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  • France

Nadine Turpin

IRSTEA, Territoires, Department Member
We consider a model of regulation for nonpoint source water pollution through non-linear taxation/subsidization of agricultural production. Farmers are heterogenous along two dimensions, their ability to transform inputs into final... more
We consider a model of regulation for nonpoint source water pollution through non-linear taxation/subsidization of agricultural production. Farmers are heterogenous along two dimensions, their ability to transform inputs into final production and the available area they possess. Asymmetric information and participation of farmers to the regulation scheme put constraints on the optimal policy that we characterize. We show that a positive relationship between size of land and ability may exacerbate adverse selection effects. We calibrate the model using data on a French watershed and we simulate the optimal second-best policy and characterize the allocation of the abatement effort among the producers.
The impact of implementing different best management practices (BMPs) at the small watershed scale were examined for the Petzenkirchen catchment in Austria and Lake Vico in Italy, in terms of data needs, hydrological processes, tools and... more
The impact of implementing different best management practices (BMPs) at the small watershed scale were examined for the Petzenkirchen catchment in Austria and Lake Vico in Italy, in terms of data needs, hydrological processes, tools and models involved. Identification of critical source areas for targeting soil and phosphorus losses turned out to be crucial for correct allocation of BMPs. Comparison of environmental effectiveness and costs, both calculated using various modelling approaches, enabled us to compare different levels of introducing BMPs ecologically and economically. Within each catchment, small areas of land tended to be the source of disproportionately large amounts of pollution. Therefore, confining mitigation to these areas costs less than targeting wider areas. This suggests that a policy for environmental programmes should be focussed on hydrological units and critical source areas within these units instead of introducing universal controls – the ‘watering can’ principle – as practised today.
We built a model of regulation for non-point source water pollution through non-linear taxation/subsidisation of agricultural production. Farms are heterogeneous along two dimensions: their ability to transform inputs into final... more
We built a model of regulation for non-point source water pollution through non-linear taxation/subsidisation of agricultural production. Farms are heterogeneous along two dimensions: their ability to transform inputs into final production, and the available area ...
Research Interests:
L’objectif de ce papier est de proposer des procédures d’élaboration et de mise en œuvre des programmes agri-environnementaux pour assurer leur efficacité environnementale et sociale, lorsque les processus biophysiques en jeu sont... more
L’objectif de ce papier est de proposer des procédures d’élaboration et de mise en œuvre des programmes agri-environnementaux pour assurer leur efficacité environnementale et sociale, lorsque les processus biophysiques en jeu sont caractérisés par des effets de seuils. La régulation publique est confrontée à deux problèmes bien distincts : d’une part, les asymétries d’information relevant classiquement de la théorie des
Bouayad-Agha S., Turpin N. and Védrine L. Fostering the development of European regions: a spatial dynamic panel data analysis of the impact of cohesion policy, Regional Studies. This paper uses a conditional–convergence econometric model... more
Bouayad-Agha S., Turpin N. and Védrine L. Fostering the development of European regions: a spatial dynamic panel data analysis of the impact of cohesion policy, Regional Studies. This paper uses a conditional–convergence econometric model to investigate whether cohesion policy affects European economies. Its main contribution is to consider both spatial and temporal dynamics in assessing the impact of European cohesion policy. Econometric estimations rely on a dataset of 143 EU-14-NUTS-1/NUTS-2 regions from 1980 to 2005. The results suggest that Objective 1 programmes have a direct effect on regional gross domestic product per capita growth rates, whereas total Structural Funds do not. Moreover, consideration of the spatial dimension of the panel brings to light a still significant, but less important, impact of Structural Funds.Bouayad-Agha S., Turpin N. and Vedrine L. 促进欧洲区域的发展:通过空间动态面板数据对于整合政策影响进行的分析, 区域研究。本文利用条件收敛的计量经济模型考察了欧洲整合政策对欧洲经济产生的影响。本研究的主要贡献在于考察了空间及时间动态分析在评价欧洲整合政策中的作用。经济模型预估数据是基于 1980 年至 2005 年的143 EU-14-NUTS-1/NUTS-2 数据库。研究结果表明,目标一程序对区域人均国内生产总值增率产生直接影响,而未对总结构基金产生影响。面板的空间层面对结构基金产生的影响相对较弱。