上海临港重装备区土壤盐分特征分析

为了解上海临港重装备区土壤的背景值，为土地合理利用提供科学依据，通过室外调查与室内测定相结合的方法。分析了不同空间分布和垂直分布下的临港重装备区的盐分分布特征。结果表明：该区土壤78.63％为非盐化土壤.10.26％为轻度盐化土壤，3.42％为中度盐化土壤，4.27％为重度盐化土壤，3.42％为盐土；越靠近东海，土壤盐分含量越高，其中阴离子以CI^-和HCO3^-为主，阳离子以Na^＋为主；土壤中主要阴阳离子的剖面分布规律相似，即表层含量较高，随土层深度增加而降低，但CO^2-3和CO^-3的分布规律则相反。近海阴离子以CI^-为主，离海越远土壤为苏打性盐渍化，即表层土壤阴离子主要以HCO3^-离子为主。底层土壤阴离子以CI^-和SO^2-4为主。除盐分外，pH碱性强和有机质含量低是I临港重装备区环境的主要制约因子。

Analysis of the Soil Salinity in Shanghai Lingang Heavy-Facility Area

In order to understand the soil background of Lingang heavy-facility area of Shanghai and provide a scientific basis for the rational utilization of land,through the method of outdoor and indoor investigation to analysis the soil salinity of the spatial and verti-cal distribution of Lingang heavy-facility area.The results indicates that 78.63%,10.26%,3.42%,4.27% and 3.42% soil is non,slight-ly,moderately,strongly and salinized respectively.The salinity content of the soil is in a reverse proportion to the d...