text: As the air's CO 2 content continues to rise, poplar trees will likely exhibit increases in growth that will shorten the time from planting to harvest and enhance their importance in the agro-forestry market. Also, with greater productivity and biomass production, significantly more carbon will be sequestered within the woody components of poplar trees and the soils in which they grow, helping to slow the rate of rise of the air's CO 2 content. Thus, the use of Populus species in managed tree plantations would appear to be a promising and prudent cultural practice for future foresters.