Farm woods of the central hardwood region vary widely as to size and as to proportion of total farm area. On good Corn Belt land the woodland area within a county rarely averages more than 10 or 12 acres per 120-acre farm, but south of the glacial boundary the average rises in some counties to 30 or 40 acres per 80-acre farm. In many Corn Belt counties gross woodland area amounts to less than 5 percent; in many hill counties, it exceeds 50 percent. To focus this discussion, I have roughly estimated the average woods area on farms in different parts of the region as follows:
Hall, J. Alfred
"Objectives in Farm Woods Management in the Central Hardwood Region,"
Ames Forester: Vol. 29
, Article 4.
Available at: https://lib.dr.iastate.edu/amesforester/vol29/iss1/4