المؤلفون: Wild, Thomas B., Khan, Zarrar, Clarke, Leon, Hejazi, Mohamad, Bereslawski, Julia Lacal, Suriano, Micaela, Roberts, Paula, Casado, José, Miralles-Wilhelm, Fernando, Gavino-Novillo, Marcelo, Muñoz-Castillo, Raul, Moreda, Fekadu, Zhao, Mengqi, Yarlagadda, Brinda, Lamontagne, Jonathan, Birnbaum, Abigail

المصدر: Regional Environmental Change; Sep2021, Vol. 21 Issue 3, p1-16, 16p

مصطلحات موضوعية: AGRICULTURAL development, WATER shortages, WATER supply, INVESTMENT policy, SCHEDULING

مصطلحات جغرافية: ARGENTINA

مستخلص: Integrated energy-water-land (EWL) planning promotes synergies and avoids conflicts in ways that sector-specific planning approaches cannot. Many important decisions that influence emerging EWL nexus issues are implemented at regional (e.g., large river basin, electricity grid) and sub-regional (e.g., small river basin, irrigation district) scales. However, actual implementation of integrated planning at these scales has been limited. Simply collecting and visualizing data and interconnections across multiple sectors and sub-regions in a single modeling platform is a unique endeavor in many regions. This study introduces and applies a novel approach to linking together multiple sub-regions in a single platform to characterize and visualize EWL resource use, EWL system linkages within and among sub-regions, and the EWL nexus implications of future policies and investments. This integrated planning methodology is applied in the water-stressed Colorado River Basin in Argentina, which is facing increasing demands for agricultural and fossil fuel commodities. Guided by stakeholders, this study seeks to inform basin planning activities by characterizing and visualizing (1) the basin's current state of EWL resources, (2) the linkages between sectors within and among basin sub-regions, and (3) the EWL nexus implications of planned future agricultural development activities. Results show that water scarcity, driven in part by human demands that have historically reached 60% of total surface water supply, poses a substantial constraint to economic development in the basin. The Colorado basin has the potential to serve as a testbed for crafting novel and generalizable sub-regional EWL planning approaches capable of informing the EWL planning dialogue globally. [ABSTRACT FROM AUTHOR]

: Copyright of Regional Environmental Change is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Roncoli, Carla, Orlove, Ben, Ungemach, Christoph, Dowd-Uribe, Brian, West, Colin Thor, Milch, Kerry, Sanon, Moussa

المصدر: Regional Environmental Change; Feb2019, Vol. 19 Issue 2, p573-585, 13p

مصطلحات موضوعية: WATER supply, FARMERS, IRRIGATION, WATER shortages, WATER conservation

مستخلص: This article engages the concept of water literacy, coupled with photo-elicitation methods and long-term ethnographic research, to explore how West African farmers judge water sufficiency. The study focuses on the Upper Comoé river basin in southwest Burkina Faso, an area known for conflict among multiple water users. Pictures of familiar river sites were shown to farmers to explore how they determine whether water suffice to meet their irrigation and livelihood needs. The likelihood of finding water to be sufficient was influenced by who the respondents were (gender) and by where (downstream/upstream) and when (early/late dry season) the picture was taken. Farmers' sufficiency judgments were framed as a cognitive and linguistic dichotomy that posits water as being either enough or not enough. They drew upon a diversity of indicators in the natural and built environment and hinged on salient attributes, such as the "face" and the "flow" of the water. These two attributes enabled farmers to determine the water's "force," a foundational cultural notion that blends material and spiritual considerations. Farmers' assessments engage multiple time horizons, from memories of the past, to current observations and anticipated future scenarios. By relying upon shared memories and meanings, farmers can compare judgments, analyze options, and collectively mobilize to counteract the dominance of techno-scientific knowledge in official water allocation decisions. [ABSTRACT FROM AUTHOR]

: Copyright of Regional Environmental Change is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Li, Maotian, Finlayson, Brian, Webber, Michael, Barnett, Jon, Webber, Sophie, Rogers, Sarah, Chen, Zhongyuan, Wei, Taoyuan, Chen, Jing, Wu, Xiaodan, Wang, Mark

المصدر: Regional Environmental Change; Apr2017, Vol. 17 Issue 4, p1153-1161, 9p

مصطلحات موضوعية: WATER shortages, MUNICIPAL water supply, POPULATION & economics, WATER supply, RESERVOIRS, ECONOMICS

