Download or read book Anicut systems in Sri Lanka The case of the Upper Walawe River Basin written by François Molle and published by IWMI. This book was released on 2003 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: This exploratory study was designed to capture the main features of agrarian change in the upper part of the basin that depends mostly on anicuts. These anicuts amount to 59 percent of the total basin anicuts in terms of numbers, but to only 43 percent in terms of irrigated area. They are generally very old (the history of some of them goes back to 2000 years; see below) and obviously, many changes have occurred during this time. The study does not allow the reconstitution of all past transformations but offers some insight on recent changes: changes in population pressure over resources and changes in hydrology, crop choice, livelihoods and collective action. The analysis is based on exploratory surveys carried out by the authors and by students of the University of Sabaragamuwa and is not a detailed or in-depth investigation of agricultural systems in the Upper Walawe basin. However, it provides a useful outline of the situation in this part of the basin.
Download or read book Economics and politics of water resources development Uda Walawe Irrigation Project Sri Lanka written by Molle, Francois, Renwick, M. and published by IWMI. This book was released on 2005 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Uda Walawe Irrigation and Resettlement Project (UWIRP) located in the Southern dry zone of Sri Lanka was initiated in the early 1950s. The original plan for the UWIRP was a highly ambitious social, economic and physical engineering project aimed at creating a modern, profitable agriculture sector. This report examines the history of water resources development and investment decisions for the UWIRP over a period of 50 years and uncovers underlying processes that shaped the evolution of the project and highlights the limitation of viewing development as a mere set of technical and social engineering endeavors.
Download or read book Balancing irrigation and hydropower Case study from Southern Sri Lanka written by Molle, François, Jayakody, Priyantha, Ariyaratne, Ranjith, Somatilake, H. S. and published by IWMI. This book was released on 2005 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report analyzes a case from southern Sri Lanka, where the Samanalawewa dam and the Kaltota Irrigation Scheme (KIS) compete for the water of the Walawe river. At the catchment level, it is shown that dam releases are well attuned to the needs of KIS and to the occurrences of natural runoff, and that little of the dam water is "lost" to the river.
Download or read book Promise Trust and Evolution written by Rucha Ghate and published by Oxford University Press, USA. This book was released on 2008-01-10 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume examines the management of Common Property Resources, like water, forestry, and land, and is intended to provide an account of the transformation of the commons in a rapidly changing South Asia. Contributions cover a wide range of natural resources and deal with issues such as equity, efficiency, productivity, and sustainability.
Download or read book Environmental Water Requirements in Mountainous Areas written by Elias Dimitriou and published by Elsevier. This book was released on 2021-10-19 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Water Requirements in Mountainous Areas presents comprehensive and scientifically sound approaches and methodologies for estimating the environmental water requirements and tradeoffs for water allocation by analyzing anthropogenic and natural water needs. The book covers environmental water management issues in mountainous areas, specifically focusing on the Mediterranean region which exhibits significant contrasts in its demographic and hydrologic features. The authors include paradigms and information that will be useful for water resources managers, decision makers, scientists working in the fields of ecology and water resources management, engineers that design hydraulic works, and environmental policymakers. - Offers a complete background screening on theoretical and practical guidelines on estimating environmental water requirements in mountainous areas - Promotes and guides interdisciplinary work with information on policies and best practices in the field of ecological flows and water resources management - Provides examples and case studies on the successful implementation efforts of ecological flows to analyze lessons learned and overcome practical issues and solutions
Download or read book Examining International Land Use Policies Changes and Conflicts written by Hasnat, G. N. Tanjina and published by IGI Global. This book was released on 2020-11-06 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Though conflicts continue to arise over land use and land cover changes, the conversion of forest land to cropland or other land uses such as housing and urban development have been on the rise in recent years. Decisions regarding land use and land cover influence climate change as well as various natural processes. While proper changes can minimize the effects and speed of climatic changes, the continued adverse changes may be accelerating the deterioration of the world’s condition. Examining International Land Use Policies, Changes, and Conflicts presents the latest research on the present status of land use and land cover changes throughout the world in order to determine appropriate land use policies that can protect earth’s present and future condition. The findings of the studies investigate the conflicts behind the land tenure and land uses in different countries of the world and examines existing policies and the reasons behind changes in them. Ultimately, the book provides readers with knowledge on how land can be managed in a sustained manner, how landscape models are helpful for predicting and determining future land uses, how land can be managed with the best architectural measures, and how urban forestry is helpful for better environmental management and adapting or mitigating climate change effects. Land users, agriculturalists, urban planners, policymakers, government officials, researchers, academicians, and students looking to improve their understanding of this topic for better use of land in the future will find this book to be an asset to their current research.
Download or read book Small tank cascade systems in the Walawe River Basin written by P. G. Somaratne and published by IWMI. This book was released on 2005 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report on small tank cascade systems is based on a study conducted on seven tank cascades of the Walawe river basin, one of the three main river basins in the Ruhuna benchmark basins selected by the International Water Management Institute (IWMI) for its benchmark basin study.The overall objective of this study is to document the situation of small tank cascade systems in the basin, paying special attention to their evolution under agro-ecological, socio-economic and institutional changes on an unprecedented scale in the country after the introduction of open market economic policies in the 1970s, and thereby to contribute to the existing knowledge on small tank cascades, a key feature of water resources in the Dry zone regions2 of Sri Lanka since time immemorial.
