Mesoamerican Chinampa Floating Agriculture

Timeline

1. c. 1000–1200Xochimilco lake area · Mexico CityIn the Postclassic Valley of Mexico, city-states experimented with staked fields and canal irrigation in lake wetlands, gradually developing a chinampa system allowing multiple crops year-round, sharply raising maize, bean, and chili yields.
2. c. 1200–1520Around Tenochtitlan · Mexico CityThe Aztec Triple Alliance used chinampa yields to sustain the capital and tribute system; canal networks linked fields to markets, making chinampa a technical pillar of imperial finance and food security.
3. c. 1520–1900Valley of Mexico · MexicoSpanish colonists introduced new crops and drained land on a large scale; chinampa area shrank but survived locally in places like Xochimilco due to poor transport, integrating into the colonial agricultural economy.
4. c. 1987Xochimilco · Mexico CityThe Xochimilco chinampa canals are listed as World Heritage; local farmers continue traditional cultivation of flowers and vegetables, and chinampa has become an important carrier of urban ecology and cultural tourism.