Holznot (German for wood shortage) is a historic term for an existing or imminent supply crisis of wood.
In particular, the concept was applied to Central Europe around the end of the 16th century till the start of the early 19th century in numerous sources. In almost all German-speaking regions, a wood shortage and resulting wood-saving measures became an important topic.   Forestry and history scholars did not dispute the wood shortage per se for a long time. Besides the tragedy of the commons legend, the alleged Holznot was critical to motivate the shift from forest use as part of subsistence agriculture to modern professional forestry and was an important base of the development of modern forestry science around 1800. Around the 1980s, environmental historian Joachim Radkau raising doubts about the alleged 18th-century wood shortage started a research controversy among German historians, called the "Holznotdebatte". Radkau debated e.g. with Rolf Peter Sieferle about the existence, extent, and spatial and social impact of perceived or real existing wood shortages and the associated ideological and economic background. Radkau doubted the Holznot had existed at all. Similar as with the tragedy of the commons he saw a strong ideological motive to get rid of the traditional farmers' forest access.
Radkau repeats Werner Sombart’s notion of the pre-industrial phase as a “Wooden Age”, where wood constituted the key substance for fuel energy, construction and machinery. While Sombart was positive about the change to an "iron age", Radkau is critical about the alleged decline of “wooden civilisation”. Before the industrial century, the “wood brake”, as he names it, was a component of stability, of the ecology and the traditional economic and social order. In connection with the first medieval mining rushes regional wood shortages gave rise to the first use of sustainability in German forestry.
However the situation began to change in the 16th century, as meeting point of the capitalist expansion and the formation of the absolutist state. From the 16th century, world maritime trade, housing construction in Europe and the mountain mining industry brought a sharp rise in timber consumption. The absolutist state asked for a new order of the use of forests and area property rights at the expense of livestock grazing and traditional forest use, as in Resin extraction. Complaints about wood shortages served according Radkau to legitimate state intervention and to exclude of traditional groups of users, as resin workers and wood pasture in favour of more profitable timber consumers.
Sometimes the term peak wood as the point in time when the maximum rate of wood harvesting is reached is being used. The term 'peak' refers to the Hubbert peak of a resource. Thus peak wood and peak oil cannot be compared directly. Unlike resources such as petroleum, which are destroyed in use, wood continually grows and recycled, but it requires habitat (forests, woodland and timber plantations).
In the 2011 book Life Without Oil by Steve Hallett, the author argues that the collapse of the Roman Empire may have been linked to a peak wood scenario in the Mediterranean basin. He suggests that, as wood had to be hauled from ever further away, the law of diminishing returns undermined the economic performance of Roman industry, leaving Rome vulnerable to the other, well documented problems of invasion and internal division. The issue is discussed as cautionary tale comparing it to contemporary society's potential fate under a post-peak oil scenario. Its relevance for ancient and current times is however disputed strongly.
- Wood: A History. By Joachim Radkau, translated by Patrick Camiller (Cambridge, UK: Polity Press, 2012. viii plus 399 pp.)
- Swiss Bafu research Project «Holznot» (18th/19th century)
- Rolf-Jürgen Gleitsmann: Rohstoffmangel und Lösungsstrategien: Das Problem der vorindustriellen Holzknappheit, in: Technologie und Politik 16 (1980), S. 104-154.
- Joachim Radkau: Technik in Deutschland. Vom 18. Jahrhundert bis heute. Frankfurt / New York 2008, ISBN 978-3-593-38689-8.
- Joachim Radkau: Holzverknappung und Krisenbewußtsein im 18. Jahrhundert, in: Geschichte und Gesellschaft 9 (1983), S. 513-543.
- Joachim Radkau, Technik in Deutschland. Vom 18. Jahrhundert bis heute. Frankfurt/New York 2008, p. 74.
- review of Joachim Radkau Wood: A History Cambridge: Polity Press, 2012. 399 pp. by Vaso Seirinidou University of Athens
- Elisabeth Weinberger: Waldnutzung und Waldgewerbe in Altbayern im 18. und beginnenden 19. Jahrhundert. Franz Steiner Verlag, Stuttgart 2001, ISBN 3-515-07610-7. (Sozial- und Wirtschaftsgeschichte: Beihefte Band 157)
- Frank Uekötter, Umweltgeschichte im 19. und 20. Jahrhundert. Enzyklopädie deutscher Geschichte, Bd. 81, (hg. v. Lothar Gall), München 2007, S. 8.
- "Peak Wood: The Importance of Being a Forest". Santa Barbara Independent. April 2010. Retrieved 16 April 2010.
- John Perlin (June 2010). "Peak Wood: Nature Does Impose Limits". Miller-McCune. Retrieved 1 June 2010.
- "Peak Wood". The Anthropik Network. October 2005. Retrieved 21 October 2005.
- Hallett, Steve (2011). Life Without Oil: Why We Must Shift to a New Energy Future. Prometheus Books. Retrieved 24 July 2012.