPEMENT ECONOMIQUE Résumé : International agricultural trade triggers inter-dependency among distant countries, not only in economic terms but also under an environmental perspective. Agricultural trade has been shown to drive environmental threats pertaining to biodiversity loss and depletion and pollution of freshwater resources. Meanwhile, trade can also encourage production where it is most efficient, hence minimizing the use of natural resources required by agriculture. In this study, we provide a country-level assessment of the future international trade for 6 primary crops and 3 animal products composing 70% of the human diet caloric content. We set up four variegate socio-economic scenarios with different level of economic developments, diets habits, population growth dynamics, and levels of market liberalization. Results show that the demand of agricultural goods and the correspondent trade flow will increase with respect to current levels by 10–50% and 74–178% by 2050, respectively. The largest increase in the amount of traded goods is expected under the Economic Optimism scenario that will see an average trade flow of 2830 kcal/cap/day (i.e., nearly doubling the current per-capita flow). Most of the increase will be driven by the trade of crops for animal feeding, particularly maize will be the most traded crop. The trade networks architecture in 2050 and 2080 will be very different from the one we actually know, with a clear shift of the trade pole from the Western toward the Eastern economies. The dramatic changes of global food-sources and trade patterns will jeopardize the water resources of new regions while exacerbating the pressure in those areas that will continue serving food also in the future. In spite of this, trade may annually save around 40–60 m3 of water per person, compared to a situation where countries are self-sufficient. En ligne : https://doi.org/10.1016/j.scitotenv.2020.136626 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=248118
Titre : More than just water! Hydraulic materiality and the process of resource making : a sociohydrological reading of Tunisian hillside reservoirs Type de document : objet à 3 dimensions, artefacts, ... Auteurs : J. Riaux, Auteur ; Z. Jenhaoui ; A. Ogilvie, Auteur Année de publication : 2020 Article en page(s) : p. 125-135 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : A HISTOIRE - Pays et ensemble de pays:Afrique:Afrique du Nord:Tunisie ; S SCIENCES ET TECHNIQUES:Hydrologie ; S SCIENCES ET TECHNIQUES:Hydrologie:Gestion des ressources en eau:Conservation de l'eau ; S SCIENCES ET TECHNIQUES:Sciences naturelles:Anthropologie Mots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau WATER RESERVOIRS RESERVOIR D'EAU WATER MANAGEMENT GESTION DES EAUX WATER CONSERVATION SOIL CONSERVATION CONSERVATION DES SOLS INTEGRATED RURAL DEVELOPMENT DEVELOPPEMENT RURAL INTEGRE HYDROLOGY WATER USE UTILISATION DE L'EAU WATERSHEDS BASSIN VERSANT WATERSHED MANAGEMENT AMENAGEMENT DE BASSIN VERSANT TUNISIA Résumé : Fulfilling both “Water and soil conservation” and “Integrated rural development” objectives, hillside reservoirs are very popular components of water and/or rural management strategies. In Central Tunisia, more than 800 reservoirs have been built since the 1950s. These have been the subject of an abundant literature by both social and physical scientists. However, this literature, which is highly segmented and often centred on the technical and economic assessment of development programs, does not help understand the different logics at work in the appropriation of these technical objects by the different actors involved. To achieve this goal, our research based on a "sociohydrological negotiation", articulates the methods and research questions of hydrology and anthropology on a same case study in Central Tunisia. An initial survey of water use and management practices around hillside reservoirs in the Merguellil Catchment revealed the wide variety of the infrastructures and the multiple functions they fulfil. These initial observations underpinned the process of negotiating an interdisciplinary framework to analyze the social, physical and technical dimensions of hillside reservoirs. To trace the history of watershed development policies implemented in the Merguellil Catchment, we first examined the multiple embedded logics underlying Tunisian hillside reservoir planning. This led to the production of “sociohydrological narratives” for four hillside reservoirs that both combined and enabled us to analyze the inhabitants’ own accounts of their reservoir history. This ethnographical material was then examined through the lense of a “resource making process”. Considering the way in which hydraulic objects function in a landscape that is both socio-political and hydrological enabled us to analyze the different aspects of this resource making process, from water valuation to the production of “hydraulic localities”. En ligne : https://doi.org/10.1016/j.jrurstud.2020.08.041 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=252092
in Journal of rural studies > vol. 79 (October 2020) . - p. 125-135[article] More than just water! Hydraulic materiality and the process of resource making : a sociohydrological reading of Tunisian hillside reservoirs [objet à 3 dimensions, artefacts, ...] / J. Riaux, Auteur ; Z. Jenhaoui ; A. Ogilvie, Auteur . - 2020 . - p. 125-135.
