Modeling water scarcity and droughts for policy adaptation to climate change in arid and semiarid regions

Kahil, Taher; Dinar, Ariel; Albiac, José

doi:10.1016/j.jhydrol.2014.12.042

Cited by 184 publications

(118 citation statements)

References 29 publications

Supporting

Mentioning

112

Contrasting

Unclassified

Order By: Relevance

“…There have been extensive researches on water resources, including water protection, effective utilization of water resources (Huang et al, 2013) and evaluation of water security etc., particularly, the water-use efficiency has always been the core issue in different countries (Abu-Allaban et al, 2015;Kahil et al, 2015). At the early stage of the world development, water resource was regarded as "free commodity", while with the boom of global economy, the conflicts between water demand and supply have become fiercer, how to improve the water-use efficiency is becoming a very urgent task (Sun et al, 2014;Zhang and Wang, 2015).…”

Section: Introductionmentioning

confidence: 99%

An integrated analysis of agricultural water-use efficiency: A case study in the Heihe River Basin in Northwest China

Wang

Chen

et al. 2015

Physics and Chemistry of the Earth, Parts A/B/C

View full text Add to dashboard Cite

a b s t r a c tThe water-use efficiency has direct impacts on the water consumption of agriculture production and is vital to water conservation at both local and regional extent. The agricultural water-use efficiency is a critical indicator that reflects the effective water allocation and water productivity improvement among different agricultural sectors. Taking the Heihe River Basin as the case study area, this study explores the changing trajectories of agricultural water use based on the inputeoutput data of 2003e2012, and estimates the water-use efficiency with Data Envelopment Analysis, Malmquist Total Productivity Index and the decomposition of total factor productivity. Further, the influence of driving factors on the wateruse efficiency is analyzed with the Tobit model. The research results indicate that the average agricultural water-use efficiency in different counties is all lower than 1 during 2003e2012, indicating that there is still improvement space in the agricultural water-use efficiency. In addition, there is obvious heterogeneity in the agricultural water-use efficiency among different counties, especially prior to 2009. The research results from the Tobit model indicate that agricultural investment and production, economic growth, industrial restructuring and agricultural plants structural adjustment have significant influence on the agricultural water-use efficiency. The research results can provide significant references for agricultural water-use management in the middle reaches of the Heihe River Basin and other similar regions in Northwest China.

show abstract

Section: Introductionmentioning

confidence: 99%

An integrated analysis of agricultural water-use efficiency: A case study in the Heihe River Basin in Northwest China

Wang

Chen

et al. 2015

Physics and Chemistry of the Earth, Parts A/B/C

View full text Add to dashboard Cite

show abstract

“…Babel et al, 2005;Kahil et al, 2015) environmental aspects and only five papers included more than three .…”

Section: Review Of Hydro-economic Modelsmentioning

confidence: 99%

“…The study also concludes that the consideration of environmental impacts is patchy, and proposes the ES approach as a systematic way to classify and assess them. Mullick et al, 2013; Surface and groundwater for drinking and nondrinking purposes 1997;Cai et al, 2002;Assimacopoulos et al, 2005;Babel et al, 2005;Divakar et al, 2011;Davidson et al, 2013b;a;Divakar et al, 2013;Mullick et al, 2013;Debnath, 2014;Debnath et al, 2015;Kahil et al, 2015) Filtration/sequestration /storage/accumulatio n by micro-org., plants, animals & ecosystems Assimacopoulos et al, 2005) Dilution by freshwater ecosystems Divakar et al, 2011;Divakar et al, 2013) Flood protection ) Global climate regulation Experiential use of plants, animals and landscapes (tourism) Kahil et al, 2015) Class Papers…”

Section: Services Assessmentmentioning

confidence: 99%

“…For example, wetlands have the capacity to purify water by means of biochemical processes with capacity being a function of wetland condition and health. The degradation of wetland ecosystems could increase treatment costs of the water extracted for consumptive use (Maltby and Barker, 2009) and/or a reduce the recreation potential (Kahil et al, 2015) leading to loss of income for the tourism industry.…”

Section: Assessment Ofmentioning

confidence: 99%

“…An exception is Kahil et al (2015) who use a piecewise function to consider the shifts in the benefits provided by a wetland depending on inflow critical thresholds.…”

Section: Uncertainty In Es Values Can Be a Consequence Of The Valuatimentioning

confidence: 99%

See 2 more Smart Citations

Assessment of Ecosystem Services and Water Accounting Methodologies for Integrated Water Resources Management in water scarce basins.

