Effects of geographical and soil factors on soilś arsenic levels: a case study in typical arsenic-contaminated paddy fields based on machine learning - Renjie Zhang; Liheng Jiang; Tianhao Dong; Yunhe Xie; Shufang Pan; Saihua Liu; Rui Huang; Xionghui Ji; Tao Xue (Environmental Management, 2025)