Aztec Chinampa System May Be Answer for Local Sustainability – TubeFire

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How the Aztecs could improve modern urban farming – Phys.org
The chinampa system, commonly called floating gardens, is still practiced in certain suburban areas in Xochimilco, in the southern valley of Mexico City. These raised fields are constructed by digging the canals and mounding the displaced earth onto platforms. Similar historic raised field systems can be found in South America, Asia, Oceania, and parts of Africa.
In a chinampa, the canal water rises through capillary action to the plant roots, which reduces irrigation demand. Additionally, a considerable portion of the soil fertility is generated in the canal floors. Complex rotations allow up to seven harvests in a year. Chinampas also provide ecosystem services, particularly greenhouse gas sequestration and biodiversity. In addition, the recreational benefits are tremendous: today, chinampas generate even more money from tourism than by horticultural production.
Ebel discovered the chinampa to be one of the most intensive and prolific production systems ever developed, and it is highly sustainable. It can be kept in almost continuous cultivation, and the microclimate is favorable for many horticultural crops, including ornamentals, which play an increasingly important role in Xochimilco. Even small animals can be raised on chinampas.