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Dr. Yolanda Martínez
Agrifood Institute of Aragon (IA2)-(University of Zaragoza-CITA)

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0 agricultural non-point pollution
0 Agricultural and Natural Resource Economics
0 water allocation
0 Bioeconomics
0 ecosystems services

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water allocation
agricultural non-point pollution

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Journal article
Published: 30 October 2020 in Sustainability
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Spatial externalities, such as the sharing of harvesting equipment by many farmers, have an impact on the control of invasive species in the agricultural environment. In these cases, the regulator must design a set of measures to promote coordinated control by affected parties. We aim to analyze the determinants of private versus collective control efforts in the case of a particular invasive species (teosinte) occurring as a weed in corn fields throughout North-Eastern Spain. Using a simple discrete space-dynamic framework, we model the effect of the decisions made by the farmer of an infested plot on a noninfested plot, with the harvester being the only potential pathway for the invader to spread and assuming a one-way invasion. The results reveal that failure to adopt optimal cooperative strategies causes losses to other plots if they become infested amounting to an annual average of EUR 322/ha, when the infestation is low, and EUR 364/ha, when it is high. Results suggest that cleaning the harvester, a measure currently recommended by the regulatory agency in low-infestation cases but that does not guarantee that the machine is completely clean, is not socially optimal if monocropping practices are permitted in the region.

ACS Style

Gabriel Pardo; Miguel Gómez; Alicia Cirujeda; Yolanda Martínez. Economic Costs of Sharing the Harvester in the Control of an Invasive Weed. Sustainability 2020, 12, 9046 .

AMA Style

Gabriel Pardo, Miguel Gómez, Alicia Cirujeda, Yolanda Martínez. Economic Costs of Sharing the Harvester in the Control of an Invasive Weed. Sustainability. 2020; 12 (21):9046.

Chicago/Turabian Style

Gabriel Pardo; Miguel Gómez; Alicia Cirujeda; Yolanda Martínez. 2020. "Economic Costs of Sharing the Harvester in the Control of an Invasive Weed." Sustainability 12, no. 21: 9046.

Journal article
Published: 16 June 2020 in Ecological Indicators
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Nitrogen pollution is one of the main problems affecting the environment and human activity. This is especially true in semiarid regions where the quantity-quality relationship is a key constraining factor. In this paper, we propose and apply a method to quantify the economic value of the environmental service a river provides as a nitrate purifier/diluent. The main aim is to provide water management decisions with a solid and easily replicable method. Specifically, this study proposes a method to assess two processes of the water quality regulation service, namely, nitrate removal and dilution, through avoided decontamination costs. The proposed method is applied in the Ebro river basin as a role model. This application allows us to define the concepts in an operational manner. Since water availability forecasts are a key factor, we explore and analyze our results in accordance with several climate-change scenarios. The results show that the economic value of the removal service at the watershed scale amounts to about €92.3 million per year. Estimates of the annual economic value of the dilution service in the whole basin range more largely from €21.8 to €111.7 million, depending on the climate change scenario considered. To our knowledge, this is the first time that the dilution and removal services provided by rivers are jointly assessed.

ACS Style

Javier Tapia; Jorge Bielsa; Yolanda Martínez; Sabine Sauvage; Roxelane Cakir; Mélanie Raimonet; Magali Gerino; José Miguel Sánchez-Pérez. Economic valuation of the natural service of nitrate regulation provided by rivers including dilution effects: Application to a semiarid region, the Ebro basin (Spain). Ecological Indicators 2020, 117, 106608 .

AMA Style

Javier Tapia, Jorge Bielsa, Yolanda Martínez, Sabine Sauvage, Roxelane Cakir, Mélanie Raimonet, Magali Gerino, José Miguel Sánchez-Pérez. Economic valuation of the natural service of nitrate regulation provided by rivers including dilution effects: Application to a semiarid region, the Ebro basin (Spain). Ecological Indicators. 2020; 117 ():106608.

Chicago/Turabian Style

Javier Tapia; Jorge Bielsa; Yolanda Martínez; Sabine Sauvage; Roxelane Cakir; Mélanie Raimonet; Magali Gerino; José Miguel Sánchez-Pérez. 2020. "Economic valuation of the natural service of nitrate regulation provided by rivers including dilution effects: Application to a semiarid region, the Ebro basin (Spain)." Ecological Indicators 117, no. : 106608.

