Bulletin of the Graduate School of Education, Hiroshima University. Part. II, Arts and science education Issue 66
2017-12-22 発行

扇状地性段丘地形における新田開発の水利の特徴 : 広島県西条盆地南部,柏原地区を事例に

Characteristics of Irrigation of Reclaimed Land in the Early 19th Century on Fan Tableland: A Case of Kashobara, Southern Part of Saijo Basin, Central Hiroshima, SW Japan
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abstract
This study clarified the characteristics of irrigation system of reclaimed land in the early 19th century on fan tableland in Kashobara, southern part of Saijo Basin, Hiroshima, SW Japan based on physical geographical and literature historical methods. The most important to open the reclaimed land on fan tableland for rice fields in those days was to obtain sufficient water for agriculture through a newly-built irrigation system. I identified the relationship the dirrigation system and landform using the 5m grid Digital Elevation Model, air photos and mapping of irrigation pattern by handy GPS. Descriptions of official documents relating the reclaimed land written by the chief of village, and information of detailed drawings of planning of the reclaimed land in those days, provided us to understand the then planner's intention to collect and distribute the waters to cultivated land on tableland. This fact contributed to development of transdisciplinary lesson between geography and Japanese history for school education.
subject
irrigation
terrace landform
reclaimed land
Saijo Basin
Digital Elevation Model
水利
段丘地形
新田開発
西条盆地
デジタル標高モデル