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Implementation and Case Studies

Science Forum 2018 Case Study // Energy Checklist for Asia’s Irrigation Projects

By Hua Xie, Van Manh Nguyen, Claudia Ringler, Yasmin Siddiqi. This case study "Energy checklist for Asia’s irrigation projects: increasing crop water productivity without increasing energy use in agriculture" discusses the energy checklist developed for irrigation managers and tested on high-value crops in the Central Highlands of Vietnam.

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Asia accounts for more than two thirds of irrigated area in the world, much of it still gravity-fed; about 85 percent of all water withdrawn in the region is used for irrigated agriculture. Given growing pressures from industries and cities, and incipient demands for enhanced environmental flows, there is increasing pressure to modernize Asia’s irrigation systems to increase efficiency and to move water toward additional irrigation, but also increasingly urban-industrial uses. However, irrigation managers in charge of modernizing systems are seldom aware of the full range of energy linkages of existing and planned irrigation systems, and heavily energy-dependent modernization projects might fail to meet expectations if the many demands on energy sources, such as for pumping water and applying it to the field, for agricultural chemicals and machinery services, and for ensuring that outputs can be profitably brought to market cannot be fulfilled.

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Science Forum 2018 website (open access)

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Resource

Epistemological Dimensions of the Water–Energy–Food Nexus Approach // Reply to Discussions of “Challenges in Operationalizing the Water–Energy–Food Nexus”

By Christophe Cudennec et al. This article discusses recent literature and events on the water–energy–food (WEF) nexus, including the UN 2018 High Level Political Forum on sustainable development. Here, it elaborates on the epistemological perspective of the WEF nexus conceptualization, assessment, discourse and operationalization.

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Resource

Agua, Producción de Alimentos y Energía // La Experiencia del Nexo en Chile

Por Humberto Peña. El presente estudio analiza este Nexo en el caso de Chile. Con ese propósito, se revisa la evolución de las políticas públicas y los marcos institucionales relacionados con la gestión del agua, y el desarrollo del riego y de la energía eléctrica. En el análisis se distingue entre: un período inicial; otro donde el Estado fue el motor del desarrollo; un tercero con un predominio del mercado; y, finalmente, uno donde se busca un nuevo equilibrio entre el interés público y los...

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Biofuels

Efficiency Type Index // Analysis of the current World Biofuel Production under a Water–Food–Energy Nexus Perspective

By Emanuele Moioli, Federico Salvati, Marco Chiesa, Rosa T. Siecha, Flavio Manenti, Francesco Laio, Maria Cristina Rulli. This paper assesses the sustainability of bioenergy production under a nexus perspective through a new efficiency type index. The index describes 1st generation biofuel production under the perspective of the implied consumption of natural resources. The direct application of the nexus index entails an indication of the possible improvements needed to move production towards...

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