上海市临港新片区绿化土壤质量评价

Evaluation on Greening Soil Quality in Lingang New Area of Shanghai

摘要:

土壤是城市发挥绿地功能的载体，与城市宜居性、环境质量和人类的生活质量密切相关。以上海市临港新片区某大型社区为例，对绿化种植土壤和绿化用表土的主控指标（pH、含盐量、EC值、有机质、质地、入渗率和发芽指数）进行了调查分析，评价了土壤质量状况。分析结果表明，绿化种植土壤和绿化用表土含盐量大多满足要求，样品超标率低于4%；质地以壤质砂土和砂质壤土为主，无样品超标。pH、有机质、EC值超标率较高，尤其是EC值超标率高达88%。两种土壤盐碱化严重，EC值和有机质整体偏低，均需进行土壤改良。

Abstract:

Soil is the carrier of urban green space function, and is closely related to the urban livability, environmental quality and human life quality. Taking a large community of Lingang New Area in Shanghai as an example, the main control indicators (pH, salinity, EC value, organic matter, texture, infiltration rate and germination index) of greening planting soil and greening topsoil are investigated and analyzed to evaluate the soil quality status. The analysis results show that the salt contents of greening planting soil and greening topsoil mostly meet the requirements, and the sample exceeding the standard rate is less than 4%. The texture is mainly loamy sandy soil and sandy loam soil, and no samples exceed the standard. The rates of pH, organic matter and EC value exceeding the standard are higher, and especially the rate of EC exceeding the standard is as high as 88%. The two soils are seriously salinized, and the EC values and organic matter are generally lower. The soil improvement is all required.