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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | Re: GISList: GIS Farmland Assessment |
| Date: |
09/04/2001 11:24:32 AM |
| From: |
Kevin Royal |
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Stann:
It has been awhile, but my farmland real estate appraisal class
back in college was one of my favorite electives for my
Ag Business degree.
To me, this seems to be a somewhat generic GIS
function for locating comparable sales within several
buffered distances of the property being assessed.
The key is having all of these sales in a database with
some Lat/Long attribute attached. This covers
a comparable sales portion of farmland assessment
if you just interactively select all recent sales within
different search distances of the subject property.
The more interesting (to me, anyway) appraisal is of
the potential productivity and soil type analysis so you
can do for income potential analysis. It also helps
you weed out comparable sales for totally different
types of farms that happen to be within a suitable
buffer distance but have very different soil types.
Nobody really wants to count squares with a template
and the soil survey books (this is what I learned to do).
If you have digital soil maps available for your county, then it
is easy to clip to a farm boundary and look at the total
acres of each soil type. This, combined with a good
elevation raster for slope, makes a good place to start
for this type of productivity analysis.
If you don't have digital soil maps, take a look at this
Adobe Acrobat (.PDF) file available from:
http://www.microimages.com/getstart/soil.htm
I use this software every day (been working
here is software support for nearly 7 years). I am
very familar with this soil map vectorization process,
so I would be happy to answer any questions you may
have regarding ways to automate farmland assessment
using the TNTmips package from MicroImages, Inc.
Kevin Royal
tech@microimages.com
----- Original Message -----
From: "stann mann" <gisuser2000@yahoo.com>
To: <gislist@geocomm.com>
Sent: Tuesday, September 04, 2001 10:22 AM
Subject: GISList: GIS Farmland Assessment
> Does anyone have information or examples of using GIS
> to automate farmland assessment for property taxation?
> I would appreciate any leads you can provide.
> Thank you.
> Stann
>
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