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该文研究了上海市不同功能区公共绿地土壤的渗透性,并分析了草地和种植灌木土壤渗透性的差异及其主要影响因素,结果表明:上海市绿地土壤的渗透性差异较大,一般来说,草地土壤渗透系数小于灌木土壤的渗透系数,主要是因为草地压实现象普遍,土壤容重增大,孔隙度下降,而灌木区受到踩踏的程度低、根系能增加土壤的通透性,因而渗透性能较好。通过实验室土壤渗透性改良试验,确定了通过添加改良基质使土壤达到国外生物滞蓄系统渗透速率要求的具体方法,为构建符合上海地方特色的生物滞蓄系统的种植/渗滤层提出了建议。
The paper studied the permeability of public green soils in different functional areas in Shanghai and analyzed the differences of soil permeability and the main influencing factors of grassland and shrubs. The results showed that the permeability of green soils in Shanghai varied greatly, Said that the soil infiltration coefficient of grassland was less than the permeability coefficient of shrub soil mainly due to the widespread grassland compaction, increased soil bulk density and decreased porosity, while the shrubs were less stampeded and the root system increased soil permeability and thus Permeability is better. Through the laboratory soil permeability improvement test, the specific methods for the soil to reach the requirement of foreign bio-slump system through adding the modified matrix were determined, and the suggestions for constructing the planting / infiltrating layer of the bioacid system conforming to Shanghai’s local characteristics were put forward .