Langues : Anglais (eng) Langues originales : Anglais (eng)
in Journal of rural studies > vol. 79 (October 2020) . - p. 125-135
Catégories : A HISTOIRE - Pays et ensemble de pays:Afrique:Afrique du Nord:Tunisie ; S SCIENCES ET TECHNIQUES:Hydrologie ; S SCIENCES ET TECHNIQUES:Hydrologie:Gestion des ressources en eau:Conservation de l'eau ; S SCIENCES ET TECHNIQUES:Sciences naturelles:Anthropologie Mots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau WATER RESERVOIRS RESERVOIR D'EAU WATER MANAGEMENT GESTION DES EAUX WATER CONSERVATION SOIL CONSERVATION CONSERVATION DES SOLS INTEGRATED RURAL DEVELOPMENT DEVELOPPEMENT RURAL INTEGRE HYDROLOGY WATER USE UTILISATION DE L'EAU WATERSHEDS BASSIN VERSANT WATERSHED MANAGEMENT AMENAGEMENT DE BASSIN VERSANT TUNISIA Résumé : Fulfilling both “Water and soil conservation” and “Integrated rural development” objectives, hillside reservoirs are very popular components of water and/or rural management strategies. In Central Tunisia, more than 800 reservoirs have been built since the 1950s. These have been the subject of an abundant literature by both social and physical scientists. However, this literature, which is highly segmented and often centred on the technical and economic assessment of development programs, does not help understand the different logics at work in the appropriation of these technical objects by the different actors involved. To achieve this goal, our research based on a "sociohydrological negotiation", articulates the methods and research questions of hydrology and anthropology on a same case study in Central Tunisia. An initial survey of water use and management practices around hillside reservoirs in the Merguellil Catchment revealed the wide variety of the infrastructures and the multiple functions they fulfil. These initial observations underpinned the process of negotiating an interdisciplinary framework to analyze the social, physical and technical dimensions of hillside reservoirs. To trace the history of watershed development policies implemented in the Merguellil Catchment, we first examined the multiple embedded logics underlying Tunisian hillside reservoir planning. This led to the production of “sociohydrological narratives” for four hillside reservoirs that both combined and enabled us to analyze the inhabitants’ own accounts of their reservoir history. This ethnographical material was then examined through the lense of a “resource making process”. Considering the way in which hydraulic objects function in a landscape that is both socio-political and hydrological enabled us to analyze the different aspects of this resource making process, from water valuation to the production of “hydraulic localities”. En ligne : https://doi.org/10.1016/j.jrurstud.2020.08.041 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=252092
