对黄河三角洲潮间带与潮上带土壤盐分的空间分布特征分析，结果表明：（1）受海水及较低植被盖度的影响，潮间带地区变异性较低，而潮上带地区具有较强的变异性。垂直方向上，各土层的含盐量极值比以及变化幅度均成明显下降趋势。（2）潮上带，地下水埋深越深表层土壤盐分含量越低，而近海岸以柽柳为优势种的潮间带地区，土壤表层盐分较高而其地下水埋深相对较深。（3）不同群落中土壤盐分剖面分属于表聚型、平均型和底聚型，垂直方向上，随着土壤深度的增加，土壤盐分变异系数逐渐变小。（4）柽柳群落、碱蓬群落与芦苇群落的土壤盐分类型均为氯、钠型；朝间带地区土壤氯、钠离子的含量随不同植被的变化规律为芦苇＞柽柳＞碱蓬，反映出碱蓬植物较高的耐碱与吸盐能力。%Analyzed the tide of soil salinity horizontal and vertical distribution characteristics of the typical communities of the Yellow River delta intertidal zone and supratidal zone ,the results show that :(1) Influenced by the seawater and the lower vegetation coverage ,the supratidal zone has strong varia‐bility ,and the variability of the intertidal zone is low .Along with the increase of the depth of soil ,the ratio of the maximum and minimum values and variation tendency of the soil layer of salinity obviously range into decline .(2) The relationship between the tide in groundwater depth of the supratidal zone and the surface soil salinity is that with the deepening of groundwater depth ,surface soil salinity content gradually reduced ,w hile the intertidal area of the dominant species of tamarix near the coast ,it has higher surface soil salinity and relatively deeper the groundwater depth .(3) Soil salinity profile of the region can be divided into three categories :inverted、normal and even ,and influenced by various factors , the soil salinity of the soil vertical layer all have strong variability ,and with the increase of the depth of soil ,the coefficient of variation is becoming smaller .(4) The types of soil salinity tamarix chinensis communities suaeda glauca bunge community and bulrush community are all chloride ,sodium type ,and on condition that the same vegetation types conditions ,the soil salinity content of the intertidal regions is higher than non‐intertidal regions ,and the content law of soil chloride ,sodium ions in the intertidal regions along with the different vegetation is bulrush>tamarix chinensis>suaeda glauca bunge .Reflect that suaeda glauca bunge community has higher salinity tolerance and stronger suction salinity ability .
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