TY  - RPRT
TI  - Are soils of Iowa USA currently a carbon sink or source? Simulated changes in SOC stock from 1972 to 2007
AU  - Shuguang Liu
AU  - Z. Tan
AU  - Z. Li
AU  - S. Zhao
AU  - W. Yuan
PY  - 2011
DO  - 10.1016/j.agee.2010.11.017
UR  - https://pubs.usgs.gov/publication/70035779
ID  - 70035779
ER  -