Fig. 6From: Improving soil organic carbon mapping in farmlands using machine learning models and complex cropping system informationCubist modeling zoning plot and zoning coefficient plot. RW rotation of rice with winter wheat, RF rotation of rice with fallow land, RR rotation of rice with winter rapeseed, DW rotation of dry crops with winter wheat, DF rotation of dry crops with fallow land, DR rotation of dry crops with winter rapeseed, Silt silt content, Clay clay content, MAP mean annual precipitation, MAT mean annual temperature, Dis_IC distance from the nearest irrigated canal, Dis_Pond distance from the nearest pond, Dis_River distance from the nearest river, Dis_RS distance from the nearest rural settlementBack to article page