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Of the four major ways of storing water –in the soil profile, in underground aquifers, in small reservoirs, and in large reservoirs behind dams–the first is possible only for relatively short periods of time. In this paper, the authors concentrate on the three kinds of long-term technologies, and compare the hydrological, operational, economic and environmental aspects of each.
By 2025, one-third of the population of the development world will face severe water shortages (Seckler et al. 1998). Yet, even in many water-acarce regions, large amounts of water annually flood out to the sea. Some of this floodwater is is committed flow to flush salt and other harmful products out of the system and to maintain the ecological aspects of estuaries and coastal areas (Molden 1997). However, in many cases, the floodwater is not fully utilized; and, of course, the floods themselves can do a great deal of harm.
In an era of abundance, at least part of humanity has stopped thinking about the future provision of basic vital resources such water, energy and food. Storage actions, with all their variants whether real or imagined, are sources of innovation in the provision and treatment of crucial resources. This book deals with cases of water, food, energy and biodiversity storage as a response to a new era of scarcity. Examining multilevel storage policies, consumers’ practices and local organisations, author Giorgio Osti explores a variety of examples such as the need to stock agriculture produce, the industry and practices of food conservation, the role of artificial water basins in controlling floods and droughts and the development of batteries able to compensate for the intermittence of renewable energy sources. Storage and self-sufficiency can be achieved in many technical ways, at different territorial levels and according to different policies or philosophies. Being more a grasshopper or an ant - the two extreme positions - depends not only on the technologies available but also on different analyses of the environment and different attitudes to the future. This book offers an environmentalist perspective that uncovers hidden or absent activities of ultramodern societies that will be useful to students of environmental sociology as well as those researching and studying at the interface of environmental studies and geography.
This Book includes selected papers that has been published in the Water journal Special Issue (SI) on Water Supply and Water Scarcity. Moreover, an overview of the SI is included. The papers selected for publication in the SI include review and research papers on water history, on water management issues under water scarcity regimes, on rainwater harvesting, on water quality and degradation, and on climatic variability impacts on water resources. Overall, the issue identify and highlight the main challenges in water sector, and particularly in management and protection of water resources and in use of alternative (non-conventional) water resources, especially in areas with demographic change and climate vulnerability in order to achieve sustainable and secure water supply. Furthermore, general guidelines and possible solutions for an improved and sophisticated water management system are proposed and discussed, such as the adoption of advanced technological solutions and practices that improve water-use efficiency and the use of alternative water resources, to address the growing environmental and health issues and to reduce the emerging conflicts among water users.
The report aims to provide a conceptual framework to address food security under conditions of water scarcity in agriculture. It has been prepared by a team of FAO staff and consultants in the framework of the project "Coping with water scarcity - the role of agriculture", and has been discussed at an Expert Consultation meeting organized in FAO, Rome, during the period 14-16 December 2009 on the same subject. It was subsequently edited and revised, taking account of discussions in the Expert Consultation and materials presented to the meeting. The purpose of the Expert Consultation was to assist FAO to better design its water scarcity programme. In particular, the experts were requested to provide recommendations on the range of technical and policy options and associated principles that FAO should promote as part of an agricultural response to water scarcity in member countries. The document offers views on the conceptual framework on which FAO's water scarcity programme should be based, proposes a set of definitions associated with the concept of water scarcity, and indicates the main principles on which FAO should base its action in support to its member countries. At the meeting, experts were requested to review the draft document and provide feedback and recommendations for its finalization. Issues that were addressed in discussions included: 3⁄4 Water scarcity: agreement on key definitions. 3⁄4 The conceptualisation of water scarcity in ways that are meaningful for policy development and decision-making. 3⁄4 The quantification of water scarcity. . 3⁄4 Policy and technical response options available to ensure food security in conditions of water scarcity. . 3⁄4 Criteria and principles that should be used to establish priorities for action in response to water scarcity in agriculture and ensure effective and efficient water scarcity coping strategies.
Uncharted Waters: The New Economics of Water Scarcity
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
In the last decade, water resources planners have frequently signalled an impending water crisis. The message is that the world is running out of water and that only by careful planning and the adoption of integrated water resources management can catastrophe be avoided. Stephen Brichieri-Colombi challenges these perceptions. He maintains that the crisis is one of resource management rather than availability: it arises because water resource planners advocate exploitation of rivers without due regard to social, environmental and geopolitical consequences. The author advances a new paradigm - water in the national economy - which will enable developing countries to meet future food and water demands without increasing abstraction from rivers and consequential riparian conflict. This is a powerful re-appraisal of the development of global water resources.
One of the main problems confronting the world of the 21st Century is a shortage of water. There is already severe scarcity in many regions of the world, causing tremendous problems for local populations and indeed entire societies. There is insufficient water available for the production of food to alleviate poverty and starvation; the lack of water hampers industrial, urban and tourism development, forcing restrictions on other sectors, especially agriculture; health problems arise as the deterioration of ground and surface waters favours water-borne diseases, which flourish in the absence of decent water distribution and sewerage systems. Water conflicts still arise in areas under stress, while water for nature has become a vanishing priority in such zones. This book is a guide to the establishment of regional and/or local guidelines for developing and implementing new ideas for coping with water scarcity. The basic premise underlying the book is that water scarcity will persist, so personal, human and society-wide skills will be needed to cope with it while living in harmony with the necessary environmental constraints. The book provides basic information to assist decision makers, water managers, engineers, agronomists, social scientists and other professions (and their students) in formulating coherent, hopefully harmonious and consolidated views on the issue. Guidelines are also given for introducing the general public to the concept of water scarcity and how to deal with it.
This book is the result of a joint research effort led by the U.S. National Academy of Sciences and involving the Royal Scientific Society of Jordan, the Israel Academy of Sciences and Humanities, and the Palestine Health Council. It discusses opportunities for enhancement of water supplies and avoidance of overexploitation of water resources in the Middle East. Based on the concept that ecosystem goods and services are essential to maintaining water quality and quantity, the book emphasizes conservation, improved use of current technologies, and water management approaches that are compatible with environmental quality.