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Irrigation versus hydropower: sectoral conflicts in southern Sri Lanka

机译:灌溉与水力发电:斯里兰卡南部的部门冲突

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摘要

Although hydropower does not directly consume water, its generation frequently conflicts with other uses, notably irrigation, because its release schedule does not always correspond to the timing of water use by other activities. This article analyses a case from the Walawe river basin, Sri Lanka, where economic efficiency can be raised by reducing releases from the dam for irrigation for the benefit of hydropower generation. The tradeoff is analysed in financial and managerial terms and different options for reducing irrigation diversions are reviewed. Although the high level of current diversions for irrigation warrants the possibility of improvement in management, it is shown that finding ways to reduce supply faces technical and socio-political constraints that make the realization of economic benefits costly and difficult.
机译:尽管水力发电并不直接消耗水,但其发电经常与其他用途(尤其是灌溉)相冲突,因为其释放时间表并不总是与其他活动用水的时间相对应。本文分析了斯里兰卡瓦拉维河流域的一个案例,该案例可以通过减少大坝的灌溉释放量来提高水力发电的效率,从而提高经济效率。在财务和管理方面对折衷进行了分析,并审查了减少灌溉转移的各种选择。尽管目前对灌溉的大量转移保证了改善管理的可能性,但事实表明,寻找减少供应的方法面临着技术和社会政治方面的限制,这些限制使得实现经济利益的成本高昂且困难。

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