Bouayad-Agha S., Turpin N. et Védrine L. Promouvoir le développement des régions européennes: une analyse dynamique spatiale en données de panel de l'impact de la politique en faveur de la cohésion, Regional Studies. Cet article emploie un modèle économétrique de convergence conditionnelle pour examiner si, oui ou non, la politique en faveur de la cohésion influe sur les économies européennes. On examine principalement les dynamiques à la fois spatiales et temporelles en évaluant l'impact de la politique européenne en faveur de la cohésion. Les estimations économétriques puisent dans une banque de données auprès de 143 régions NUTS-1/NUTS-2 de l'Union européenne de 1980 à 2005. Les résultats laissent supposer que les actions en faveur de l'Objectif 1 ont un effet immédiat sur les taux de croissance du produit intérieur brut régional par tête, à la différence des fonds structurels globaux. Qui plus est, examiner l'aspect spatial des données de panel laisse voir un impact des fonds structurels qui s'avère encore significatif bien que moins important.Bouayad-Agha S., Turpin N. und Védrine L. Förderung der Entwicklung der europäischen Regionen: eine räumliche, dynamische Paneldaten-Analyse der Auswirkung der Kohäsionspolitik, Regional Studies. In diesem Beitrag wird mit Hilfe eines ökonometrischen konditionalen Konvergenzmodells untersucht, ob sich die Kohäsionspolitik auf die europäischen Ökonomien auswirkt. Der wichtigste Beitrag liegt hierbei in einer gleichzeitigen Berücksichtigung der räumlichen und zeitlichen Dynamik zur Bewertung der Auswirkung der europäischen Kohäsionspolitik. Die ökonometrischen Schätzungen basieren auf einem Datensatz der 143 EU-14-NUTS-1/NUTS-2-Regionen im Zeitraum von 1980 bis 2005. Aus den Ergebnissen geht hervor, dass sich die Ziel-1-Programme unmittelbar auf das Wachstum des regionalen Pro-Kopf-Bruttoinlandsprodukts auswirken, nicht jedoch die gesamten Strukturfonds. Darüber hinaus ergibt sich bei Berücksichtigung der räumlichen Dimension des Panels eine nach wie vor signifikante, aber weniger wichtige Auswirkung der Strukturfonds.Bouayad-Agha S., Turpin N. y Védrine L. Fomentar el desarrollo de las regiones europeas: análisis dinámico espacial de datos de panel del impacto de la política de cohesión, Regional Studies. En este artículo utilizamos un modelo econométrico de convergencia condicional para analizar si la política de cohesión afecta a las economías europeas. Su principal contribución es considerar tanto las dinámicas espaciales como temporales a la hora de evaluar el impacto de la política de cohesión europea. Las estimaciones econométricas se basan en un grupo de datos de 143 regiones EU-14-NUTS-1/NUTS-2 de 1980 a 2005. Los resultados indican que los programas del Objetivo 1 tienen un efecto directo en las tasas de crecimiento del producto interno bruto per cápita regional mientras que este efecto no ocurre en los fondos estructurales. Además, al considerar la dimensión espacial del panel observamos un impacto todavía significativo pero menos importante de los fondos estructurales.
... or underrepresented, which implies that trade-offs (antagonisms or synergies) between goals are identified and (iv) support achieving the main goal of the end-user, ie to create a moresustainable new policy (Alkan ... It was concluded... more
... or underrepresented, which implies that trade-offs (antagonisms or synergies) between goals are identified and (iv) support achieving the main goal of the end-user, ie to create a moresustainable new policy (Alkan ... It was concluded that applying the DPSIR framework could ...
Multifunctionality is one way to reconcile agriculture with sustainable development: agriculture, beyond the production of food and fibre, also provides important social, environmental and economic functions to society. In general, much... more
Multifunctionality is one way to reconcile agriculture with sustainable development: agriculture, beyond the production of food and fibre, also provides important social, environmental and economic functions to society. In general, much of the current literature on agricultural multifunctionality is qualitative and narrative, and focuses on demonstrating the existence of social and/or environmental functions. In this chapter, we start with the existence of these multiple functions and we seek to measure the relationships between them through the design of indicators of multifunctionality. We present a structured sequential framework to guide the development of multifunctionality indicators based on the concept of joint production. The three stages articulated in this framework are: Identification of jointness. Qualitative assessment of jointness. Quantitative assessment of jointness. Using data from empirical evidence suggests that multifunctionality in agriculture is far from being negligible.
Research Interests:
Research Interests: