山东滨海低平原区盐渍土盐分的时空变异研究

Spatio-temporal Variability of Saline Soil Salinity in Shandong Low-lying Coastal Plain

文章运用地统计学的方法对山东滨海盐渍土年际空间变异和分布特征差异进行分析研究,结果表明:黄河三角洲表层土壤的盐渍化程度较高且在年际变化上呈积盐趋势,莱州湾南岸则呈脱盐趋势但盐渍化面积增加;山东滨海低平原区盐渍土受结构因素的影响加剧;表层土壤盐分的分布规律与地形有密切关系,盐渍化类型与盐渍化程度的分布特征基本吻合;莱州湾南岸应注意防止土壤碱化。由此提出因地制宜综合开发、减少土壤盐分输入、加强盐分淋洗、改善土体性质和防止土地碱化等建议,对滨海地区后备土地水土资源的开发利用具有指导作用。

Statistical methods was adopted to analysis the spatio-temporal variation and spatial distribution difference of Shandong coastal saline soil in this paper.The results showed that the salinization degree of the Yellow River Delta is high and there is a trend of salt deposition on the inter-annual variability.The southern Laizhou Bay showed a trend of desalination while the salinization area is increasing.The influence of the structure factors of saline soil in the low-lying plain of Shandong province is aggravated and the top layer soil salinity distribution has a close relationship with topography,the salinization type is basically in accordance with the distribution characteristics of salinization degree.What＇s more,attention should be paid to prevent soil alkalization in the southern Laizhou bay.Suggestions were proposed according to these results,such as the comprehensive exploitation,measures adjustment to local conditions to reduce soil salt input,salt-leaching strengthening,soil properties improvement and soil alkaline prevention,which are of important guiding significance for the development and utilization of water and soil resources in coastal region.