Benavent¹

View full text Add to dashboard Cite

However, the existing methodologies are disconnected from the real requirements of water resources planning and management in complex river basins such as the ones suffering from water scarcity. The Water Accounting frameworks adopt a financial accounting perspective that is too exhaustive for the purpose of transmitting the relevant water stocks and flows for water managers and users in a river basin, and that entail less accuracy in the global water balance. Also, the analysed Ecosystem Assessment Tools overlook the influence of water management as well as the temporal and spatial variability of water resources and demands. This Thesis proposes methodologies for Water Accounting and EcosystemServices Assessment which overcome the identified limitations and are especially adapted to be implemented in water scarce river basins. The Australian Water Accounting Standards are simplified to avoid exhaustive accounting for the sake of accuracy and transparency of water management information. An improved version is fully designed, and some criteria are proposed to guide its implementation at river basin scale with the purpose of improving public information and governance. A set of Integrated Water Resources Management Tools embedded in the DecisionSupport System AQUATOOL is tailored with economic information in order to obtain the benefits of three Freshwater Ecosystem Services considering the influence of water management with a detailed time step.The application of the resulting methodologies to different cases of study show the relevance of adopting a water management perspective in order to capture all the complexity of water scarce river basins in the results, so that they are useful for informed decision making. The Water Accounting results disclose synthesised and relevant information for water users and Finally, the methodologies are put into context inside the Integrated Water Resources Management process that covers the target variables to consider, the tools that allow analysing the influence of management actions on them, the indicators that are more informative to water managers, and the ways to transmit the information to the general public.Furthermore, the types of analyses which can be conducted with the proposed methodologies are detailed, and illustrated with examples in scientific literature.The presented research is based on published work, which is expanded or detailed, and includes other non published material. The result is a Thesis that provides improved results and conclusions with respect to the stand-alone papers.v Resumen A pesar de que la planificación y gestión de los recursos hídricos ha evolucionado enormemente, existe todavía discordancia entre la misma y la Gestión Integrada de Recursos Hídricos. A la luz de la Directiva Europea Marco del Agua y otras Políticas Europeas relacionadas con el agua y la sostenibilidad, la Contabilidad del Agua y la evaluación de los Servicios de los Ecosistemas se han identificado como herramientas que pueden ayudar a aproximarse a la Gestión Integrada ...

show abstract

Multi‐model and multi‐scenario assessments of Asian water futures: The Water Futures and Solutions (WFaS) initiative

et al. 2017

View full text Add to dashboard Cite

This paper presents one of the first quantitative scenario assessments for future water supply and demand in Asia to 2050. The assessment, developed by the Water Futures and Solutions (WFaS) initiative, uses the latest set of global climate change and socioeconomic scenarios and state-of-the-art global hydrological models. In Asia, water demand for irrigation, industry, and households is projected to increase substantially in the coming decades (30-40% by 2050 compared to 2010). These changes are expected to exacerbate water stress, especially in the current hotspots such as north India and Pakistan, and north China. By 2050, 20% of the land area in the Asia-Pacific region, with a population of 1.6-2 billion, is projected to experience severe water stress. We find that socioeconomic changes are the main drivers of worsening water scarcity in Asia, with climate change impacts further increasing the challenge into the 21st century. Moreover, a detailed basin-level analysis of the hydro-economic conditions of 40 Asian basins shows that although the coping capacity of all basins is expected to improve due to gross domestic product (GDP) growth, some basins continuously face severe water challenges. These basins will potentially be home to up to 1.6 billion people by mid-21st century.Plain Language Summary Home to almost 4.5 billion people, Asia has experienced unprecedented economic and population growth in recent decades. In order to sustain growing food demand and increasing standard of living, water use has been increasing rapidly in many parts of Asia. At present, water withdrawals in Asia represent 65% of the global total. This huge abstraction of water resources has resulted in many Asian regions undergoing pervasive water scarcity conditions. The imminent global changes from climate change and socioeconomic development in Asia are expected to place additional pressures on water resources in the coming decades. In such a context, it is imperative to evaluate future water scarcity conditions and identify regions at highest risk in Asia. We found that by 2050, 20% of the land area in Asia, with population exceeding 1.6-2.0 billion, is projected to experience severe water scarcity. Here, we for the first time highlight that socioeconomic changes are the main driver of worsening water scarcity in Asia, much larger than the climate change impacts.

show abstract

Modeling water scarcity and droughts for policy adaptation to climate change in arid and semiarid regions

Cited by 184 publications

References 29 publications

An integrated analysis of agricultural water-use efficiency: A case study in the Heihe River Basin in Northwest China

An integrated analysis of agricultural water-use efficiency: A case study in the Heihe River Basin in Northwest China

Assessment of Ecosystem Services and Water Accounting Methodologies for Integrated Water Resources Management in water scarce basins.

Multi‐model and multi‐scenario assessments of Asian water futures: The Water Futures and Solutions (WFaS) initiative

Contact Info

Product

Resources

About