Download or read book Irrigation Management Processes and Conditions written by Charles Nijman and published by IWMI. This book was released on 1991 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inland Fisheries in Multiple purpose River Basin Planning and Development in Tropical Asian Countries written by T. Petr and published by Food & Agriculture Org.. This book was released on 1985 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This technical paper presents three case studies of inland fisheries in the context of a multiple-use of land and water resources in the humid tropics of Asia. Two of the three river basins are situated on islands, i.e. the Agno in the Philippines and the Mahaweli in Sri Lanka; one is on mainland Asia, i.e. the Nam Pong Basin in Thailand. Although the river basins have a number of features in common, such as, for example, their size, forest cover and population density, they differ in a number of other environmental aspects and changes induced by the development taking place in their basins. Inland fisheries in all three catchments is represented both by capture and culture components with reservoir fisheries gaining in importance. The studies have shown that while the major constraint to the riverine fisheries has been identified as being the high level of transported sediments originating from eroding lands and mine waste discharge (the Agno Basin), in the reservoirs of Nam Pong and Mahaweli basins it has been the high fishing pressure, in one case non-regulated (Nam Pong), which has caused deterioration of fish stocks. Another constraint in force until recently was of a social (religious) character (Mahaweli Basin). The three studies have shown that in most situations inland fisheries can successfully develop under conditions of the multiple use of the resource.
Download or read book Multiple Uses of Water in Irrigated Areas written by International Water Management Institute and published by IWMI. This book was released on 1999 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is being transferred out of agriculture to meet the growing demand in other areas, often without an agreement of or compensation to farmers with irrigated land and water rights. Furthermore, there is a failure to recognize that irrigation systems supply water not only for the main fields, but also for domestic uses, home gardens, trees and other permanent vegetation, and livestock. Other productive uses include fishing, harvesting of aquatic plants and animals, and a variety of other enterprises such as brick making. In addition, irrigation systems can have a positive or negative effect on wildlife habitats. Thus, the withdrawal of water affects the rural household, rural economy, and the environment in a number of ways. This paper argues that to ensure efficient, equitable, and sustainable water use, to reduce poverty and improve the well-being of the community, irrigation and water resources policies need to take into account all uses and users of water within the irrigation system. The multiple uses of water in the Kirindi Oya irrigation system are examined in this paper. An interdisciplinary group of scientists have investigated a number of areas including water accounting, water quality, household water use, the valuing of water for alternative uses, and the complementarities, competition, and conflicts among uses and users.
Download or read book Water management in rural South India and Sri Lanka written by Collectif and published by Institut français de Pondichéry. This book was released on 2021-07-21 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water resources and their uses and management are - worldwide and on the regional scale of South Asia - one of the main concerns of the environmental and social equilibrium of the new century. These proceedings therefore contribute to the efforts of Indo-French and Sri Lankan-French cooperation to develop scientific collaboration on water management. The contributions by Indian, Sri Lankan and French specialists in the social sciences – historians, economists, sociologists, anthropologists, geographers – as well as specialists in agronomy, soil sciences or forestry, offer critical approaches and data from various disciplines regarding the understanding of water availability and water uses and management in South India and Sri Lanka, along with themes that emerge from these considerations.
Download or read book Agricultural Research for Sustainable Food Systems in Sri Lanka written by Buddhi Marambe and published by Springer Nature. This book was released on 2020-03-30 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: A food system comprises the entire range of actors and interlinked activities related to food production, processing, distribution, marketing and trade, preparation, consumption, and disposal. When a food system operates without compromising the needs of future generations, it is considered to be a “Sustainable Food System.” The present-day food systems in Sri Lanka are diverse, and the natural and physical environment, infrastructure, institutions, society and culture, and policies and regulations within which the food systems operate, as well as the technologies employed, have shaped their outcomes. Agricultural research is a key factor in terms of innovation and technological advances. Innovation has been the main driver of food systems’ transformation over the past few decades and will be critical to addressing the needs of a rapidly growing population in a context of climate change and scarcity of natural resources. In addition, agricultural research must help meet the rising demand for food at affordable prices. Comprising 17 chapters written by specialist(s) in their respective subject-areas, this Contributed Volume on “Agricultural Research for Sustainable Food Systems in Sri Lanka: A Historical Perspective” shares the scientific knowledge accumulated by the National Agricultural Research System of Sri Lanka, including universities, and offers recommendations on how to make food systems more sustainable in order to address the current needs of Sri Lankan society. It presents perspectives on four key thematic areas, namely: (i) Crop and animal production, management, and improvement, (ii) Agro-product processing technologies, (iii) Natural resource management, and (iv) Socio-economic development and agri-business management.
Download or read book Water Scarcity Variations Within a Country written by Upali Ananda Amarasinghe and published by IWMI. This book was released on 1999 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sri Lanka is a country with vast spatial and seasonal variations of water supply and demand. Statistics in the form of aggregated information at national level sometimes mask issues of local water scarcity. But when the same indicators are used at subunit level, a substantial area of the country comes under severe water-scarce conditions. Knowledge of subunit level water scarcities is very important because most of the food requirement of the country at present comes from water-scarce regions and projected additional requirements are also to be met by the same regions.
Download or read book Transactions written by and published by . This book was released on 1976 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Putting Land First written by Diana Montero Melis and published by . This book was released on 2006 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contributed papers presented at the 6th Annual Symposium on Poverty Research in Sri Lanka, held from November 22-24, 2005 at BMICH.
Download or read book Ceylon at the Census of 1911 Being the Review of the Results of the Census of 1911 written by Sir Edward Brandis Denham and published by . This book was released on 1912 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Wetland Directory of Sri Lanka written by and published by . This book was released on 2006 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
