Impacts of Intensive Agriculture and Crop Rotation on

[Yaman Barlas]

We do have a related research. It is Ali Kerem Saysels doctoral thesis,
completed a few years ago. It deals with the lon-term comprehensive,
eco-environmental evaluation of the Southeastern Turkey Regional development
project (GAP), using sd modeling. The research may help you with your more
"general" question, at a macro level (that Ii quote below). The published main
reference is:

¥ ÔEnvironmental sustainability in an agricultural development project: a
system dynamics approachÕ (with A.K Saysel and O. Yenigun). Journal of
Environmental Management, 64, 2002, 247-260.

You may want to contact Ali Kerem (<ali@ifi.uib.no>) for much more.
best,
Yaman Barlas
From: yaman barlas <ybarlas@boun.edu.tr>
---------------------------------------------------------------------------
Yaman Barlas, Ph.D.
Professor, Industrial Engineering Dept.
Bogazici University,
80815 Bebek, Istanbul, TURKEY
Fax. +90-212-265 1800. Tel. +90-212-358 1540; ext.2073
http://www.ie.boun.edu.tr/~barlas
SESDYN Group: http://www.ie.boun.edu.tr/labs/sesdyn/

["Leslie A. Martin"]

Hello, Could anyone could direct me to models of the impacts of intensive
agricultural production and crop rotation on soil fertility? Im working on
a model of Bolivias soybean production/export chain (taking Porters
cluster approach) and am struggling to represent the progressive soil
degradation in the Santa Cruz area in a way thats neither so general that
the producers here wont buy in (which is what happened when I tried a
one-stock organic matter / "land fertility" W-3 approach) nor so
K-P-N-humidity-pH specific that we get bogged down in all the details.

Any ideas?

thanks,

Leslie
From: "Leslie A. Martin" <lamartin@rcn.com>