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

Soil Data Derived from WISE for Use in Global and Regional AEZ Studies (Version 1.0)

Listed author(s):
  • N.H. Batjes
  • G. Fischer
  • V. Stolbovoi
  • F.O. Nachtergaele
  • H.T. van Velthuizen
Registered author(s):

    During discussions at the International Institute for Applied Systems Analysis (IIASA), the need was identified for refinement of the agro-edaphic element in the revision of FAO's \f2Agro-Ecological Zones\f1 AEZ methodology carried out by IIASA and FAO and in the IIASA's \f2Modeling Land Use and Land Cover Change in Europe and Northern Eurasia\f1 (LUC) project. To this avail, the 4350 soil profile descriptions held in ISRIC's World Inventory of Soil Emission Potential (WISE) database were stratified by soil unit, topsoil textural class and depth zone (0-30 cm and 30-100 cm). Upon a screening on analytical methods used and application of an outlier rejection scheme, derived statistics were generated for 30 soil chemical and physical attributes identified as being important for AEZ studies and analyses of global environmental change. Selected results for Acrisols, classified according to the 1974 version of FAO-Unesco Soil Map of the World Legend, are presented as examples in the Appendices. Special attention was paid to the assessment of Total Available Water Capacity (TAWC), an important parameter in calculation of the length of growing period. Data have been compiled for all the considered combinations of soil unit, topsoil textural class, attribute and depth zone, both for the 1974 and 1990 Legend. Simple taxotranfer rules are introduced to fill some of the gaps that remained in the derived data, notably where sufficient measured data were lacking for particular attributes. As a sequel to the current study, the taxotransfer rules should be fine-tuned and the results should be supplemented with data extracted from the FAO's CD-ROM of the \f2Digital Soil Map of the World and Derived Soil Properties\f1. This combined database will be revised by a group of soil experts. The recommended level-of-detail for presenting the various results should also be determined at that stage. This follow-up activity is necessary to arrive at a mutually agreed upon set of derived soil properties for land evaluation and environmental studies at the continental and global level, for subsequent release as a unified product to the global modeling community.

    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:
    Download Restriction: no

    File URL:
    Download Restriction: no

    Paper provided by International Institute for Applied Systems Analysis in its series Working Papers with number ir97025.

    in new window

    Date of creation: May 1997
    Handle: RePEc:wop:iasawp:ir97025
    Contact details of provider: Postal:
    A-2361 Laxenburg

    Phone: +43-2236-807-0
    Fax: +43-2236-71313
    Web page:

    More information through EDIRC

    No references listed on IDEAS
    You can help add them by filling out this form.

    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:wop:iasawp:ir97025. 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: (Thomas Krichel)

    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.