Journal article
Published: 01 May 2019 in Informacion Tecnica Economica Agraria
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ACS Style

Y. Martínez; A. Palacio-Bielsa. Estimación del impacto económico de Xylella fastidiosa en Aragón. Informacion Tecnica Economica Agraria 2019, 1 .

AMA Style

Y. Martínez, A. Palacio-Bielsa. Estimación del impacto económico de Xylella fastidiosa en Aragón. Informacion Tecnica Economica Agraria. 2019; ():1.

Chicago/Turabian Style

Y. Martínez; A. Palacio-Bielsa. 2019. "Estimación del impacto económico de Xylella fastidiosa en Aragón." Informacion Tecnica Economica Agraria , no. : 1.

Journal article
Published: 16 January 2019 in Agronomy
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Black polyethylene (PE) is the most common mulching material used in horticultural crops in the world but its use represents a very serious environmental problem. Biodegradable films and paper mulches are available alternatives but farmers are reluctant to adopt them because of their high market prices. The aim of this paper is to evaluate the economic profitability of eight biodegradable mulching materials available for open-air pepper production. The economic evaluation is based on a four-year trial located in a semi-arid region of Spain. Three scenarios of PE waste management are examined: (i) absence of residues management, (ii) landfill accumulation, and (iii) total recycling. The inclusion of the costs of waste management and recycling under the current Spanish legislation only reduced the final net margin by 0.2%. The results show that an increase in subsidy rates of up to 50.1% on the market price would allow all biodegradable films to be economic alternatives to PE. The study supports the mandatory measures for the farmers to assume the costs of waste management and recycling. Despite savings in field conditioning costs, high market prices of biodegradable materials and papers are not compensated by the current level of subsidies, hampering their adoption in the fields.

ACS Style

Ana I. Marí; Gabriel Pardo; Alicia Cirujeda; Yolanda Martínez. Economic Evaluation of Biodegradable Plastic Films and Paper Mulches Used in Open-Air Grown Pepper (Capsicum annum L.) Crop. Agronomy 2019, 9, 36 .

AMA Style

Ana I. Marí, Gabriel Pardo, Alicia Cirujeda, Yolanda Martínez. Economic Evaluation of Biodegradable Plastic Films and Paper Mulches Used in Open-Air Grown Pepper (Capsicum annum L.) Crop. Agronomy. 2019; 9 (1):36.

Chicago/Turabian Style

Ana I. Marí; Gabriel Pardo; Alicia Cirujeda; Yolanda Martínez. 2019. "Economic Evaluation of Biodegradable Plastic Films and Paper Mulches Used in Open-Air Grown Pepper (Capsicum annum L.) Crop." Agronomy 9, no. 1: 36.

Article
Published: 01 January 2019 in Planta Daninha
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Weed control is a crucial aspect in many conservation agriculture systems given that costs and time savings from avoiding tillage are closely linked to the use of effective and environmental friendly herbicides. This has led to the widespread use of glyphosate in farms, as it is a broad-spectrum, easily degradable, low- cost herbicide. The recent debate on the safety of glyphosate and on the excessive use of chemical herbicides in food production has caused concern on farmers about the possible economic effects of a virtual ban on glyphosate. The aim of this paper is to estimate the costs associated with an eventual prohibition of glyphosate in Spanish conservation agriculture areas. The costs of different alternative weed control strategies for herbaceous and tree crops were calculated: i) substitution of glyphosate in chemical control; ii) minimum tillage; iii) conventional tillage; and iv) natural or planted vegetal groundcovers. The results show that banning glyphosate would increase the costs of chemical control by 40% for herbaceous and by 57% for tree crops. However, conventional tillage would be a cheaper option for herbaceous because costs increase by 10% compared to current techniques. Our estimations suggest that the ban on glyphosate would have a negative impact on the economic profitability of farms and also on other non-economic advantages derived from conservation farming techniques.

ACS Style

G. Pardo; Y. Martínez. Conservation Agriculture in Trouble? Estimating the Economic Impact of an Eventual Glyphosate Prohibition in Spain. Planta Daninha 2019, 37, 1 .

