Abstract:Amounts of anthropogenic intrusions are mixed into the urban green land soil with rapid urbanization,which lead to the alteration of solid-liquid-gas composition and porosity characteristics in soil system,but its effect on the infiltration process of soil is still unclear. The influence of typical anthropogenic intrusions (brick and concrete fragments) on soil infiltration characteristics in urban green land was studied according to the simulation experiments by one-dimensional vertical ponding infiltration in soil column. The results showed that: (1) Anthropogenic intrusions decreased the infiltration rate,cumulative infiltration amount,wetting front depth,and soil volumetric water content in urban green land,and more obvious inhibition on infiltration in green land soil was observed in concrete group than bricks group with the equal anthropogenic intrusions ratio (P<0.1). (2) With the anthropogenic intrusions ratios increasing from 10% to 20% in urban green land,the soil infiltration rate,cumulative infiltration amount,wetting front depth,and soil volumetric water content showed a continuous decreasing or slightly increasing trend,but all were not significant (P>0.1),which indicated that the inhibiting effect of anthropogenic intrusions on the soil infiltration was gradually weakened. (3) With different types and ratios of anthropogenic intrusions,Kostiakov model was mostly fitted to the relationship between cumulative infiltration amount and time. This research will provide scientific basis on the constructive establishment of sponge city in the future.