卫生填埋场自然植被恢复调查研究

对北京市六里屯卫生填埋场的自然植被恢复进行研究,结果表明,从表层到60cm深度处土壤的理化性质没有发生大的改变,而在60cm以下土壤理化性质发生突跃,有机质含量由11g/kg上升到16g/kg,随着深度的增加土壤污染加剧。对该场的植被调查显示,经过2年的自然恢复,该场共有18科32种植物,以草本植物为主,经过120cm以上最终覆土的覆盖,垃圾场的特殊环境几乎对植被的生长没有影响,可以考虑对该场进行人工的植被恢复。

Vegetation Revegetation of a Sanitary Landfill

The field survey of vegetation revegetation in Liulitun municipal landfill showed that physical and chemical properties of soil did not change at the depth of 0-60 cm,but they changed greatly below 60 cm.Furthermore,organic matter content increased from 11 to 16 g/kg,and soil pollution became worse with the increase of depth.The survey on vegetation also revealed that after two years of vegetation revegetation,plants belonging to 32 species of 18 families were found in the Liulitun municipal landfill,and herbaceous plants were dominative.After being covered by 120 cm deep soil,special circumstances of garbage dump almost did not affect growth of vegetation.Therefore,artificial vegetation can be used to restore the Liulitun municipal landfill.