AMA Style

G. Pardo, Y. Martínez. Conservation Agriculture in Trouble? Estimating the Economic Impact of an Eventual Glyphosate Prohibition in Spain. Planta Daninha. 2019; 37 ():1.

Chicago/Turabian Style

G. Pardo; Y. Martínez. 2019. "Conservation Agriculture in Trouble? Estimating the Economic Impact of an Eventual Glyphosate Prohibition in Spain." Planta Daninha 37, no. : 1.

Journal article
Published: 01 September 2018 in Agricultural Systems
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ACS Style

Yolanda Martínez; Alicia Cirujeda; Miguel I. Gómez; Ana I. Marí; Gabriel Pardo. Bioeconomic model for optimal control of the invasive weed Zea mays subspp. (teosinte) in Spain. Agricultural Systems 2018, 165, 116 -127.

AMA Style

Yolanda Martínez, Alicia Cirujeda, Miguel I. Gómez, Ana I. Marí, Gabriel Pardo. Bioeconomic model for optimal control of the invasive weed Zea mays subspp. (teosinte) in Spain. Agricultural Systems. 2018; 165 ():116-127.

Chicago/Turabian Style

Yolanda Martínez; Alicia Cirujeda; Miguel I. Gómez; Ana I. Marí; Gabriel Pardo. 2018. "Bioeconomic model for optimal control of the invasive weed Zea mays subspp. (teosinte) in Spain." Agricultural Systems 165, no. : 116-127.

Journal article
Published: 01 December 2017 in Science of The Total Environment
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Water scarcity is one of the major environmental problems in Southern Europe. High levels of water stress and increasing frequency of droughts, along with a greater environmental protection, make it necessary to design water management strategies that are allocative efficient and balance supply and demand. When functioning markets cannot be developed, the allocation rules proposed in the literature of social choice have been recognized as a suitable alternative. However, the application of new water allocation rules can be impaired by a lack of acceptance and implementation problems. This paper examines these obstacles for the case of an agricultural water users association (WUA), situated in the basin of the River Ebro, in relation to the governance structure and collective decision rule of the WUA. It analyzes the extent to which the gains and losses of the farmers affect their acceptance, and examines conditions for building agreements with side payments that provide incentives for the majority of the farmers to form part of a possible agreement. The results show that the uniform and sequential rules improve the allocative efficiency under normal conditions compared to the status quo and the sequential rule even in the case of droughts. In the presence of side payments this rule is likely to be accepted and has only an insignificant impact on distributional inequality.

ACS Style

Renan Goetz; Yolanda Martínez; Àngels Xabadia. Efficiency and acceptance of new water allocation rules - The case of an agricultural water users association. Science of The Total Environment 2017, 601-602, 614 -625.

AMA Style

Renan Goetz, Yolanda Martínez, Àngels Xabadia. Efficiency and acceptance of new water allocation rules - The case of an agricultural water users association. Science of The Total Environment. 2017; 601-602 ():614-625.

Chicago/Turabian Style

Renan Goetz; Yolanda Martínez; Àngels Xabadia. 2017. "Efficiency and acceptance of new water allocation rules - The case of an agricultural water users association." Science of The Total Environment 601-602, no. : 614-625.

Journal article
Published: 01 December 2016 in Economía Agraria y Recursos Naturales
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ACS Style

Yolanda Martínez Martínez; Gabriel Pardo. Tree crops in Aragon: economic evaluation of an eventual prohibition of glyphosate. Economía Agraria y Recursos Naturales 2016, 16, 143 -150.

AMA Style

Yolanda Martínez Martínez, Gabriel Pardo. Tree crops in Aragon: economic evaluation of an eventual prohibition of glyphosate. Economía Agraria y Recursos Naturales. 2016; 16 (2):143-150.

Chicago/Turabian Style

Yolanda Martínez Martínez; Gabriel Pardo. 2016. "Tree crops in Aragon: economic evaluation of an eventual prohibition of glyphosate." Economía Agraria y Recursos Naturales 16, no. 2: 143-150.

