Cobalt content in agricultural soil and its possible driving factors in a certain area

A total of 21 potential driving factors were considered in this study. Among them, P, N, K₂O, OM, and soil pH were determined by laboratory analysis, while land use type, soil type, soil parent material ( SPM), and geologic stratigraphy were obtained from field surveys and related records. Curvature, face width and slope were calculated using Arc GIS Pro. Distances to rivers, towns, railroads, and roads were obtained from the National Geographic Information Catalog service and processed using Arc GIS Pro.

本研究共纳入21项潜在驱动因子。其中，磷（Phosphorus, P）、氮（Nitrogen, N）、氧化钾（Potassium oxide, K₂O）、有机质（Organic Matter, OM）及土壤pH值均通过实验室分析测定；土地利用类型、土壤类型、土壤母质（soil parent material, SPM）与地层均通过野外调查及相关记录获取。曲率、面宽与坡度借助Arc GIS Pro完成计算。至河流、城镇、铁路与道路的距离数据源自国家地理信息目录服务，并通过Arc GIS Pro进行处理。