مستخلص: Many of the world's major cities are expected to face significant water shortages in coming decades, largely due to increased demand arising from economic and population growth. In this paper, we estimate the effects of economic and population growth on future public water needs in Shanghai, one of the world's megacities. Despite significant investment in a new reservoir and associated supply systems, and its location at the estuary of one the world's major rivers (the Yangtze), it is widely believed that Shanghai is vulnerable to water shortages, though the causes of this have hitherto not been systematically examined. Our method of estimating future water needs involves extrapolation from past trends and principal component analysis regression, and from the experience of comparable cities around the world, to construct three scenarios of future GDP and population growth and associated water needs. Our analysis shows that under various scenarios, by 2050 the difference between demand and present supply capacity will range between 1.6 and 6 million m/day and that the critical constraint to meeting future demand is treatment capacity, which will need to increase by between 35 and 83% beyond present levels. We discuss four options for managing the estimated deficit between future water demand and supply in Shanghai. [ABSTRACT FROM AUTHOR]

: Copyright of Regional Environmental Change is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Ait-Mouheb, Nassim, Molle, Bruno, Patureau, Dominique, Harmand, Jérôme, Pollice, Alfieri, Rapaport, Alain, Romagny, Bruno, Sinfort, Carole, Sari, Tewfik, Talozi, Samer, Topcuoglu, Bulent, Yıldırım, Ertan, Bahri, Akiça, Thayer, Bechir Ben, Riahi, Khalifa, Benyahia, Boumediene, Cherki, Brahim, Bourrié, Guilhem, Renault, Pierre, Condom, Nicolas

المصدر: Regional Environmental Change; Mar2018, Vol. 18 Issue 3, p693-705, 13p

مصطلحات موضوعية: CLIMATE change, WATER demand management, WATER shortages, WATER reuse, AGRICULTURAL water supply

مصطلحات جغرافية: MEDITERRANEAN Region

مستخلص: Climate change and a growing population around the Mediterranean Rim are increasing the need for water and, consequently, the pressure on resources in terms of both quantity and quality. High-quality water should be primarily reserved to drinking water while reclaimed water is an alternative for other usages. A review of situations in Tunisia, Jordan, France, and Italy involving the use of reclaimed water highlights the disparity in national regulations governing this alternative water resource and in its management. On the first hand, the use of recycled water for irrigation can have an adverse impact on public health and the environment, depending on treatment and irrigation practices. On the other hand, it may also represent a new source of water: wastewater should no longer be considered as waste but, rather, as a new resource to be handled in a circular economy-type loop. Current scientific knowledge in agronomic and environmental sciences, as well as in the economic and social sciences, can be integrated and used to lower the associated risk through the effective management of irrigation using recycled water and to address the following questions: (i) How can the time-varying nutrient needs of crops be managed to operate safe environmental reuse within an adapted risk assessment framework? (ii) What socio-economic models can render this integrated approach sustainable? (iii) What treatment systems and irrigation technology can be used to support these ideas and with what information? (iv) What changes in the regulations are needed? [ABSTRACT FROM AUTHOR]

: Copyright of Regional Environmental Change is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Graveline, Nina, Majone, Bruno, Duinen, Rianne, Ansink, Erik

المصدر: Regional Environmental Change; Feb2014, Vol. 14 Issue 1, p119-132, 14p

مصطلحات موضوعية: IRRIGATION farming, HYDROLOGICAL research, CLIMATE change, WATER shortages, WATER supply, ECONOMICS

مصطلحات جغرافية: SPAIN

مستخلص: Integrated approaches are needed to assess the effects of global changes on the future state of water resources at regional scales. We develop a hydro-economic model of the Gállego catchment, Spain, to assess how global change and policy options affect the catchment's water scarcity and the economic implications to the agricultural sector. The model couples physical processes (hydrology) and regulatory and economic processes (agricultural water demand, reservoir operation). Five scenarios, covering currently ongoing changes in climatic conditions, agriculture and hydrological planning, are evaluated. Our results suggest that the scenarios' impacts on water resources and regional agricultural income are significant. Policy responses such as investments in modernization of irrigation technology would mitigate the negative impacts of climatic change on the agricultural sector, but the implementation costs outweigh the extra regional agricultural income. Also, a planned reservoir extension project appears ineffective, even considering effects of climatic change. Although our results are site-specific, our methodology is relevant to other areas that face comparable problems of water scarcity. [ABSTRACT FROM AUTHOR]

: Copyright of Regional Environmental Change is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Carr, Edward R., Kettle, Nathan P.

المصدر: Regional Environmental Change; Jun2009, Vol. 9 Issue 2, p131-136, 6p, 1 Diagram

مصطلحات موضوعية: DROUGHTS, WATER shortages, RAINFALL, WATER supply, CLIMATE change, TEMPERATURE, METEOROLOGICAL precipitation, CLIMATOLOGY, WEATHER

مستخلص: This paper is a response to a recent special issue of Regional Environmental Change, “Quantifying vulnerability to drought from different disciplinary perspectives” (vol. 8, number 4, 2008). In this paper, we examine some of the challenges facing efforts to understand vulnerability to drought through quantification as they are manifest in some of the articles in this special issue. [ABSTRACT FROM AUTHOR]

: Copyright of Regional Environmental Change is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)