This river is about 1,700 km long and flows along the border between the states of Maranhão and Piauí in northeastern Brazil. It originates in the Mangabeiras mountain range in the northern part of the Brazilian plateau, flows roughly northeast, turns north near Floriano, passes through Teresina, the capital of Piauí state, and empties into the Atlantic Ocean near Parnaiba. Most of the basin is semi-arid, and the flow rate drops significantly in the dry season. For this reason, cultivation on the várzea (floodplain) is important. [Nishizawa Toshie] Source: Heibonsha World Encyclopedia, 2nd Edition Information |
ブラジル北東部のマラニョン州とピアウイ州の州境を流れる全長約1700kmの川。ブラジル高原北部のマンガベイラス山地に源を発し,ほぼ北東方向に流れ,フロリアノ付近で北に向きを変え,ピアウイ州の州都テレジナを通って,パルナイバ近くで大西洋に注ぐ。流域の大半が半乾燥地域で,乾季には流量が著しく減少する。そのためバルゼア(はんらん原)での耕作が重要である。【西沢 利栄】
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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