Yangtze

The Yangtze River, Yangzi River (English: /ˈjæŋtsi/ or /ˈjɑːŋtsi/) or Chang Jiang (simplified Chinese: 长江; traditional Chinese: 長江; pinyin: Cháng Jiāng; lit. 'long river') is the longest river in China and the third-longest river in the world. It rises at Jari Hill in the Tanggula Mountains of the Tibetan Plateau and flows, 6,374 km (3,961 mi) including the Dam Qu River, the longest source of the Yangtze, in a generally easterly direction to the East China Sea. It is the fifth-largest primary river by discharge volume in the world. Its drainage basin comprises one-fifth of the land area of China, and is home to nearly one-third of the country's population.

The Yangtze has played a major role in the history, culture, and economy of China. For thousands of years, the river has been used for water, irrigation, sanitation, transportation, industry, boundary-marking, and war. The Yangtze Delta generates as much as 20% of China's GDP, and the Three Gorges Dam on the Yangtze is the largest hydro-electric power station in the world. In mid-2014, the Chinese government announced it was building a multi-tier transport network, comprising railways, roads and airports to create a new economic belt alongside the river.

The Yangtze flows through a wide array of ecosystems and is habitat to several endemic and threatened species, including the Chinese alligator, the narrow-ridged finless porpoise, and also was the home of the now extinct Yangtze river dolphin (or baiji) and Chinese paddlefish, as well as the Yangtze sturgeon, which is extinct in the wild. In recent years, the river has suffered from industrial pollution, plastic pollution, agricultural runoff, siltation, and loss of wetland and lakes, which exacerbates seasonal flooding. Some sections of the river are now protected as nature reserves. A stretch of the upstream Yangtze flowing through deep gorges in western Yunnan is part of the Three Parallel Rivers of Yunnan Protected Areas, a UNESCO World Heritage Site.

Cháng Jiāng (长江; 長江), meaning "Long River", is the name for the river in Chinese. However, the Chinese have given different names to sections of the river (it is from an ancient name to only a part of the river that the modern English name derives – see below).

In Old Chinese, the Yangtze was simply called Jiang/Kiang 江, a character of phono-semantic compound origin, combining the water radical 氵 with the homophone 工 (now pronounced gōng, but *kˤoŋ in Old Chinese). Kong was probably a word in the Austroasiatic language of local peoples such as the Yue. Similar to *krong in Proto-Vietnamese and krung in Mon, all meaning "river", it is related to modern Vietnamese sông (river) and Khmer krung (city on riverside), whence Thai krung (กรุง capital city), not kôngkea (water) which is from the Sanskrit root gáṅgā.

By the Han dynasty, Jiāng had come to mean any river in Chinese, and this river was distinguished as the "Great River" 大江 (Dàjiāng). The epithet 長 (simplified version 长), meaning "long", was first formally applied to the river during the Six Dynasties period.^{[citation needed]}

Various sections of the Yangtze have local names. From Yibin to Yichang, the river through Sichuan and Chongqing Municipality is also known as the Chuān Jiāng (川江) or "Sichuan River". In Hubei, the river is also called the Jīng Jiāng (荆江; 荊江) or the "Jing River" after Jingzhou, one of the Nine Provinces of ancient China. In Anhui, the river takes on the local name Wǎn Jiāng after the shorthand name for Anhui, wǎn (皖). Jinsha ("Gold Sands") River refers to the 2,308 km (1,434 mi) of the Yangtze from Yibin upstream to the confluence with the Batang River near Yushu in Qinghai, while the Tongtian ("Leading to Heaven") River describes the 813 km (505 mi) section from Yushu up to the confluence of the Tuotuo River and the Dangqu River.^{[citation needed]}

Yángzǐ Jiāng (揚子江; 扬子江) or the "Yangzi River", from which the English name Yangtze is derived, is the local name for the Lower Yangtze in the region of Yangzhou. The name likely comes from an ancient ferry crossing called Yángzǐ or Yángzǐjīn (揚子 / 揚子津). Europeans who arrived in the Yangtze River Delta region applied this local name to the whole river.