Johann Heinrich von Thünen (von Thunen). Thünen's model of agricultural distribution around a city in concentric circles. The dot represents a city. The white area around it (1) represents dairy and market gardening; 2) (green) the forest for fuel; 3) (yellow) field crops and grains; 4) (red) Ranching and livestock ;and the outer (dark green) region represents the wilderness where agriculture is not practiced.
Made by uploader and released into the public domain. After the description on the Wikipedia article on von Thunen and Human Geography: Culture, Society, and Space by H.J. de Blij and B. Murphy (7th edition, 2003).
Johann Heinrich von Thünen (von Thunen). Thünen's model of agricultural distribution around a city in concentric circles. The dot represents a city. The white area around it (1) represents dairy and market gardening; 2) (green) the forest for fuel; 3)