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The original Dujiangyan irrigation system was destroyed by the 1933 Diexi earthquake. The current Dujiangyan irrigation system was rebuilt after the Diexi earthquake in 1933 by Zhang Yuan (张沅) and his sons, including Zhang Shiling (张世龄). [citation needed] In 2000, Dujiangyan became a UNESCO World Heritage Site. Today it has become a ...
By the time of the Han dynasty, much of the canal had silted up and only a small section was still flowing. Under the supervision of engineer Bai Gong, a new canal was cut in 95 BC for irrigation. For the next 2000 years, re-cutting and moving the canal's feeder mouth upstream of the Jing River became a pattern as silt built up and river bed ...
The Yuan Dynasty saw the establishment of a government body in the form of a "Si" (司) near the capital to oversee the canal system. Known as the Huai & Yangtze Rivers Grain Transport Office, (江淮都漕运司) this was an offshoot of the Three Departments and Six Ministries of the administrative third grade or " San Pin " (三品).
A Chinese ceramic model of a well with a water pulley system, excavated from a tomb of the Han Dynasty (202 BCE – 220 CE) period. Some of the earliest evidence of water wells are located in China. The Neolithic Chinese discovered and made extensive use of deep drilled groundwater for drinking.
Han dynasty grey pottery—its color derived from the clay that was used—was superior to earlier Chinese grey pottery due to the Han people's use of larger kiln chambers, longer firing tunnels, and improved chimney designs. [15] Kilns of the Han dynasty making grey pottery were able to reach firing temperatures above 1,000 °C (1,830 °F). [15]
Conscripts also maintained canal systems used for agricultural transport and irrigation. [94] Some of the larger Han canal renovation projects included repairs to the Dujiangyan Irrigation System and Zhengguo Canal, built by the previous State of Qin and Qin dynasty (221–206 BC), respectively. [94]
Statue of Li Bing at Erwang Temple, Dujiangyan, sculpted during the Eastern Han Dynasty (25-220 AD). Li Bing (Chinese: 李冰; pinyin: Lǐ Bīng; c. 3rd century BC) was a Chinese hydraulic engineer and politician of the Warring States period.
As China is the biggest food producer and importer in the world, what happens in the agricultural sector of China has an immediate effect on the global food system. China increased its grain self sufficiency by expanding agriculture areas to regions with less rain, giving them water with irrigation systems.
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