Novel soil health assessment framework for legume-based rotation farmland by interpretable machine learning with causal inference. - Xuebin Xu; Qiong Liu; Yalin Liu; Yongfu Li; Yixuan Chen; Tong Lei; Yakov Kuzyakov; Wenju Zhang; Jianping Chen; Tida Ge (Comput. Electron. Agric., 2025)