Bioregion

Yangtze Basin

Also known as: Chang Jiang basin, Yangzi basin, 长江流域

The drainage of the longest river in Asia and the third-longest on Earth — ~1.8 million km², home to ~450 million people. The Yangtze Basin is one of humanity's deepest agricultural civilizations: the world's oldest known rice cultivation (Shangshan and Hemudu sites, ~10,000 years ago), the cradle of cultivated soybean, the historical center of mulberry-silk and tea production, and the agricultural backbone of every Chinese imperial polity. Today the basin includes the world's largest hydropower dam (Three Gorges), the largest freshwater fish capture fishery, and a watershed in active ecological recovery after decades of severe industrial pressure.

Why this entry

The Yangtze Basin is one of humanity’s three or four deepest continuous agricultural civilizations — its food systems and traditional practices are global infrastructure. Future listings of Chinese organic-rice cooperatives, ecological tea producers in Sichuan and Yunnan, mulberry-silk traditional producers, and Tibetan-borderland yak-herding cooperatives anchor here.

What’s distinctive

The basin spans an enormous elevational and climatic range — from the 6,000+ m glaciated peaks of the eastern Tibetan Plateau (the river’s source) through the Sichuan Basin (a fertile inland lowland), the Three Gorges (the deep-cut middle reach now flooded by the dam), the Middle-Lower Yangtze Plain (the lake-and-paddy heart, including Dongting and Poyang lakes), to the Yangtze Delta (the Shanghai-Suzhou-Hangzhou economic core).

The river’s freshwater biodiversity — finless porpoise, Chinese sturgeon, paddlefish (functionally extinct), Yangtze giant softshell turtle, Andrias davidianus Chinese giant salamander — has been catastrophically reduced over the 20th century. A 10-year fishing ban beginning in 2021 is the first serious restoration measure.

The basin is the cradle of the paddy-fish (tian-yu) integrated agricultural system, an ancient practice of stocking rice paddies with carp and other fish that fertilize the rice and provide protein. The system survives in mountain Han, Dong, and Miao communities of the upper basin.

Civilizational and contemporary

Han Chinese, with significant Tibetan, Yi, Miao (Hmong), Dong, Tujia, and Bai populations particularly in the upper and middle basin. Every major Chinese imperial polity has had economic centers along the river — Chang’an (Xi’an, in the Yellow River basin but historically integrated), the Tang and Song dynasties’ agricultural economies, the Ming and Qing’s silk-and-cotton industry along the lower Yangtze. The contemporary basin is the engine of Chinese economic activity and the focal point of Chinese ecological restoration policy.

Sources

Yangtze River Conservation Office (Chinese Ministry of Water Resources)
WWF China — Yangtze program
Wikipedia — Yangtze

What links here, and how

Inbound connections from across the wiki, grouped by lens and by relationship. These appear automatically — every entity page declares what it links to, and that data populates here on the targets.

Scientific

demonstrated by

Founder crops rice domestication in the Yangtze (Shangshan, Hemudu) ~10,000 BP plus soybean and millets in the Yellow River basin
Monsoon the East Asian summer monsoon delivers most of the Yangtze basin's annual precipitation
Neolithic Revolution independent rice-and-millet Neolithic transition in the Yangtze and Yellow River basins, ~10,000–8,000 BCE

Practical