Johann Heinrich von Thünen

{{Infobox economist | name = Johann Heinrich von Thünen | school_tradition = Classical economics | image = Johann Heinrich von Thünen 1840 portrait.png | image_size = | caption = Johann Heinrich von Thünen, age 57 | birth_date = {{Birth date|1783|06|24|df=y}} | birth_place = Canarienhausen in present-day Wangerland, Friesland | death_date = {{Death date and age|1850|09|22|1783|06|24|df=y}} | death_place = Tellow in present-day Rostock | alma_mater = University of Rostock | institution = | field = Economic theory | influences =Albrecht Thaer | contributions = | awards = | signature =  }} thumb|''Untersuchungen über den Einfluß, den die Getreidepreise, der Reichthum des Bodens und die Abgaben auf den Ackerbau ausüben'', 1842 '''Johann Heinrich von Thünen''' (24 June 1783 – 22 September 1850), sometimes spelled '''Thuenen''', was a prominent nineteenth-century economist and a native of Mecklenburg-Strelitz, now in northern Germany.<ref>He "ranks alongside Marx as the greatest German economist of the nineteenth century" (Fernand Braudel).{{Citation needed|date=July 2013}}</ref>

Even though he never held a professorial position, Thünen had substantial influence on economics.<ref name=":0">{{Cite journal |last=Dickinson |first=H. D. |date=1969 |title=Von Thünen's Economics |url=https://www.jstor.org/stable/2229798 |journal=The Economic Journal |volume=79 |issue=316 |pages=894–902 |doi=10.2307/2229798 |jstor=2229798 |issn=0013-0133|url-access=subscription }}</ref> He has been described as one of the founders of agricultural economics and economic geography.<ref name=":0" /><ref name=":1">{{Cite journal |last=Samuelson |first=Paul A. |date=1983 |title=Thünen at Two Hundred |url=https://www.jstor.org/stable/2725147 |journal=Journal of Economic Literature |volume=21 |issue=4 |pages=1468–1488 |jstor=2725147 |issn=0022-0515}}</ref> He made substantial contributions to economic debates on rent, land use, and wages.<ref name=":0" /><ref name=":1" /><ref>{{Cite journal |last=Moore |first=H. L. |date=1895 |title=Von Thünen's Theory of Natural Wages |url=https://www.jstor.org/stable/1883581 |journal=The Quarterly Journal of Economics |volume=9 |issue=3 |pages=291–304 |doi=10.2307/1883581 |jstor=1883581 |issn=0033-5533|url-access=subscription }}</ref><ref>{{Cite journal |last=Moore |first=H. L. |date=1895 |title=Von Thünen's Theory of Natural Wages |url=https://www.jstor.org/stable/1886011 |journal=The Quarterly Journal of Economics |volume=9 |issue=4 |pages=388–408 |doi=10.2307/1886011 |jstor=1886011 |issn=0033-5533|url-access=subscription }}</ref>

==Early life== Johann Heinrich Von Thünen was born on 24 June 1783 on his father's estate, Canarienhausen.<ref name=":2">{{Cite journal |last=Schneider |first=Erich |date=1934 |title=Johann Heinrich Von Thünen |url=https://www.jstor.org/stable/1907947 |journal=Econometrica |volume=2 |issue=1 |pages=1–12 |doi=10.2307/1907947 |jstor=1907947 |issn=0012-9682|url-access=subscription }}</ref> His father was from an old feudal family, and died when Thünen was two.<ref name=":2" /> His mother remarried a merchant and the family moved to Hooksiel.<ref name=":2" />

Thünen expected to take over his father's estate, which led him to study practical farming.<ref name=":2" /> In 1803, he published his first economic ideas.<ref name=":2" />

He was influenced by Albrecht Thaer.<ref name=":2" />

He married in 1806.<ref name=":2" />

==Work== ===Model of agricultural land use=== thumb|300px|Thünen's model: the black dot represents a city; 1 (white) dairy and market gardening; 2 (green) forest for fuel; 3 (yellow) grains and field crops; 4 (red) ranching; the outer, dark green area represents wilderness where agriculture is not profitable Thünen was a Mecklenburg landowner, who in the first volume of his treatise ''The Isolated State'' (1826), developed the first serious treatment of spatial economics and economic geography, connecting it with the theory of rent. The importance lies less in the pattern of land use predicted than in its analytical approach.<ref>{{cite book|author=Johann Heinrich von Thünen|title=Der isolirte Staat in Beziehung auf Landwirtschaft und Nationalökonomie|url=https://books.google.com/books?id=K-M2AQAAMAAJ|year=1826|publisher=Wirtschaft & Finan}}</ref>

Thünen developed the basics of the theory of marginal productivity in a mathematically rigorous way, summarizing it in the formula in which :<math>R = Y(p - c) - YFm \,</math>

where R = land rent; Y = yield per unit of land; c = production expenses per unit of commodity; p = market price per unit of commodity; F = freight rate (per agricultural unit, per mile); m = distance to market.

