For a modest SD approach to hydric erosion, water quality, and
cropland productivity, you might want to check out the relevant
components of AgLand: The Game
(http://www.apec.umn.edu/faculty/sjtaff/agland/)
We calibrated the system using plausible values for Midwest US
soils and terrain, although we had to make one significant change
for game-playing purposes: we made soil productivity _much_ more
susceptible to erosion than it is in The Real World. In this area, at
least, the A horizon is deep, and erosion at normal levels wont really
bite into production for scores of years at a minimum. We wanted to
add a little tension to gameplay, so we made the effects occur
starting after a decade or so.
Steven J. Taff
Department of Applied Economics
University of Minnesota
sjtaff@umn.edu
http://www.apec.umn.edu/faculty/sjtaff
Impacts of wind erosion and water eros
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