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在人类长期活动过程中,城市土壤自然、物理、化学属性遭到破坏,形成了不同于自然土壤和耕作土壤的特殊土壤,具有结构凌乱、紧实大、通透性差、pH值偏高、固体入侵物多、有机质含量低、矿质元素缺乏、生物群落结构单一和污染严重等特点,针对这些特点提出改良措施,以为保护和改良城市土壤提供借鉴。
During the long-term human activities, the natural, physical and chemical properties of urban soils have been destroyed, forming special soils that are different from natural soils and cultivated soils. They have the characteristics of messy structure, tightness, poor permeability, high pH value, Invasion of many things, low organic matter content, lack of mineral elements, single biological community structure and serious pollution and so on. According to these characteristics, some improvement measures are put forward to provide reference for the protection and improvement of urban soil.