TY  - RPRT
TI  - Agricultural conversion without external water and nutrient inputs reduces terrestrial vegetation productivity
AU  - W. Kolby Smith
AU  - Cory C. Cleveland
AU  - Sasha C. Reed
AU  - Steven W. Running
PY  - 2014
DO  - 10.1002/2013gl058857
UR  - https://pubs.usgs.gov/publication/70108020
ID  - 70108020
ER  -