In LGT, the tiptop of TN appears in the topsoil (0. 0 g/kg), 0. 8 g/kg in palaeosol and 0.90 g/kg in loess.
In LGT, the tiptop of TN appears in the topsoil (0. 0 g/kg), 0. 8 g/kg in palaeosol and 0.90 g/kg in loess.
在LGT剖面,古土壤中的全氮含量变化范围在0.～0.0g/kg之间,均值为0. 8g/kg;