Research article
Published: 01 June 2014 in Outlook on Agriculture
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The economic importance of organic production systems is growing year on year. Producers who wish to convert their farms to organic farming face significant transition costs due to changes in management, work organization and lifestyle. The aim of this study was to compare the yield and economic outputs of a conventional and an organic farming system in south-west Spain, a region characterized by a subhumid climate. The organic rotation of wheat–sunflower–peas–faba bean (green manure) was compared with a conventional rotation of wheat–sunflower over four cropping seasons. Economic analysis showed that organic farming was 62% more profitable, assuming current organic premium prices, and 36% more profitable when selling products in conventional markets. However, without the Common Agricultural Policy and regional payments and with conventional prices, the profitability of organics falls below that of conventional production.

ACS Style

Gabriel Pardo; Francisco Perea; Yolanda Martínez; José María Urbanoa. Economic Profitability Analysis of Rainfed Organic Farming in SW Spain. Outlook on Agriculture 2014, 43, 115 -122.

AMA Style

Gabriel Pardo, Francisco Perea, Yolanda Martínez, José María Urbanoa. Economic Profitability Analysis of Rainfed Organic Farming in SW Spain. Outlook on Agriculture. 2014; 43 (2):115-122.

Chicago/Turabian Style

Gabriel Pardo; Francisco Perea; Yolanda Martínez; José María Urbanoa. 2014. "Economic Profitability Analysis of Rainfed Organic Farming in SW Spain." Outlook on Agriculture 43, no. 2: 115-122.

Journal article
Published: 01 January 2014 in Ciencia e investigación agraria
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ACS Style

Yolanda Martínez Martínez; Encarna Esteban. Social choice and groundwater management: application of the uniform rule. Ciencia e investigación agraria 2014, 41, 3 -4.

AMA Style

Yolanda Martínez Martínez, Encarna Esteban. Social choice and groundwater management: application of the uniform rule. Ciencia e investigación agraria. 2014; 41 (2):3-4.

Chicago/Turabian Style

Yolanda Martínez Martínez; Encarna Esteban. 2014. "Social choice and groundwater management: application of the uniform rule." Ciencia e investigación agraria 41, no. 2: 3-4.

Journal article
Published: 20 October 2012 in Environmental Economics and Policy Studies
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As an alternative to the existing environmental policy instruments, recent literature proposes to combine different policy instruments (two-part instruments) which have most of the properties of a first-best Pigouvian tax while minimizing the need for monitoring and enforcement. This article explores the design and applicability of a policy based on two-part instruments to control nonpoint source pollution. Applying this approach, however, leads to a moral hazard problem, since it is not only the input itself that is responsible for the pollution but also the way it is applied. The analysis determines the optimal combinations of taxes and subsidies as a function of the ability to observe the output and the applied inputs. In an empirical illustration we determine the magnitude of the taxes and subsidies to establish the socially optimal level of nitrate emissions from livestock manure for a region in northeast Spain.

ACS Style

Renan-Ulrich Goetz; Yolanda Martínez. Nonpoint source pollution and two-part instruments. Environmental Economics and Policy Studies 2012, 15, 237 -258.

AMA Style

Renan-Ulrich Goetz, Yolanda Martínez. Nonpoint source pollution and two-part instruments. Environmental Economics and Policy Studies. 2012; 15 (3):237-258.

Chicago/Turabian Style

Renan-Ulrich Goetz; Yolanda Martínez. 2012. "Nonpoint source pollution and two-part instruments." Environmental Economics and Policy Studies 15, no. 3: 237-258.

Journal article
Published: 01 December 2011 in Spanish Journal of Agricultural Research
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The implementation of policies to control nonpoint pollution is a complicated task because the lack of information about the biophysical processes and the asymmetric information between social planner and polluters. The objective of this paper is to evaluate the efficiency of using an input tax instrument (water tax) with a non-uniform tax rate to abate nonpoint pollution. This water tax instrument generates a reduction in the pollution level, and induces farmers to adopt abatement practices such as better irrigation technology systems. The model presents theoretically and empirically the salinity pollution problems in the Ebro Basin (Northeast of Spain). Farmers are heterogeneous in crop types, irrigation technologies, and biophysical field characteristics. Because of this heterogeneity each farmer generates a different level of emissions, so farmers should be taxed differently. In this analysis, the social planner implements two tax rates according with farmers’ irrigation technology. Using a non-uniform tax rate, pollution emissions are reduced and farmers are induced to change their irrigation technology towards a more efficient one. The use of a more efficient irrigation technology increases social welfare and generates a cutback in the emission loads.

