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Terraces were built to permit agriculture in the rugged terrain of the Andes. The heartland of the Inca Empire was in the high plateaus and mountains of the Andes of Peru. This area is mostly above 3,000 metres (9,800 ft) in elevation and is characterized by low or seasonal precipitation, low temperatures, and thin soils.
Rice terraces in Sa Pa, Vietnam. Rice terraces of the Hani people in Yunnan, China. Rice terrace in the Fukuoka Prefecture, Japan. In agriculture, a terrace is a piece of sloped plane that has been cut into a series of successively receding flat surfaces or platforms, which resemble steps, for the purposes of more effective farming.
The material used in the Inca buildings depended on the region, for instance, in the coast they used large rectangular adobe blocks while in the Andes they used local stones. [3] The most common shape in Inca architecture was the rectangular building without any internal walls and roofed with wooden beams and thatch, usually made from ichu. [4]
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.
Fluvial terraces are elongated terraces that flank the sides of floodplains and fluvial valleys all over the world. They consist of a relatively level strip of land, called a "tread", separated from either an adjacent floodplain, other fluvial terraces, or uplands by distinctly steeper strips of land called "risers".
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A marsh terrace is an artificially created berm that is built in a wetland to prevent erosion, reduce wave energy, and improve habitat for wildlife. Marsh terracing is most common throughout the upper Gulf Coast of the United States , where it is used to prevent coastal erosion , with 980 linear km (609 mi) having been built in Texas and ...