comparison assessment of water use and damage between modern and traditional rice irrigation schemes case of usangu basin, tanzania比较评估现代和传统之间的用水和损伤usangu盆地水稻灌溉计划,坦桑尼亚.pdfVIP

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comparison assessment of water use and damage between modern and traditional rice irrigation schemes case of usangu basin, tanzania比较评估现代和传统之间的用水和损伤usangu盆地水稻灌溉计划,坦桑尼亚.pdf

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comparison assessment of water use and damage between modern and traditional rice irrigation schemes case of usangu basin, tanzania比较评估现代和传统之间的用水和损伤usangu盆地水稻灌溉计划,坦桑尼亚

Int. J. Environ. Res. Public Health 2005, 2(2), 335-342 International Journal of Environmental Research and Public Health ISSN 1660-4601 © 2005 by MDPI Comparison Assessment of Water Use and Damage between Modern and Traditional Rice Irrigation Schemes: Case of Usangu Basin, Tanzania Magayane Machibya1* and Makarius Mdemu2 1Water resources and GIS Specialist, ITECO Consult (T) Limited, P.O.BOX 67371, Dar es Salaam, Tanzania. 2Researcher and Consultant in Water resources, P.O.BOX 12375, Dar Es Salaam, Tanzania *Correspondence to Dr. Magayane Machibya. E-mail: machibya_m@ or mmagayane@ Received: 10 January 2005 / Accepted: 10 April 2005 / Published: 14 August 2005 Abstract: Water management and competition between users in water scarce river basins is a major challenge facing the human race. The inter dependence of users in such basins, necessitates a clear understanding of each user in relation to the location, the water demand, and the duration of water need. The understanding of these factors, together, is very important for the management of water resources in such basins without which, it is argued that, water is overused and wasted. As an example of this, the large modern and improved rice irrigation systems in Tanzania are believed to use water more efficient than the traditional irri