Historical changes in crop distributions of tropical regions are poorly understood and rarely quantified due to the scarcity of historical records. As early as 1796, Francisco José de Caldas recorded… Click to show full abstract
Historical changes in crop distributions of tropical regions are poorly understood and rarely quantified due to the scarcity of historical records. As early as 1796, Francisco José de Caldas recorded crop distribution and drew maps depicting crop regions for eight crops. Using Caldas’ crop regions, we identify changes of crop distribution in relation to latitude and elevation, as well as compare their elevational limits over two centuries.
               
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