Weiyuan agriculture system in
Houxuan Zhang
Jianghan Plain, Central Hubei Province, China.
2025
The Weiyuan system is primarily distributed across the low-lying floodplains of central and southern China, particularly in the Jianghan Plain between the Yangtze and Han Rivers. This region receives extensive upstream runoff from the Sichuan Basin and middle Yangtze tributaries, resulting in prolonged summer flooding during the monsoon season. Over thousands of years, repeated overbank flows deposited nutrient-rich sediments across the plain, creating fertile but flood-prone land. Early human settlements gradually responded by building small embankments (wei) to isolate manageable units of land, followed by drainage and internal canal construction to create enclosed agricultural fields (yuan).
These spatial interventions formed a dynamic relationship between hydrological patterns and land use, allowing for controlled cultivation within an inherently unstable flood landscape. The accumulation of silt not only enriched the soil but also changed local topography, prompting further adaptation.
Agricultural production in the Weiyuan system was shaped by both collective labor and adaptive water management practices. Farmers worked together to construct and maintain embankments, canals, and sluices, enabling controlled irrigation and drainage. Traditional techniques such as using wooden waterwheels to lift river water into the fields were widespread, particularly during dry periods.
Circular Stories
At the center of each embanked unit (wei), slightly elevated ground known as gaotian (high fields) formed the core agricultural zone. These areas, either naturally raised or gradually built up through years of sedimentation and tillage, were relatively dry and stable. Farmers used them for intensive grain cultivation, especially wheat, cotton, and later hybrid rice.
Surrounding the gaotian, juru zones formed a transitional belt that responded quickly to seasonal rainfall and upstream backflow. These areas held water longer than the high fields but remained accessible and cultivable in low-water periods. Farmers adapted by planting fast-growing or water-tolerant crops such as early rice or lotus, or by leaving them temporarily fallow to serve as runoff buffers. The juru thus absorbed hydrological fluctuation, functioning as flexible “lungs” between the more fixed inner core and the flood-exposed periphery. They were not formally enclosed, yet their role in storing, delaying, and diffusing water made them critical to the internal water regulation of each unit.
