It means that the property of landfill leachate influences the organic matter content in the vadose zone;furthermore silt would more likely exaggerate the effects more than clay.

• 即渗滤液性质对包气带介质中有机物含量具有方向性的影响作用，而包气带介质亚粘土比细砂更容易放大这种作用效果。