In recent years the Midwestern United States has seen a significant level of reforestation. What makes this case stand out is there has been a net increase in forest cover despite a significant increase in population. While much of the reforestation is occurring on former agricultural land a portion of the reforestation is taking place on formerly mined lands.
Afforestation / Reforestation
The massive afforestation effort being conducted along the eastern margin of the Gobi Desert is known as the Green Wall of China. This is the largest afforestation program ever undertaken. The Chinese government is executing it in order to limit the effects of dryland degradation and thereby stop the expansion of the Gobi Desert into arable lands and urban areas (BBC News 2001; Gelkin 2009).