----- Forwarded Message -----
From: "Chieko Maene" <[log in to unmask]>
To: [log in to unmask]
Sent: Tuesday, June 9, 2009 7:32:22 PM GMT -06:00 US/Canada Central
Subject: Re: Maps of Wheat Cultivation in Tanzania
Don't know if you came across these but,
http://www.fao.org/landandwater/agll/agromaps/interactive/page.jspx
FAO Agro-MAPS offers area summary/aggregated crop data at admin 1 level
by crop type, including wheat, between 1991 and 2001 (plus unknown "most
recent" year) for Tanzania. If you need spatial & boundary data to match
with the data table, you can perhaps get that from either (1) FAO -
Africover, or (2) USGS Africa Data Dissemination Service, Digital Map
Data, or (3) GADM (http://www.maplibrary.org/stacks/gadm/index.php)
To find more specific wheat cultivated area, I guess s/he can use
Landsat (though 2003-present images have a sensor problem, i.e. SLC-off
effects) and then perform classification analysis - kind of like
creating USDA/NASS CDL (cropland data layer) dataset, which I've never
done. AWiFS (http://earth.esa.int/object/index.cfm?fobjectid=1659) is
another data source mentioned in various cropland analysis papers - but
it doesn't look like the data is freely available. Too bad -
Chieko
Maps-L Moderator wrote:
> -------- Original Message --------
> Subject: Maps of Wheat Cultivation in Tanzania
> Date: Tue, 9 Jun 2009 13:00:17 -0700 (PDT)
> From: Kathy Stroud <[log in to unmask]>
> To: Air Photo Maps-L <[log in to unmask]>
>
>
>
> Hello all,
>
> I'm finding this one tricky. I'm looking for current maps or GIS/remote
> sensing data that shows where wheat is being cultivated in Tanzania. The
> information needs to be relatively current because agricultural patterns
> have apparently changed in recent years.
>
> Any leads would be helpful.
>
> Thanks,
>
> Kathy Stroud, Map/GIS Librarian
> Biological/Agricultural Sciences and Map Services, Shields Library
> 100 NW Quad Ave.
> Davis, CA 95616-5292
> 530-752-5248
--
Chieko Maene, MS, MLIS
Maps & State Documents Librarian
Government and Geographic Information and Data Services
University Library
Northwestern University
1970 Campus Drive
Evanston, IL 60208-2300
Phone: (847) 467-3679
Fax: (847) 491-7603
[log in to unmask]
http://www.library.northwestern.edu/map/
http://geospatial.edublogs.org/
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