在长江的上游。
长江沿岸城市众多,自上游到下游依次是四川宜宾、泸州、重庆、涪陵、万州、宜昌、荆州、武汉、黄石、鄂州、九江、安庆、铜陵、芜湖、南京、上海。
长江发源于“世界屋脊”——青藏高原的唐古拉山脉各拉丹冬峰西南侧,于崇明岛以东注入东海,全长6387公里,在世界大河中长度仅次于非洲的尼罗河和南美洲的亚马逊河,居世界第三位
长江干流:
上游
长江干流宜昌市以上为上游,长4504千米,占长江全长的70.4%,控制流域面积100万平方千米。宜宾市以上称金沙江,长3464千米,落差约5100m,约占全江落差的95%,河床比降大,滩多流急,加入的主要支流有雅砻江;宜宾至宜昌长1040千米,加入的主要支流,北岸有岷江、嘉陵江,南岸有乌江。
中游
宜昌市至湖口县为中游,长955千米,流域面积68万平方千米,本段加入的主要支流,南岸有清江及洞庭湖水系的湘、资、沅、澧等四水和鄱阳湖水系的赣、抚、信、修、饶等五水,北岸有汉江,本段自枝城至城陵矶为著名的荆江,南岸有松滋、太平、藕池、调弦(已堵塞)四口分水和洞庭湖、水道最为复杂。
下游
湖口县至出海口为下游,长938千米,面积12万平方公里,加入的主要支流有南岸的青弋江、水阳江水系、太湖水系和北岸的巢湖水系。
In the upper reaches of the Yangtze River.
There are many cities along the Yangtze River, from the upper reaches to the lower reaches, they are Yibin, Luzhou, Chongqing, Fuling, Wanzhou, Yichang, Jingzhou, Wuhan, Huangshi, Ezhou, Jiujiang, Anqing, Tongling, Wuhu, Nanjing, and Shanghai.
The Yangtze River originates from the southwest side of the Geladandong Peak of the Tanggula Mountains on the Qinghai-Tibet Plateau, the "Roof of the World", and flows into the East China Sea east of Chongming Island. It is 6,387 kilometers long, and ranks third in the world among the world's major rivers, second only to the Nile River in Africa and the Amazon River in South America.
Mainstream of the Yangtze River:
Upper reaches
The upper reaches of the Yangtze River are above Yichang City, 4,504 kilometers long, accounting for 70.4% of the total length of the Yangtze River, and controlling a basin area of 1 million square kilometers. The Jinsha River is called Jinsha River above Yibin City, which is 3464 kilometers long and has a drop of about 5100m, accounting for about 95% of the drop of the whole river. The riverbed has a large gradient, many beaches and rapids. The main tributaries added are Yalong River; Yibin to Yichang is 1040 kilometers long, and the main tributaries added are Minjiang River and Jialing River on the north bank and Wujiang River on the south bank.
Middle Reaches
Yichang City to Hukou County is the middle reaches, which is 955 kilometers long and has a drainage area of 680,000 square kilometers. The main tributaries added in this section are Qingjiang River and Xiang, Zi, Yuan, Li River of Dongting Lake Water System and Gan, Fu, Xin, Xiu, Rao River of Poyang Lake Water System on the south bank, Hanjiang River on the north bank, and the famous Jingjiang River from Zhicheng to Chenglingji in this section. There are four water diversions of Songzi, Taiping, Ouchi and Diaoxian (blocked) on the south bank and Dongting Lake, and the waterway is the most complicated.
Downstream
The downstream is from Hukou County to the estuary, which is 938 kilometers long and covers an area of 120,000 square kilometers. The main tributaries include the Qingyi River, Shuiyang River system, Taihu Lake system on the south bank and Chaohu Lake system on the north bank.
Yunnan Province is located in the upper reaches of the Yangtze River. The Yangtze River originates in Qinghai Province. The source is called Tongtian River. The section of the river that flows into Yunnan through Qinghai and Sichuan is called Jinsha River. The Jinsha River makes a big turn from south to east in Lijiang, Yunnan. It flows from west to east in Sichuan and Yunnan provinces to Yibin City, Sichuan Province. It continues to flow east in Yibin. From Yibin, the river is called Yangtze River. The Yangtze River is divided into three sections below the source, namely the section above Yibin is Jinsha River, which is also the upper reaches of the Yangtze River. The section below Yibin is the middle and lower reaches of the Yangtze River. Therefore, Yunnan Province is in the Jinsha River section of the upper reaches of the Yangtze River.
Yunnan is in the upper reaches of the Yangtze River. The Yangtze River is called Liunan River in Yunnan
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