What occupies each ring of the von thünen model and why?

Diary products, Timber and Firewood, Crops and Livestock occupies each ring of Von Thunen model to maintain the land cost and transportation cost.

Explanation:

The city is located in an "Isolated state" which is surrounded by the unoccupied wilderness.It is self sufficient and there will be no external disturbances.Diary products which is close to the city will get to the market easily because in 19th century,people did not have any oxcarts to travel larger distances. Secondly Timber and Firewood which is used as fuel for heating and cooking.Thirdly Crops which is the main source of food grains which can be last longer than diary products.The last zone is the Livestock where the animals can walk to any places for sale and butchering.