Titre : The impact of climate changes on the water footprint of wheat and maize production in the Nile Delta, Egypt Type de document : objet à 3 dimensions, artefacts, ... Auteurs : A. Elbeltagi, Auteur ; A. Srivastava ; B. Mehdinejadiani ; A. Malik ; J. Deng ; A.S. Bhatia ; M.R. Aslam, Auteur Année de publication : 2020 Article en page(s) : p. 1-13 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : A HISTOIRE - Pays et ensemble de pays:Afrique:Afrique du Nord:Égypte ; A HISTOIRE - Pays et ensemble de pays:Histoire du Monde Rural:Agroéconomie:Production agricole ; S SCIENCES ET TECHNIQUES:Météorologie:Hydrométéorologie:Cycle hydrologique:Évapotranspiration Water loss through evaporation.; S SCIENCES ET TECHNIQUES:Pollution, catastrophes et sécurité:Dégradation de l'environnement:Changement climatiqueMots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau CLIMATIC CHANGE WATER FOOTPRINT EMPREINTE HYDRIQUE AGRICULTURAL PRODUCTION WHEATS BLE MAIZE MAIS WATER USE UTILISATION DE L'EAU WATER RESOURCES RESSOURCE EN EAU CROP YIELD RENDEMENT DES CULTURES AGRICULTURAL SECTOR SECTEUR AGRICOLE NILE RIVER NIL EGYPT Résumé : Spatial-temporal information of different water resources is essential to rationally manage, sustainably develop, and optimally utilize water. This study focused on simulating future water footprint (WF) of two agronomically important crops (i.e., wheat and maize) using deep neural networks (DNN) method in Nile delta. DNN model was calibrated and validated by using 2006–2014 and 2015–2017 datasets. Moreover, future data (2022–2040) were obtained from three Representative Concentration Pathways (RCP) 2.6, 4.5, and 8.5, and incorporated into DNN prediction set. The findings showed that determination-coefficient between historical-predicted crop evapotranspiration (ETc) varied from 0.92 to 0.97 for two crops. The yield prediction values of wheat-maize deviated within the ranges of −3.21% to 3.47% and −4.93% to 5.88%, respectively. Based on the ensemble of RCP, precipitation was forecasted to decease by 667.40% and 261.73% in winter and summer in western as compared to eastern, respectively, which will ultimately be dropped to 105.02% and 60.87%, respectively parallel to historical. Therefore, the substantial fluctuations in precipitation caused an obvious decrease in green WF of wheat (i.e., 24.96% and 37.44%) in western and eastern, respectively. Additionally, for maize, it induced a 103.93% decrease in western and an 8.96% increase in eastern. Furthermore, increasing ETc by 8.46% and 12.45% gave rise to substantially increasing (i.e., 8.96% and 17.21%) in western for wheat-maize compared to the east, respectively. Likewise, grey wheat-maize WF findings reveals that there was an increase of 3.07% and 5.02% in western as compared to −14.51% and 12.37% in eastern. Hence, our results highly recommend the optimal use of the eastern delta to save blue-water by 16.58% and 40.25% of total requirements for wheat-maize in contrast to others. Overall, the current research framework and results derived from the adopted methodology will help in optimal planning of future water under climate change in the agricultural sector. En ligne : https://doi.org/10.1016/j.scitotenv.2020.140770 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=255522
in Science of the Total Environment > vol. 743 (15 November 2020) . - p. 1-13[article] The impact of climate changes on the water footprint of wheat and maize production in the Nile Delta, Egypt [objet à 3 dimensions, artefacts, ...] / A. Elbeltagi, Auteur ; A. Srivastava ; B. Mehdinejadiani ; A. Malik ; J. Deng ; A.S. Bhatia ; M.R. Aslam, Auteur . - 2020 . - p. 1-13.
