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The Lhasa River, also called Kyi River (, ), is a northern tributary of the Yarlung Tsangpo River in the south of the Tibet Autonomous Region of China. The Yarlung Tsangpo is the upper section of the Brahmaputra River. The Lhasa River is subject to flooding with the summer monsoon rains, and structures have been built to control the floods. In its lower reaches the river valley is an important agricultural area. The city of Lhasa lies on the river. There are two large hydroelectric power stations on the river, the Zhikong Hydro Power Station (100 MW) and the Pangduo Hydro Power Station (160 MW) ==Basin== The Lhasa River drains an area of , and is the largest tributary of the middle section of the Yaluzangbu River. The average altitude of the basin is around . The basin has complex geology and is tectonically active. Earthquakes are common. The river basin is the center of Tibet politically, economically and culturally. As of 1990 the population was 329,700, of whom 208,700 were farmers. 88% of the people were ethnic Tibetans. The climate is semi-arid monsoon, with a low average temperature of . Average annual precipitation is , with 85% falling in the June-September period. Annual runoff is . Water quality is good, with little discharge of sewage and minimal chemical pesticides and fertilizers. The basin has about of farmland, of which is irrigated. There are of grasslands that may be used for pasturage, and of forest. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lhasa River」の詳細全文を読む スポンサード リンク
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