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Diagram showing Inca terrace engineering for agriculture. In the South American Andes, farmers have used terraces, known as andenes, for over a thousand years to farm potatoes, maize, and other native crops. Terraced farming was developed by the Wari culture and other peoples of the south-central Andes before 1000 AD, centuries before they were ...
Inca agriculture was the culmination of thousands of years of farming and herding in the high-elevation Andes mountains of South America, the coastal deserts, and the rainforests of the Amazon basin. These three radically different environments were all part of the Inca Empire (1438-1533 CE) and required different technologies for agriculture .
An andén (plural andenes), Spanish for "platform", [1] is a stair-step like terrace dug into the slope of a hillside for agricultural purposes. The term is most often used to refer to the terraces built by pre-Columbian cultures in the Andes mountains of South America. Andenes had several functions, the most important of which was to increase ...
Changes in farming unit types within the Andean region has also had indirect effects on downstream ecosystems. Specifically within Colombia, with the expansion of Ox Area units causing deforestation, over 63% of the land cover has been replaced by agriculture indirectly increasing the concentration of NH3-N in the water as well as sedimentation ...
These terraces allowed the Inca to utilize the land for farming that they never could in the past. [6] Everything about how the terrace functions, looks, its geometric alignment, etc. all depend on the slope of the land. [6] The different layering of materials is part of what makes the terraces so successful.
The earliest civilizations were on the hyper-arid desert coast of Peru. Agriculture was possible only with irrigation in valleys crossed by rivers coming from the high Andes, plus in a few fog oases called lomas. In the Andes, agriculture was limited by thin soils, cold climate, low or seasonal precipitation, and a scarcity of flat land.
There are at least 14 different shapes of terrace at heights from 2,995 metres (9,826 ft) to 3,450 metres (11,320 ft) metres above sea level. Many are still in use today. The terraces closest to modern Písac are the Andenes Acchapata, which consist of up of 40 individual terraces which extend down to the valley floor and the river.
The first recorded accounts of Inca water transportation structures came from Spanish conquistadores in the sixteenth century. One such explorer was Pedro Cieza de León.In his published chronicles detailing his travels through Peru, he noted seeing a large wall as he headed east from Cuzco, which scholars argue he was referring to the aqueduct at the Piquillacta archeological site.