RT Journal Article SR Electronic T1 Soil ecosystem services and intensified cropping systems JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 64A OP 69A DO 10.2489/jswc.72.3.64A VO 72 IS 3 A1 Kenneth R. Olson A1 Mahdi Al-Kaisi A1 Rattan Lal A1 Lois Wright Morton YR 2017 UL http://www.jswconline.org/content/72/3/64A.abstract AB