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Abstract
Atriplex includes species with multiple purposes such as biomass for energy production, for bioremediation of soils contaminated with metals, or soil conservation. In Chile, 29 Atriplex species have been recorded, of which 21 are native. However, there are limited studies on these species. Agro-climatic zonation allows for determining the land aptitude Atriplex species cultivation according to the climatic conditions where their growth has been documented. The objective of this study was to establish the agro-climatic regions suitable for growing Atriplex in northern Chile by carrying out agro-climatic zonation. Our results revealed that an area of 4.89 million hectares is suitable for Atriplex growth, of which the Atacama region comprises the most (42.9%). Meanwhile, the best conditions for Atriplex growth, i.e. where it is adapted without thermal and hydric restriction, were registered in Arica and Parinacota and Coquimbo regions (7135 hectares).