The continued supply of our Nation's paper and other wood products increasingly depends on wood fiber produced from forests in the Southern United States. Approximately 200 million acres (81 million ha) of forest are within 13 Southern States-roughly south of the Ohio River and from Texas east. Although these States represent only 24 percent of the U.S. land area, 40 percent of the Nation's forests lie within this region. Southern forests are dynamic ecosystems that, under good land stewardship practices, can continue to supply the Nation with many goods and services (SRFRR 1996).
Achtemeier, Gary L. 2001. Simulating nocturnal smoke movement. Fire Management Today, Vol. 61, No. 1, pp. 28-33