Langues : Anglais (eng) Langues originales : Anglais (eng)
in Science of the Total Environment > vol. 743 (15 November 2020) . - p. 1-13
Catégories : A HISTOIRE - Pays et ensemble de pays:Afrique:Afrique du Nord:Égypte ; A HISTOIRE - Pays et ensemble de pays:Histoire du Monde Rural:Agroéconomie:Production agricole ; S SCIENCES ET TECHNIQUES:Météorologie:Hydrométéorologie:Cycle hydrologique:Évapotranspiration Water loss through evaporation.; S SCIENCES ET TECHNIQUES:Pollution, catastrophes et sécurité:Dégradation de l'environnement:Changement climatiqueMots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau CLIMATIC CHANGE WATER FOOTPRINT EMPREINTE HYDRIQUE AGRICULTURAL PRODUCTION WHEATS BLE MAIZE MAIS WATER USE UTILISATION DE L'EAU WATER RESOURCES RESSOURCE EN EAU CROP YIELD RENDEMENT DES CULTURES AGRICULTURAL SECTOR SECTEUR AGRICOLE NILE RIVER NIL EGYPT Résumé : Spatial-temporal information of different water resources is essential to rationally manage, sustainably develop, and optimally utilize water. This study focused on simulating future water footprint (WF) of two agronomically important crops (i.e., wheat and maize) using deep neural networks (DNN) method in Nile delta. DNN model was calibrated and validated by using 2006–2014 and 2015–2017 datasets. Moreover, future data (2022–2040) were obtained from three Representative Concentration Pathways (RCP) 2.6, 4.5, and 8.5, and incorporated into DNN prediction set. The findings showed that determination-coefficient between historical-predicted crop evapotranspiration (ETc) varied from 0.92 to 0.97 for two crops. The yield prediction values of wheat-maize deviated within the ranges of −3.21% to 3.47% and −4.93% to 5.88%, respectively. Based on the ensemble of RCP, precipitation was forecasted to decease by 667.40% and 261.73% in winter and summer in western as compared to eastern, respectively, which will ultimately be dropped to 105.02% and 60.87%, respectively parallel to historical. Therefore, the substantial fluctuations in precipitation caused an obvious decrease in green WF of wheat (i.e., 24.96% and 37.44%) in western and eastern, respectively. Additionally, for maize, it induced a 103.93% decrease in western and an 8.96% increase in eastern. Furthermore, increasing ETc by 8.46% and 12.45% gave rise to substantially increasing (i.e., 8.96% and 17.21%) in western for wheat-maize compared to the east, respectively. Likewise, grey wheat-maize WF findings reveals that there was an increase of 3.07% and 5.02% in western as compared to −14.51% and 12.37% in eastern. Hence, our results highly recommend the optimal use of the eastern delta to save blue-water by 16.58% and 40.25% of total requirements for wheat-maize in contrast to others. Overall, the current research framework and results derived from the adopted methodology will help in optimal planning of future water under climate change in the agricultural sector. En ligne : https://doi.org/10.1016/j.scitotenv.2020.140770 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=255522
Titre : A theoretical approach for the domestic and rural impact on the water quality of coastal lagoons Type de document : objet à 3 dimensions, artefacts, ... Auteurs : G. Sylaios ; Y. Koytroymanidis Année de publication : 2002/06 Article en page(s) : p. 9-13 Présentation : 13 réf., 5 tabl. Langues : Anglais (eng) Langues originales : Anglais (eng) Français (fre) Catégories : A HISTOIRE - Pays et ensemble de pays:Histoire de l'Europe:Europe occidentale:Grèce ; S SCIENCES ET TECHNIQUES:Hydrologie:Qualité de l'eau ; S SCIENCES ET TECHNIQUES:Hydrologie:Qualité de l'eau:Analyse de l'eau ; S SCIENCES ET TECHNIQUES:Sciences de l'environnement et ingénierie:Environnement ; S SCIENCES ET TECHNIQUES:Sciences de la chimie:Élément chimique:Phosphore ; S SCIENCES ET TECHNIQUES:Sciences de la chimie:Gaz:Azote Mots-clés : GREECE WATER QUALITY ENVIRONMENT