ACS Style

E. Esteban; J. Tapia; Yolanda Martínez Martínez; J. Albiac. Pigouvian taxation to induce technological change and abate nonpoint pollution in the Ebro Basin, Spain. Spanish Journal of Agricultural Research 2011, 9, 957 .

AMA Style

E. Esteban, J. Tapia, Yolanda Martínez Martínez, J. Albiac. Pigouvian taxation to induce technological change and abate nonpoint pollution in the Ebro Basin, Spain. Spanish Journal of Agricultural Research. 2011; 9 (4):957.

Chicago/Turabian Style

E. Esteban; J. Tapia; Yolanda Martínez Martínez; J. Albiac. 2011. "Pigouvian taxation to induce technological change and abate nonpoint pollution in the Ebro Basin, Spain." Spanish Journal of Agricultural Research 9, no. 4: 957.

Journal article
Published: 23 October 2011 in Economía Agraria y Recursos Naturales
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This paper analyzes the effects of some water management policies and irrigation systems on crop yields and water pollution, in an area located in the Flumen- Monegros irrigation district in Huesca (Spain). The analysis is performed using water and nitrogen crop response functions, which are estimated with the EPIC crop growth package. The estimation of response for the crop activities incorporates information on local climate, soils, crop management and irrigation systems. The relationship between yields and water and nitrogen input use is examined, in order to quantify the pollution reduction cost faced by farmers. The costs depend on the particular crop and the pollution abatement measure, and information on these costs is important to design efficient pollution abatement measures.

ACS Style

Yolanda Martínez Martínez; Skender Uku Karaj; José Albiac Murillo. El control de la contaminación por nitratos en el regadío. Economía Agraria y Recursos Naturales 2011, 2, 115 .

AMA Style

Yolanda Martínez Martínez, Skender Uku Karaj, José Albiac Murillo. El control de la contaminación por nitratos en el regadío. Economía Agraria y Recursos Naturales. 2011; 2 (2):115.

Chicago/Turabian Style

Yolanda Martínez Martínez; Skender Uku Karaj; José Albiac Murillo. 2011. "El control de la contaminación por nitratos en el regadío." Economía Agraria y Recursos Naturales 2, no. 2: 115.

Journal article
Published: 19 October 2011 in Economía Agraria y Recursos Naturales
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In this paper, the introduction of three different methods for the assignment of water in agriculture is simulated in order to compare its economic efficiency for the case of an irrigated area located in the central Ebro Valley. Apart from the currently applied proportional system, water markets have been simulated along with the uniform rule, developed in social choice theory. The results show that although the water market achieves the best results in all cases, the uniform rule can be an interesting alternative to current management methods if water assignments are at regular levels, while in the case of severe water shortage; markets offer a clearer advantage with regard to any other method. The results also show that higher levels of heterogeneity between firms and high water prices situate the uniform rule in a more favorable situation then the currently applied proportional system.

ACS Style

Renan-Ulrich Goetz; Yolanda Martínez; Jofre Rodrigo. Eficiencia de las reglas de asignación de agua en el regadío: Asignación a través de mercados, de la regla proporcional y de la regla uniforme. Economía Agraria y Recursos Naturales 2011, 5, 115 -138.

AMA Style

Renan-Ulrich Goetz, Yolanda Martínez, Jofre Rodrigo. Eficiencia de las reglas de asignación de agua en el regadío: Asignación a través de mercados, de la regla proporcional y de la regla uniforme. Economía Agraria y Recursos Naturales. 2011; 5 (9):115-138.

Chicago/Turabian Style

Renan-Ulrich Goetz; Yolanda Martínez; Jofre Rodrigo. 2011. "Eficiencia de las reglas de asignación de agua en el regadío: Asignación a través de mercados, de la regla proporcional y de la regla uniforme." Economía Agraria y Recursos Naturales 5, no. 9: 115-138.

