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The Juyan Lake (; (モンゴル語:Gashuun Nuur) (shown on Chinese maps as 嘎顺淖尔 ''Gāshùn nào'ěr'' or 嘎顺诺尔, ''Gāshùn nuò'ěr'') for western lake, Sogo Nuur for eastern lake) is a former lake in the Gobi desert. It is located in the western part of Inner Mongolia, in Ejin Banner of the Alxa League, near the border with Outer Mongolia. Goshun Nur had an area of in 1958, of in 1960, and has dried up in 1961. The eastern lake reappeared in 2005. As of August 2012, the area of the lake is .〔(【引用サイトリンク】 title= Lake area as of August 2012 according to the Ejin Weather Station )〕 The Juyan Lake basin is a rare wetland located in a desert. It covers an area of about . The Juyan lake is one of three former terminal lakes located at the outer edges of the Heihe River ('Black River') catchment which formed a large inland delta between the Qilian and the Gobi Altay. The Heihe River is also known as the Ruo Shui (Chinese: 弱水, literally: "weak river"), also Etsin Gol or Ruo He or Ejin River. The basin's boundary is formed by the Mazong Shan mountains to the west, the Heli Shan and Longshou Shan mountains to the south, the Helan Mountains and Lang Shan ranges to the east and the Mongolian Gobi Altay range to the north. ==History== The basin played an important role in ancient times and was historically part of the Gansu Corridor between the 2nd century BC to the 8th century AD. "This territory, called Juyan by the Han Chinese, was maintained and garrisoned by the empire from the time of Emperor Wu until the last century of Later Han. Militarily, the outpost of the Great Wall was important for two reasons: as a supply point for the garrisons in the northwest and, perhaps more significant, as a means to deny this prosperous region to the northern nomads. Left undefended, Juyan would have provided an ideal route for attack against the Chinese commanderies of the corridor itself. 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「Juyan Lake Basin」の詳細全文を読む スポンサード リンク
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