Investigation on Soil Infiltration of Park Green Space in Kunming

Doublecycle infiltrator method was used to quantitatively measure the soil infiltration capacity of main park greenbelt in Kunming. The results indicated that the soil of park greenbelt in Kunming is mainly light clay and clay. The soil infiltration capacity of all the park greenbelts was good. The steady infiltration rate was between 034-141mm·min-1 and the average value was 083mm·min-1. 1h average cumulative infiltration rate was 6309mm under the condition of no rain and no water in continuous 72h. The infiltration capability of arborshrubgrass compound greenbelt was better than arborgrass and shrubgrass greenbelt, and the one of Natural greenbelt park was better than artificial vegetation on backfill. Fitting comparison with the commonly used infiltration model proved that a common empirical infiltration model described the best suited performance on the infiltrating processes in the main greenbelt in Kuming, followed by the Kostiakov model , and Horton model. Fitting result has no obvious difference between the last two models and the common empirical infiltration model. Philip model was not suitable for simulating.