渡良瀬川流域における水利の歴史的開発過程(水利開発誌の書誌的研究,共同研究)
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概要
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In the beginning, man's approach to rivers was passive. However, as he learned to tame and control the river, man progressively came to utilizing it actively--for diverse productive purposes and for the enrichment of human life. Man's efforts in this field came to be systematized in the form of irrigational methods. However, since human efforts towards this end were subject to diverse topographical, climatic and soil conditions, the various methods of irrigation took shape in the form of "river systems"--each characterized by its own distinctive features. This paper examines the Watarase River--the largest tributary of the Tone River system--and chiefly casts light on the historical development of water utilization along the river's right bank (i.e., the Gumma Prefecture side of the Watarase). Although the period in which regional development unfolds in specific regions along a given river differs--depending on the river's length and breadth--development in the case of the Watarase River took place in the order of initially along its middle reaches, then along the upper stream, and finally along the river's lower stream. Development along the upper reaches was dictated by the Watarase's topographic (alluvial fan) conditions and river rights, and along the river's lower reaches by the fact that it becomes a low marshland as it converges with the large Tone River. Thanks to endless efforts aimed at increasing water utilization and maximizing land-improvement projects throughout the Watarase's river basin, the region's agriculture has--through continued adjustments and advances on a broad front--succeeded in attaining its present state of enhancement.
- 日本大学の論文
- 1996-03-31