Journal article
Published: 01 April 2008 in Ecological Economics
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This paper considers the problem of allocating shares of irrigation water to different agricultural agents with single-peaked preferences with respect to their own shares. We define two different sequential allocation rules that respect the asymmetry between the agents and maintain the properties of Pareto efficiency and strategy-proofness, and we design a specific algorithm to apply these rules. The results of the empirical application of these rules for the case of an irrigated area located in the Ebro Basin (Spain) show that the designed sequential rules are able to substantially improve the efficiency of the currently applied proportional rule in context of severe scarcity of water and/or high administrative water prices.

ACS Style

Renan U. Goetz; Yolanda Martinez; Jofre Rodrigo. Water allocation by social choice rules: The case of sequential rules. Ecological Economics 2008, 65, 304 -314.

AMA Style

Renan U. Goetz, Yolanda Martinez, Jofre Rodrigo. Water allocation by social choice rules: The case of sequential rules. Ecological Economics. 2008; 65 (2):304-314.

Chicago/Turabian Style

Renan U. Goetz; Yolanda Martinez; Jofre Rodrigo. 2008. "Water allocation by social choice rules: The case of sequential rules." Ecological Economics 65, no. 2: 304-314.

Original articles
Published: 01 March 2007 in International Journal of Water Resources Development
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The traditional policy of developing new irrigated areas in Aragon has been changed to irrigation modernization through investments in distribution networks and on-farm irrigation equipment. This new policy creates opportunities to introduce more profitable crops, conserve irrigation water and abate agricultural nonpoint pollution. Several alternatives open to irrigated agriculture are bioethanol and biodiesel technologies (which could provide a support price for grains), the expansion of profitable fruits and vegetables under drip irrigation, and the diversification of water using activities (animal farming, industries, residential areas and sport utilities). Alternative measures to abate agricultural nonpoint pollution are examined in this paper. Modernizing irrigation structures leads to a large reduction of pollution, and introduces reasonable costs to farmers (in terms of their rent). Results also show that water pricing—advocated by the European Water Framework Directive—is a wrong policy in irrigation, because irrigation demand does not respond to prices and also because water pricing is not cost efficient to abate pollution.

ACS Style

José Albiac; Enrique Playán; Yolanda Martínez Martínez. Instruments for Water Quantity and Quality Management in the Agriculture of Aragon. International Journal of Water Resources Development 2007, 23, 147 -164.

AMA Style

José Albiac, Enrique Playán, Yolanda Martínez Martínez. Instruments for Water Quantity and Quality Management in the Agriculture of Aragon. International Journal of Water Resources Development. 2007; 23 (1):147-164.

Chicago/Turabian Style

José Albiac; Enrique Playán; Yolanda Martínez Martínez. 2007. "Instruments for Water Quantity and Quality Management in the Agriculture of Aragon." International Journal of Water Resources Development 23, no. 1: 147-164.

Journal article
Published: 01 January 2007 in International Journal of Agricultural Resources, Governance and Ecology
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Nonpoint pollution from agriculture is an emerging issue in the environmental policy of the European Union. Dynamic optimisation techniques are important in nonpoint pollution, and neglect of dynamic aspects may seriously mislead the proper design of policy measures. This paper presents an empirical assessment of nitrogen pollution abatement in the Ebro basin of northeastern Spain. The aim is to contribute to the ongoing policy discussion by ranking several emission control measures. Results indicate that nitrogen-based instruments are more cost efficient than water-based instruments. This finding questions the reliance of the Water Framework Directive on water pricing to improve water quality. The study also provides welfare, quasi-rent and pollution information for each crop and control measure. This information could be useful when discriminating abatement measures by crop type, in cases of valuable ecosystems and heavy nitrogen damage costs.

ACS Style

Yolanda Martínez Martínez; Elena Calvo; Jose Albiac. A dynamic analysis of nonpoint pollution control instruments in agriculture. International Journal of Agricultural Resources, Governance and Ecology 2007, 6, 60 .

AMA Style

Yolanda Martínez Martínez, Elena Calvo, Jose Albiac. A dynamic analysis of nonpoint pollution control instruments in agriculture. International Journal of Agricultural Resources, Governance and Ecology. 2007; 6 (1):60.

