The capacity of urban forest patches to infiltrate stormwater is influenced by soil physical properties and soil moisture

摘要: Forest patches in developed landscapes perform ecohydrological functions that can reduce urban stormwater flows. However, forest patch contributions to runoff mitigation are not well understood due a lack of performance data. In this study, we focus on the potential soils infiltrate rainfall by characterizing rates unsaturated hydraulic conductivity (K) 21 Baltimore, Maryland. Soil bulk density, organic matter, soil moisture, percent coarse fragments (≥2 mm), and texture were evaluated at same locations assess drivers K. The K was significantly higher with high sand content related positively fragment material soil. size did impact We estimate 68 historic could be infiltrated measured rates. Continuous monitoring one also showed is dynamic time influenced antecedent moisture conditions. conservatively alone capable infiltrating most rain events low moderate intensities fell within these Baltimore region. Considering ecohydrologic function, protection expansion make substantial mitigation.