Researchers at Michigan State University are growing soybeans and corn on old industrial brownfield sites with a twofold benefit: Growing crops for biofuel production, and cleaning up the soil in the process. Sounds like a winner to me. The city of Trenton alone (the revitalization of which is an interest of mine) could benefit from this immensely along the Route 1/Northeast Corridor railroad line where abandoned factories and contaminated lands abounds. I don't think it could help the pines since soybeans wouldn't grow there anyway, but god knows NJ has enough brownfields to go around...
http://newsroom.msu.edu/site/indexer/2820/content.htm
http://newsroom.msu.edu/site/indexer/2820/content.htm