Historical Development of Rice Paddy Irrigation System and Problems on Water Management in Recent Years : Yamada Diversion Dam Command Area in Japan
Historical Development of Rice Paddy Irrigation System and Problems on Water Management in Recent Years : Yamada Diversion Dam Command Area in Japan
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稻田灌溉系统的历史发展及近年来的水管理问题：日本山田引水坝指挥区
DOI：
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发表时间：
2008
影响因子：
0.6
通讯作者：
Y. Nakano
中科院分区：
文献类型：
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作者：
K. Yuge;Mitsumasa Anan;Y. Nakano
主要河流的稻田灌溉用水量受到《河流法》的限制。对水的利用。在日本，约88.9%的灌溉用水是按照传统取水权取水的，其余11.1%是按照新批准的取水权取水的。由传统取水权供水的控制面积占48.3%，由新批准的取水权供水的控制面积占51.7%。37年前开始的限制水稻过度生产政策影响了水稻区的水管理。为发展现代化农业而进行的土地整理和整治、专职农民数量的减少和老年农民数量的增加也是影响水资源管理的因素。在变化的形势下，如何确定稻田的合理取水量一直是一个有争议的问题。本文介绍了由约400年前修建的山田引水坝供水的典型稻田地区的历史发展。该指挥区的取水量受到传统权利的保护，但最近要求将水分配给其他部门。进行了一些研究以确定该区域附近的合理取水量（Anan等人，2004年）。正如他们在报告中指出的那样，有必要明确影响水资源管理的因素，以便将有限的水资源分配给其他部门。灌溉水的作用不仅是提供生活用水，而且还支持水稻种植和维持输送水位。为了更好地进行未来的水资源配置，讨论了近20年来水资源管理要素的变化。
Water uptakes for rice paddy irrigation in main rivers are restricted by the River Act. on their water utilization. In Japan, about 88.9% of irrigation water is taken following by the traditional right, and remaining 11.1% is following newly approved water intake right. The command area supplied by the traditional water intake right is 48.3% and supplied by newly approved water uptake right is 51.7%. The water managements in rice paddy area have been affected by the restriction of excessive rice production policy started 37 years ago. Land consolidation and improvement for developing the modernized agriculture, decreasing number of full time farmers and increasing number of aged farmers are other factors affecting the water management. It is a matter of argument to make clear the reasonable amount of water intake rate for rice paddy area in the changing situation. In this report, historical development of a typical rice paddy area supplied water by the Yamada diversion dam, originally constructed about 400 years ago is introduced. The amount of water intake in this command area is protected by the traditional right, but recently, it is requested to allocate water to other sectors. Some studies were conducted to determine the reasonable amount of intake water in close to this area (Anan et al., 2004). As pointed in their reports, it is necessary to make clear the factors affecting the water management for allocating limited water to other sectors. The roles of irrigation water are not only for supplying consumed water, but also for supporting rice farming and for keeping water level for delivering. For better water allocation in the future, the changes of water management components during about 20 years are discussed.
影响因子：
2.2
作者：
Mitsumasa Anan;K. Yuge;Y. Nakano;S. Saptomo;Tomokazu Haraguchi
通讯作者：
Mitsumasa Anan;K. Yuge;Y. Nakano;S. Saptomo;Tomokazu Haraguchi