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中文摘要：
莱州湾南岸地区受海水入侵影响盐渍化问题严重，土壤盐渍化是制约区域农业生产和发展的主要障碍因子。运用经典统计学和地统计学的方法，研究了莱州湾南岸地区土壤剖面盐分离子的空间分异规律。结果表明：土壤全盐含量随深度的增加而增加，表现出底聚趋势；各层土壤盐分离子均表现中等和强烈的变异性；土壤盐分主要以NaCl和Na2SO4的形式存在；偏相关分析说明不同盐分离子间的相关性差异较大；聚类分析表明盐分离子主要分为三大类：K＋、Mg2 、Ca2 和SO42-为第一类，Na 单独组成第二类，Cl-则为第三类；除全盐含量在30～60cm具有中等空间自相关外，其他各层土壤盐分属性均具有强烈的空间自相关性；盐渍化类型以硫酸盐型、氯化物—硫酸盐型和硫酸盐—氯化物型为主，盐渍化程度以轻度盐渍化为主。
英文摘要：
The south coastal area of the Laizhou Bay is seriously subjected to soil salinization as a result of seawater intrusion. Soil salinization has become a major factor that hinders the regional agricultural production and development. In order to explore rules of the spatial distribution of salt ions and dominant salt ions in soil profiles in the research area, 14 sampling sections were arranged at 6km intervals in this study, containing 76 soil profiles. Soil samples were collected from the 0~30cm, 30~60cm and 60~90cm soil layers, separately, of each profile. A portion （about 1/3） of each sample was taken out from the same soil profile and blended into a mix for analysis. Classical statistical and geo-statistical methods were used in combination to analyze statistical characteristics and spatial distribution of salt ions in the soil profiles in the area. Cluster analyses of the soil ions were also done. Results show that within the 0~1m soil layer, soil salts displayed an obvious trend of accumulating in the bottom; The dominant soil salt ions in the research area were Na＋、SO42- and Cl-, existing in the form of NaCl and Na2SO4. These findings may serve as reference for the future researches on monitoring and assessment of soil salinization in this area. The analyses of the three ions in the soil has fully explained the problem of soil salinization in the south coastal area of the Laizhou Bay. Partial correlation analysis of the salt ions in the soil shows that the ions varied sharply . Cluster analysis indicates that the salt ions in the soil consisted mainly of three categories of salt ions： Category I： K , Mg2 , Ca2 and SO42-; Category II： Na , and Category III： Cl-. The total salt content displayed a moderate spatial autocorrelation in the 30~60cm soil layer, and strong ones in the other two layers, which suggests that the spatial variation of the soil salt properties was mainly affected by natural factors. Spatial distribution of the salt ions in the soil appeared in pattern of strips and patche
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