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Author: Prakash Mathema
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
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Author: Prakash Mathema
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
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Book Description
Author: Hussain, I.
Publisher: IWMI
ISBN: 9290904704
Category : Water-supply
Languages : en
Pages : 217
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Book Description
Contributed articles presented at the Workshop.
Author: British Library. Document Supply Centre
Publisher:
ISBN:
Category : Conference proceedings
Languages : en
Pages : 836
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Author:
Publisher:
ISBN:
Category : Watershed management
Languages : en
Pages : 180
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Author: Jinapala, K
Publisher: IWMI
ISBN: 9290907207
Category : Agricultural productivity
Languages : en
Pages : 167
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Book Description
Contributed papers presented at the conference organized by International Water Management Institute, Irrigation Dept., Dept. of Agriculture, and Hector Kobbekaduwa Agrarian Research and Training Institute.
Author:
Publisher: Food & Agriculture Org.
ISBN: 9789251055519
Category : Nature
Languages : en
Pages : 148
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Book Description
On the occasion of the International Year of Mountains-2002, FAO and its partners undertook a large-scale assessment and global review of the current status and future trends of integrated and participatory watershed management. The overall objectives were to promote the exchange and dissemination of experiences in implementing watershed management projects in the decade from 1990 to 2000 and to identify the vision for a new generation of watershed management programmes and projects. This resource book represents a summary and critical analysis of the rich discussions and vast materials that emerged during the review, as well as the review's findings and recommendations. It presents the state of the art in watershed management, promotes further reflection and creative thinking and proposes new ideas and approaches for future watershed management programmes and projects. This publication has been written primarily for field-level watershed management practitioners and local decision-makers involved in watershed management at the district or municipality level. It will also be a useful source of information for other readers such as senior officers and consultants specialized in other areas, evaluators, policy-makers and students of watershed management
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.
Author: Tushaar Shah
Publisher: Routledge
ISBN: 1136524037
Category : Business & Economics
Languages : en
Pages : 321
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Book Description
In 1947, British India-the part of South Asia that is today's India, Pakistan, and Bangladesh-emerged from the colonial era with the world's largest centrally managed canal irrigation infrastructure. However, as vividly illustrated by Tushaar Shah, the orderly irrigation economy that saved millions of rural poor from droughts and famines is now a vast atomistic system of widely dispersed tube-wells that are drawing groundwater without permits or hindrances. Taming the Anarchy is about the development of this chaos and the prospects to bring it under control. It is about both the massive benefit that the irrigation economy has created and the ill-fare it threatens through depleted aquifers and pollution. Tushaar Shah brings exceptional insight into a socio-ecological phenomenon that has befuddled scientists and policymakers alike. In systematic fashion, he investigates the forces behind the transformation of South Asian irrigation and considers its social, economic, and ecological impacts. He considers what is unique to South Asia and what is in common with other developing regions. He argues that, without effective governance, the resulting groundwater stress threatens the sustenance of the agrarian system and therefore the well being of the nearly one and a half billion people who live in South Asia. Yet, finding solutions is a formidable challenge. The way forward in the short run, Shah suggests, lies in indirect, adaptive strategies that change the conduct of water users. From antiquity until the 1960‘s, agricultural water management in South Asia was predominantly the affair of village communities and/or the state. Today, the region depends on irrigation from some 25 million individually owned groundwater wells. Tushaar Shah provides a fascinating economic, political, and cultural history of the development and use of technology that is also a history of a society in transition. His book provides powerful ideas and lessons for researchers, historians, and policy
Author: Kensuke Fukushi
Publisher: IWA Publishing
ISBN: 184339362X
Category : Science
Languages : en
Pages : 241
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Book Description
This is the fourth volume in the series of books on the Southeast Asian water environment. The most important articles presented at the Sixth and Seventh International Symposiums on Southeast Asian Water Environment have been selected for this book. It covers water environment management, biological and physico-chemical processes in water and wastewater treatment, monitoring approaches, and water related health issues. This publication is the result of building an academic network among researchers of related fields from different regions to exchange information. This book will be an invaluable source of information for researchers, policy makers, NGOs, NPOs, and those who are concerned with achieving global sustainability within the water environment in developing regions.
Author:
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 82
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Book Description