Chicago/Turabian Style

Yolanda Martínez Martínez; Elena Calvo; Jose Albiac. 2007. "A dynamic analysis of nonpoint pollution control instruments in agriculture." International Journal of Agricultural Resources, Governance and Ecology 6, no. 1: 60.

Journal article
Published: 31 October 2006 in Land Use Policy
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ACS Style

Yolanda Martínez Martínez; José Albiac. Nitrate pollution control under soil heterogeneity. Land Use Policy 2006, 23, 521 -532.

AMA Style

Yolanda Martínez Martínez, José Albiac. Nitrate pollution control under soil heterogeneity. Land Use Policy. 2006; 23 (4):521-532.

Chicago/Turabian Style

Yolanda Martínez Martínez; José Albiac. 2006. "Nitrate pollution control under soil heterogeneity." Land Use Policy 23, no. 4: 521-532.

Journal article
Published: 16 August 2006 in European Journal of Operational Research
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This paper develops a multi-criteria methodology to simulate irrigation water markets at basin level. For this purpose it is assumed that irrigators try to optimise personal multi-attribute utility functions via their productive decision making process (crop mix), subject to a set of constraints based upon the structural features of their farms. In this sense, farmers with homogeneous behaviour regarding water use have been grouped, such groups being established as “types” to be considered in the whole water market simulation model. This model calculates the market equilibrium through a solution that maximises aggregate welfare, which is quantified as the sum of the multi-attribute utilities reached by each of the participating agents. This methodology has been empirically applied for the Duero Basin (Northern Spain), finding that the implementation of this economic institution would increase economic efficiency and agricultural labour demand, particularly during droughts.

ACS Style

José A. Gómez-Limón; Yolanda Martínez. Multi-criteria modelling of irrigation water market at basin level: A Spanish case study. European Journal of Operational Research 2006, 173, 313 -336.

AMA Style

José A. Gómez-Limón, Yolanda Martínez. Multi-criteria modelling of irrigation water market at basin level: A Spanish case study. European Journal of Operational Research. 2006; 173 (1):313-336.

Chicago/Turabian Style

José A. Gómez-Limón; Yolanda Martínez. 2006. "Multi-criteria modelling of irrigation water market at basin level: A Spanish case study." European Journal of Operational Research 173, no. 1: 313-336.

Journal article
Published: 02 October 2004 in Water Resources Research
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[1] Nonpoint pollution from agriculture is an important environmental policy issue in Spain and the European Union. Agricultural pollution in Spain is being addressed by the National Irrigation Plan and by the European Water Framework Directive. This article contributes to the ongoing policy decision process by analyzing nonpoint pollution control and presenting results on the efficiency of abatement measures. Results question the reliance of the Water Framework Directive on water pricing as a pollution instrument for reaching good status for all waters because higher water prices close to full recovery cost advocated by the directive appear to be inefficient as an emission control instrument. Another important result is that abatement measures based on input taxes and standards on nitrogen appear to be more suitable than the National Irrigation Plan subsidies designed to promote irrigation investments. The results also contribute with further evidence to the discussion on the appropriate instrument base for pollution control, proving that nonpoint pollution control instruments cannot be assessed accurately without a correct understanding of the key underlying biophysical processes. Nonpoint pollution is characterized by nonlinearities, dynamics, and spatial dependency, and neglect of the dynamic aspects may lead to serious consequences for the design of measures. Finally, a quantitative assessment has been performed to explore discriminating measures based on crop pollution potential on vulnerable soils. No significant welfare gains are found from discriminating control, although results are contingent upon the level of damage, and discrimination could be justified in areas with valuable ecosystems and severe pollution damages.

ACS Style

Yolanda Martínez; José Albiac. Agricultural pollution control under Spanish and European environmental policies. Water Resources Research 2004, 40, 1 .

AMA Style

Yolanda Martínez, José Albiac. Agricultural pollution control under Spanish and European environmental policies. Water Resources Research. 2004; 40 (10):1.

Chicago/Turabian Style

Yolanda Martínez; José Albiac. 2004. "Agricultural pollution control under Spanish and European environmental policies." Water Resources Research 40, no. 10: 1.