Effects of optical and radar satellite observations within Google Earth Engine on soil organic carbon prediction models in Spain - Tao Zhou; Yajun Geng; Wenhao Lv; Shancai Xiao; Peiyu Zhang; Xiangrui Xu; Jie Chen; Zhen Wu; Jianjun Pan; Bingcheng Si; Angela Lausch (Journal of Environmental Management, 2023)