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Sichuan Basin

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The Sichuan Basin is a massive lowland region located in southwestern China.

Sichuan Haze
Sichuan Haze

It is also known as the Red Basin or the Szechwan Basin. This region is defined by its unique shape, as it is surrounded by mountains on all sides. This geography creates a distinct area that includes the eastern third of Sichuan Province and the western half of Chongqing Municipality. Because the land is relatively flat and has fertile soil, it supports a very large population. It is often called the breadbasket of China due to its famous rice cultivation.

Chinese plain 5c. BC-en
Chinese plain 5c. BC-en

Water systems are essential to how the basin functions and stays fertile. The upper Yangtze River and its many tributaries drain the entire region. In the westernmost section, the Min River and other rivers enter the basin from the northwest. These rivers fan out to create the Chengdu Plain, which is largely alluvial. Alluvial land is formed by the sediment left behind by flowing water. This flat plain is separated from the rest of the basin by the Longquan Mountains.

Three-gorges-map
Three-gorges-map

The terrain inside the basin varies depending on where you are located. While much of the area is a lowland, many parts are covered in hilly terrain. These rolling hills are actually eroded remnants of the original uplifted Sichuan Basin floor. In the extreme northern basin and in Weiyuan County in the southwest, the landscape changes again. There, you can find ancient, dome-shaped low mountains. These different geological features create a complex landscape within the larger basin structure.

Historically, accessing this region has been a major challenge for travelers and leaders. The mountains surrounding the basin make movement difficult. A famous Chinese poet named Li Bai once described the road to Sichuan as being harder than the road to heaven. In the 4th century BCE, people engineered the Shu Roads to connect the basin to the north. Another famous route is the semi-legendary Stone Cattle Road. It is said that the Qin used this road to conquer the basin in 316 BC.

Dujiang Weir
Dujiang Weir

The basin has also served as a vital link for international trade routes. It acted as a stopover on the southern Silk Road. This provided a direct route between India and China. Additionally, the southern trade route to Tibet passed through the basin. This route eventually crossed the Kham and Derge Kingdom to the west. Even during the Long March in 1935, the movement passed to the west of the basin with great difficulty.

Modern transportation has slowly overcome these ancient geographic barriers. In the 20th century, railways began connecting the basin to the rest of China. The Chengyu Railway connected Chengdu and Chongqing in 1952. The first rail link to the outside world was the Baoji–Chengdu Railway, finished in 1961. In the 21st century, engineers have built many high-speed rail lines. They also use advanced technology to build expressways through the mountains. These roads rely on massive tunnels and bridges, such as the Sidu River Bridge, to cross the rugged terrain.

Siduhe Bridge-1
Siduhe Bridge-1

The Sichuan Basin is home to a massive and growing population. Today, approximately 100 million people live within the basin.

Population density-CROPPED-Sichuan
Population density-CROPPED-Sichuan

Major urban centers include the capital of Sichuan, Chengdu, and the municipality of Chongqing. Other significant cities include Mianyang, Leshan, Yibin, and Zigong. This high population density is possible because of the productive agricultural land. The region is also a growing hub for modern industries. These include high-tech, aerospace, and petroleum sectors.

Beyond geography and industry, the basin is a unique cultural sphere. It is distinguished by its own specific customs, dialects, and cuisine. Sichuanese cuisine is famous worldwide for its unique flavors and high levels of spiciness.

La Zi Ji (Chicken with Chiles) (2269517013)
La Zi Ji (Chicken with Chiles) (2269517013)

The people also speak Sichuanese, which is a branch of Mandarin Chinese. This dialect is so distinct that it is barely mutually intelligible with Standard Mandarin. It is spoken throughout eastern Sichuan, Chongqing, southern Shaanxi, and western Hubei.

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🖼️ Images & Media (8)
File:Three-gorges-map.png
Three-gorges-map.png
File:Sichuan Haze.jpg
Sichuan Haze.jpg
File:China - Emei Shan 1 - lush misty forest (135959880).jpg
China - Emei Shan 1 - lush misty forest...
File:Chinese plain 5c. BC-en.svg
Chinese plain 5c. BC-en.svg
File:Dujiang Weir.jpg
Dujiang Weir.jpg
File:Population density-CROPPED-Sichuan.png
Population density-CROPPED-Sichuan.png
File:La Zi Ji (Chicken with Chiles) (2269517013).jpg
La Zi Ji (Chicken with Chiles) (2269517013).jpg
File:Siduhe Bridge-1.jpg
Siduhe Bridge-1.jpg
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