Tottori Plain - Tottori Heiya

The plains are located in the middle and lower reaches of the Sendai River in eastern Tottori Prefecture. In a broader sense, they also include the Kuninaka Plain in the middle reaches. The original form of the plains was a drowned valley from the interglacial and postglacial periods, and isolated hills such as Oroyama, Omokageyama, and the group of small hills in the west were once islands, while Koyama Pond is a remnant of the sea left behind by the siltation of sand dunes and the Sendai River. The remains of a jori structure remain widely on the higher ground of the plains. Takaba no Sho, a manor owned by Todaiji Temple, was once located between Karo and Nosaka on the west bank of the Sendai River, and the Inaba provincial capital was located on the Fukuro River micro-fan in the east. The rice fields on the west bank are irrigated by the Oide Canal, which was excavated by Kamei Korenori, lord of Shikano Castle, during the Tensho period (1573-1592), and the east bank is irrigated by the Yamashiro River Canal. At the center of the plain is the prefectural capital, Tottori City.

[Minoru Iwanaga]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

鳥取県東部、千代(せんだい)川の中・下流部の平野。広義では中流部の国中(くになか)平野も含む。平野の原形は間氷期と後氷期の溺(おぼ)れ谷で、大路(おおろ)山や面影(おもかげ)山、西部の小丘群などの孤立丘(こりつきゅう)はかつての島であり、湖山(こやま)池は砂丘と千代川の埋積作用から埋め残された海跡湖。平野の高位面には広く条里遺構が残る。千代川西岸の賀露(かろ)―野坂(のさか)間にはかつて東大寺領高庭庄(たかばのしょう)が置かれ、また東部の袋(ふくろ)川微扇状地には因幡(いなば)国府が置かれた。西岸の水田は天正(てんしょう)年間（1573～1592）に鹿野(しかの)城主亀井茲矩(かめいこれのり)が掘削した大井手用水(おおいでようすい)により、東岸は山白(やましろ)川用水により灌漑(かんがい)されている。平野の中心は県都の鳥取市。

［岩永　實］

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