Although all sub-surface samples contain higher mercury than surface samples, the contents of Hg in profilesoil overlying garbages of different maturities show different trends of variation.
不同成熟度垃圾的上覆土壤中汞都具有次表面样品总汞含量高于表面样品的特点，但变化趋势不同。
2
Roots in soilprofile of the mixed stands show a well distribution.
混交林的根系在土壤剖面上，垂直分布趋于均匀。
3
Tillage treatments affect soil water distribution in soilprofile.