A bivariate choropleth map is another type of choropleth map that portrays two separate phenomena or processes simultaneously on the same map by combining two different sets of graphic symbols or colors to distinguish between the two variables under study. The above map is a bivariate choropleth map because it portrays two separate variables, the number of orchards and the land area, simultaneously together on the same map using both colors for land area and tree symbols to distinguish them apart from each other.
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