World Water Demand and Supply, 1990 to 2025 PDF Download
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Author:
Publisher: IWMI
ISBN: 9290903546
Category : Irrigation
Languages : en
Pages : 50
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Book Description
Presents two alternative scenarios of water demand and supply for 118 countries over the 1990 to 2025 period and develops indicators of water scarcity for each country and for the world as a whole. This study is the first step in IWMI’s long-term research goal: to determine the extent and depth of water scarcity, its consequences for individual countries and what can be done about it.
Author:
Publisher: IWMI
ISBN: 9290903546
Category : Irrigation
Languages : en
Pages : 50
Get Book Here
Book Description
Presents two alternative scenarios of water demand and supply for 118 countries over the 1990 to 2025 period and develops indicators of water scarcity for each country and for the world as a whole. This study is the first step in IWMI’s long-term research goal: to determine the extent and depth of water scarcity, its consequences for individual countries and what can be done about it.
Author: Upali A. Amarasinghe
Publisher: IWMI
ISBN: 9290907932
Category :
Languages : en
Pages : 36
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Book Description
A review of global water demand projections (WDPs) show substantial over- or under-estimation. The pre-1990 WDPs, with population as the main driver of change, over-projected current water use by 20 to 130%. The post-1990 WDPs, with sophisticated modeling frameworks, show substantial underestimation under the ‘business-as-usual’ scenarios and are more downward biased under sustainable scenarios. Overall, the value of long-term country-level projections in global WDPs is inadequate for local water resource planning. To increase the accuracy and value of global WDPs, future WDPs should take into account the spatial variation and influence of rapidly changing key exogenous and endogenous drivers of water demand in different sectors across and within countries, and provide a sensitivity analysis of projections.
Author: Mark W. Rosegrant
Publisher: Intl Food Policy Res Inst
ISBN: 0896296466
Category : Business & Economics
Languages : en
Pages : 36
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Book Description
A thirsty world; Alternative futures for water; Consequences of key policy changes; Implications for the future.
Author:
Publisher:
ISBN:
Category : Food supply
Languages : en
Pages : 26
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Book Description
Author: Peter H. Gleick
Publisher: Island Press
ISBN: 9781597262798
Category : Nature
Languages : en
Pages : 362
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Book Description
Author: Steven Renzetti
Publisher: Springer Science & Business Media
ISBN: 1461508657
Category : Business & Economics
Languages : en
Pages : 196
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Book Description
This book arose out of a paper that I wrote for the World Bank at the request of Ariel Dinar, the editor for the series in which this volume appears. I began that paper by pointing to the growing importance of demand-side considerations in water resources: "The provision of potable water is one of government's oldest functions with evidence of this activity stretching back thousands of years. During much of that time, water demands were taken as exogenously given and the principle task of authorities was defined as an engineering one: how to supply a given quantity of water at least cost. In recent years, however, concerns have arisen from observations of excessive water use, degraded water quality and continued inadequate service for many, especially the very poor. As a result of these and other concerns, there is a growing effort to view water resource allocation from a perspective that incorporates consumers' preferences along with supply constraints into management plans. " (Renzetti, 2000, p. 123). The purpose of this volume is to examine, in greater detail than was possible in that article, what is known regarding the economic characteristics of the demand for water. Thus, this book is meant to be an extended critical review of the state of the art.
Author: Catherine M .Marquette
Publisher: EOLSS Publications
ISBN: 184826173X
Category :
Languages : en
Pages : 390
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Book Description
Water and Development is a component of Encyclopedia of Water Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. Water is perhaps the most critical natural resource upon which humans depend. Agricultural and food production, trade and ultimately the economic development of all regions of the world depend on rivers, streams, dams, oceans and other water resources. This critical relationship has persisted through the agricultural and industrial revolution and into the era of economic globalization. The relationship between human activity and the water resources on which it depends also continues to be reciprocal. Human consumption, energy, agricultural, industrial and other economic activity have significant impacts on water quality and quantity for better or worse. A key element of sustainable development rests on our global capacity to interact with the water resources on which we depend in ways that preserve them for our use and that of future generations. The two volumes on the subject present some of the topics such as Water, Agriculture and Food Interactions, dams, water valuation, arid regions, water-management, and Conflict over Water Resources, Water and Sustainable Development: They consider the implications which contributions have in each of these areas as well as introduce additional issues relating to the future of dams, innovative ways of increasing water supply, transboundary water resources, and the implications of global climate change for water resources. These two volumes are aimed at the following five major target audiences: University and College students, Educators, Professional practitioners, Research personnel and Policy analysts, Managers, and Decision makers and NGOs
Author: Ashok Swain
Publisher: Routledge
ISBN: 1135768838
Category : Nature
Languages : en
Pages : 242
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Book Description
Water scarcity and the use of international river system resources can not only cause international conflict but can also bring about peace and co-operation. This book looks at the current stresses and likely future scenarios.
Author: Nilgun Harmancioglu
Publisher: IWMI
ISBN: 9290904291
Category : Irrigation
Languages : en
Pages : 66
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Book Description
This report is intended to serve as reference and guide for researchers and policy makers linked to water resources development in Turkey and elsewhere. The topics covered include: recent developments in the water sector, the epidemiology and control of malaria and schistosomiasis, the use and effects of pesticides in irrigated agriculture, water quality issues and standards and the relationship between irrigation and wetlands.
Author: Luis Catasús Guerra
Publisher: IWMI
ISBN: 9290903694
Category : Agricultural productivity
Languages : en
Pages : 33
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Book Description
Over the past decade, we have witnessed a growing scarcity of and competition for water around the world. As the demand for water for domestic, municipal, industrial, and environmental purposes rises in the future, less water will be available for agriculture. But the potentials for new water resource development projects and expanding irrigated area are limited. We must therefore find ways to increase the productivity of water used for irrigation. This paper reviews the literature on irrigation efficiency and on the potential for increasing the productivity of water in rice-based systems. It stresses the continuing confusion over the concepts of irrigation efficiency and water productivity. It identifies the reasons for the wide gap between water requirement and actual water input (both irrigation diversions and rainfall) in irrigated rice production systems and discusses potential opportunities for increasing water productivity both on-farm and at the system level. Based on the reported low farm and system level irrigation efficiencies, the potentials for water savings in rice production appear to be very large. But we do not know the degree to which various farm and system interventions will lead to sustainable water savings in the water basin until we can quantify the downstream impact of the interventions. Studies on the economic benefits and costs, and environmental aspects of alternative interventions are also lacking. This paper emphasizes the need to measure the productivity of water at farm, system, and basin levels, and to understand how the productivity at one level relates to the productivity at another. Without water balance studies to measure productivity at these different scales, it is not possible to identify the potential economic benefits of alternative interventions and the most appropriate strategies for increasing irrigation water p productivity in rice-based systems.
