Summary
Expansion of biofuel cropping systems requires better spatial resolution of life cycle greenhouse gas (GHG) emissions and mitigation potentials. Simulation modeling was carried out to understand the impact of agro-ecological zone (AEZ), and nitrogen (N) use efficiency (NUE) for inland Pacific Northwest canola and Midwestern soybean biodiesel GHG mitigation potential. Vensim® PLE systems dynamics modeling software was used to determine the impact of the three variables in question (cropping system, agro-ecological zone, and nitrogen use efficiency) (Figure 1). The two cropping systems were Midwestern soybeans and inland Pacific Northwest canola. Soybean production area was presumed to be static, whereas canola production area was projected to increase over time. Three AEZs in the inland Pac
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