Thünen's model of agricultural land, created before industrialization, made the following simplifying assumptions: * The city is located centrally within an "Isolated State." * The Isolated State is surrounded by wilderness. * The land is completely flat and has no rivers or mountains. * Soil quality and climate are consistent. * Farmers in the Isolated State transport their own goods to market via oxcart, across land, directly to the central city. There are no roads. * Farmers behave rationally to maximize profits.

The use which a piece of land is put to is a function of the cost of transport to market and the land rent a farmer can afford to pay (determined by yield, which is held constant here).

The model generated four concentric rings of agricultural activity. Dairying and intensive farming lies closest to the city. Since vegetables, fruit, milk and other dairy products must get to market quickly, they would be produced close to the city.

Timber and firewood would be produced for fuel and building materials in the second ring. Wood was a very important fuel for heating and cooking and is very heavy and difficult to transport so it is located close to the city.

The third zone consists of extensive fields crops such as grain. Since grains last longer than dairy products and are much lighter than fuel, reducing transport costs, they can be located further from the city.

Ranching is located in the final ring. Animals can be raised far from the city because they are self-transporting. Animals can walk to the central city for sale or for butchering.

Beyond the fourth ring lies the wilderness, which is too great a distance from the central city for any type of agricultural product.

Thünen's rings proved especially useful to economic history, such as Fernand Braudel's ''Civilization and Capitalism,'' untangling the economic history of Europe and European colonialism before the Industrial Revolution blurred the patterns on the ground.

In economics, '''Thünen rent''' is an economic rent created by spatial variation or location of a resource. It is "that which can be earned ''above'' that which can be earned at the margin of production".

=== Natural wage === In the second volume of his great work ''The Isolated State'', Thunen developed some of the mathematical foundations of marginal productivity theory and wrote about the Natural Wage indicated by the formula {{math|{{radic|''AP''}}}}, in which {{mvar|A}} equals the value of the product of labor and capital, and {{mvar|P}} equals the subsistence of the laborer and their family.<ref>{{cite book|author=Henry Ludwell Moore|author-link=Henry Ludwell Moore|title=Von Thünen's Theory of Natural Wages|url=https://archive.org/details/vonthnenstheor00moor|year=1895|publisher=G. H. Ellis}}</ref> The idea he presented is that a surplus will arise on the earlier units of an investment of either capital or labor, but as time goes on the diminishing return of newer investments will mean that if wages vary with the level of productivity those that are early will receive a greater reward for their labor and capital. But if wage rates were determined using his formula, thus giving labor a share that will vary as a geometric mean: the square root of the joint product of the two factors, {{mvar|A}} and {{mvar|P}}.

This formula was so important to him that it was a dying wish of his that it be placed on his tombstone.

In ''The Isolated State'', he also coined the term ''Grenzkosten'' (marginal cost) which would later be popularized by Alfred Marshall in his ''Principles of Economics''.

==See also== * Ricardian rent * Hotelling rent * Alfred Weber * Bid rent theory

==References== {{Reflist}} *{{cite book|editor=H. Schumacher-Zarchlin|title=Der isolirte Staat in Beziehung auf Landwirtschaft und Nationalökonomie|url=https://books.google.com/books?id=twtAAQAAIAAJ|year=1875|publisher=Wiegant, Hempel & Parey}}

==External links== *{{Cite Americana|wstitle=Thünen, Johann Heinrich von|short=x}} *{{cite web|title=Johann Heinrich von Thünen|url=https://www.hetwebsite.net/het/profiles/thunen.htm|publisher=HET, at the Institute for New Economic Thinking}} * {{PM20|FID=pe/017484}}

{{DEFAULTSORT:Thunen, Johann Heinrich Von}} Category:1783 births Category:1850 deaths Category:People from Friesland (district) Category:German farmers Category:19th-century German landowners Category:German economists Category:Classical economists Category:Economic geographers Category:Regional scientists Category:Regional economists Category:19th-century German geographers Category:University of Rostock alumni