IDEAS home Printed from
MyIDEAS: Log in (now much improved!) to save this paper

Klum: A Simple Model Of Global Agricultural Land Use As A Coupling Tool Of Economy And Vegetation

Listed author(s):
  • Kerstin Ronneberger
  • Uwe A. Schneider
  • Richard S.J. Tol


    (Economic and Social Research Institute, Dublin)

The Kleines Land Use Model (KLUM), is a global agricultural landallocation model, developed as a tool to dynamically couple global state-of-the-art vegetation and economy models. The allocation process is based on profit maximisation, assuming risk aversion and decreasing returns to scales. The model is suited for long-term predictions, acknowledges spatial and biophysical diversity and enables the data exchange with common vegetation models. Finally, the effective simplicity of the mechanism facilitates online-coupling with larger models. Simulations of future crop allocation under climate change suggest that cultivation of cereals would fall in favour of minor crops such as vegetables and fruits. Total revenue of crop production is predicted to increase for most parts of the world. The comparison with two reference scenarios, where solely prices or yields are changed show that the observed results are dominated by the induced price changes. Losses in revenue prevail and changes in area are more balanced over the world when only the much smaller yield changes are applied. Yet, the simple sum of price and yield effects on crop allocation can differ in magnitude and sign from the real dynamics, emphasising the importance of simultaneous inclusion of economic and biophysical aspects of land-use decisions.

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

File URL:
File Function: First version, 2005
Download Restriction: no

Paper provided by Research unit Sustainability and Global Change, Hamburg University in its series Working Papers with number FNU-65.

in new window

Length: 42 pages
Date of creation: May 2005
Date of revision: May 2005
Handle: RePEc:sgc:wpaper:65
Contact details of provider: Postal:
Bundesstrasse 55, 20146 Hamburg

Phone: +49 40 42838 6593
Fax: +49 40 42838 7009
Web page:

More information through EDIRC

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

in new window

  1. Darwin, Roy & Tsigas, Marinos E. & Lewandrowski, Jan & Raneses, Anton, 1995. "World Agriculture and Climate Change: Economic Adaptations," Agricultural Economics Reports 33933, United States Department of Agriculture, Economic Research Service.
  2. Darwin, Roy & Tsigas, Marinos & Lewandrowski, Jan & Raneses, Anton, 1996. "Land use and cover in ecological economics," Ecological Economics, Elsevier, vol. 17(3), pages 157-181, June.
  3. Tongeren, Frank van & Meijl, Hans van & Surry, Yves, 2001. "Global models applied to agricultural and trade policies: a review and assessment," Agricultural Economics of Agricultural Economists, International Association of Agricultural Economists, vol. 26(2), November.
Full references (including those not matched with items on IDEAS)

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

When requesting a correction, please mention this item's handle: RePEc:sgc:wpaper:65. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Uwe Schneider)

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.

This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.