Abstract Pavements, rooftops and compacted soils inhibit rainfall infiltration across our cities and drains built to prevent flooding can further reduce water availability to urban ecosystems. These hydrological changes diminish the provision of ecosystem service benefits to local populations and negatively impact downstream communities and environments. Stormwater engineering can help restore infiltration, but little use has been made of infiltration systems in expansive clay soil (often referred to as reactive clay), due to the potential for problematic shrinking and swelling soil movements in response to changes in soil moisture. In an experiment in South Australia, ground movement and moisture variation were monitored in moderately reactive clay soil beneath pervious and impervious paving, revealing that soil moisture and ground movement were influenced by interactions between pavement treatment, the design of the pervious pavement’s gravel base layer, the size and proximity of trees, and the season. Where there were no tree influences, water-related ground movement was smaller near impervious paving, but ground movement was smaller near pervious paving at sites near trees. The differences in ground movement between pervious and impervious pavements were small when compared with the amplitude of ground movement observed at pervious and impervious pavement treatments between summer and winter.

中文翻译：

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中等膨胀土壤中的地面运动，通过透水铺路受到降雨渗透

摘要 人行道、屋顶和压实的土壤会抑制雨水渗入我们的城市，而为防止洪水而建造的排水沟会进一步减少城市生态系统的可用水量。这些水文变化减少了为当地人口提供的生态系统服务效益，并对下游社区和环境产生负面影响。雨水工程可以帮助恢复渗透，但在膨胀粘土（通常称为反应性粘土）中几乎没有使用渗透系统，因为响应土壤水分变化的土壤收缩和膨胀运动可能会出现问题。在南澳大利亚的一项实验中，在透水和不透水路面下的中等反应性粘土中监测了地面运动和水分变化，揭示土壤湿度和地面运动受路面处理、透水路面砾石基层设计、树木的大小和距离以及季节之间的相互作用的影响。在没有树木影响的地方，不透水铺面附近与水相关的地面运动较小，但在靠近树木的地点，透水铺面附近地面运动较小。与夏季和冬季之间在透水和不透水路面处理中观察到的地面运动幅度相比，透水和不透水路面之间的地面运动差异很小。与水有关的地面运动在不透水铺面附近较小，但在靠近树木的地点的透水铺面附近地面运动较小。与夏季和冬季之间在透水和不透水路面处理中观察到的地面运动幅度相比，透水和不透水路面之间的地面运动差异很小。与水相关的地面运动在不透水铺装附近较小，但在靠近树木的地点的透水铺装附近地面运动较小。与夏季和冬季之间在透水和不透水路面处理中观察到的地面运动幅度相比，透水和不透水路面之间的地面运动差异很小。