COASTAL LAGOONS LAGUNE LITTORALE WATER ANALYSIS WATER USE UTILISATION DE L'EAU NITROGEN PHOSPHORUS Résumé : Un simple modèle théorique a été employé pour étudier l'impact des activités ménagères et agricoles sur la qualité des eaux des lagunes de la rivière Nestos (Vassona, Eratino et Keramoti). Les taux totaux d'azote et de phosphore dégagés par chaque activité qui se déroule à la périphérie de ces lagunes ont été estimés sous forme de coefficients de décharge des eaux résiduaires comme décrit par LOICZ. Il en résulte que 51,5 tonnes d'azote et 10,6 tonnes de phosphore s'accumulent dans les eaux de ces lagunes chaque année. L'épandage agricole (41,1 pourcent), les activités ménagères (32,2 pourcent) et l'élevage (26,7 pourcent) contribuent le plus à apporter de l'azote. Les déchets provenant de l'élevage (60,6 pourcent) et les déchets urbains (29,7 pourcent) contribuent le plus à apporter du phosphore. L'épandage contribue dans une moindre mesure à apporter du phosphore (9,7 pourcent). Les quantités d'azote et de phosphore inorganiques dissoutes et atteignant les lagunes ont été comparées à celles observées dans l'eau des lagunes durant la période 1994-1996. Il semble que l'approche théorique sous-estime légèrement les taux d'azote et de phosphore inorganiques dissouts, quoique cette différence puisse être attribuée à l'apport d'éléments à travers l'ouverture maritime de chaque lagune Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=137363
in New Medit > vol. 1, n. 2 (2002/06) . - p. 9-13[article] A theoretical approach for the domestic and rural impact on the water quality of coastal lagoons [objet à 3 dimensions, artefacts, ...] / G. Sylaios ; Y. Koytroymanidis . - 2002/06 . - p. 9-13 : 13 réf., 5 tabl.
Langues : Anglais (eng) Langues originales : Anglais (eng) Français (fre)
in New Medit > vol. 1, n. 2 (2002/06) . - p. 9-13
Catégories : A HISTOIRE - Pays et ensemble de pays:Histoire de l'Europe:Europe occidentale:Grèce ; S SCIENCES ET TECHNIQUES:Hydrologie:Qualité de l'eau ; S SCIENCES ET TECHNIQUES:Hydrologie:Qualité de l'eau:Analyse de l'eau ; S SCIENCES ET TECHNIQUES:Sciences de l'environnement et ingénierie:Environnement ; S SCIENCES ET TECHNIQUES:Sciences de la chimie:Élément chimique:Phosphore ; S SCIENCES ET TECHNIQUES:Sciences de la chimie:Gaz:Azote Mots-clés : GREECE WATER QUALITY ENVIRONMENT COASTAL LAGOONS LAGUNE LITTORALE WATER ANALYSIS WATER USE UTILISATION DE L'EAU NITROGEN PHOSPHORUS Résumé : Un simple modèle théorique a été employé pour étudier l'impact des activités ménagères et agricoles sur la qualité des eaux des lagunes de la rivière Nestos (Vassona, Eratino et Keramoti). Les taux totaux d'azote et de phosphore dégagés par chaque activité qui se déroule à la périphérie de ces lagunes ont été estimés sous forme de coefficients de décharge des eaux résiduaires comme décrit par LOICZ. Il en résulte que 51,5 tonnes d'azote et 10,6 tonnes de phosphore s'accumulent dans les eaux de ces lagunes chaque année. L'épandage agricole (41,1 pourcent), les activités ménagères (32,2 pourcent) et l'élevage (26,7 pourcent) contribuent le plus à apporter de l'azote. Les déchets provenant de l'élevage (60,6 pourcent) et les déchets urbains (29,7 pourcent) contribuent le plus à apporter du phosphore. L'épandage contribue dans une moindre mesure à apporter du phosphore (9,7 pourcent). Les quantités d'azote et de phosphore inorganiques dissoutes et atteignant les lagunes ont été comparées à celles observées dans l'eau des lagunes durant la période 1994-1996. Il semble que l'approche théorique sous-estime légèrement les taux d'azote et de phosphore inorganiques dissouts, quoique cette différence puisse être attribuée à l'apport d'éléments à travers l'ouverture maritime de chaque lagune Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=137363
Permalink
Permalink
Permalink
Permalink
Permalink
Permalink
Permalink
Permalink
Permalink
