吐鲁番盆地处于我国西部的极端干旱区,土壤盐渍化严重,影响当地工农业生产与生态环境保护。为研究盆地的土壤盐渍化现状及其驱动因素,文章在采集783个易溶盐样品分析理化结果的基础上,借助Excel、Spss软件对盐渍土的分布及类型、盐分特征、总碱度与盐离子含量的关系、盐离子的相关性进行了分析。分析表明:(1)土壤盐渍化类型主要是亚硫酸型和氯型盐渍土,未出现碱土类型;(2)土壤的pH平均值为7.32,属弱碱性;(3)土壤的总碱度与重碳酸根离子线性相关显著;(4)表层土壤盐分中K+与Mg2+显著正相关,Na+与Cl-达极显著正相关,Mg2+与SO2-4、CO2-3显著正相关。上述分析结果表明,盆地内盐渍化主要受干旱的气候以及地下水运移的影响,研究结果对土壤盐渍化防治、水资源管理、农业生产、生态环境保护具有一定的指导意义。
Turpan Basin is a extreme drought area in the western China. Serious soil salinization affects the local industrial and agricultural production and ecological environment protection. Based on the analysis of physical and chemical properties of 783 soluble salt samples,the salt ions content relationship of total alkalinity and salt ions, salt ions were analyzed. The results show that:( 1) Soil salinization type is mainly the sulfurous acid and chlorine saline soil,alkaline type does not appear.( 2) Soil pH average value is 7. 32,belongs to weakly alkaline.( 3) Total alkalinity of soil is associated with bicarbonate ions significant linear.( 4) In the surface K+and Mg2 +show significantly positive correlation,Na+and Cl-get up to extremely significant positive correlation,Mg2 +and SO24, CO2-3 show significant positive correlation. The results of the analysis indecate the salinization of basin mainly by dry climate and the influence of the groundwater migration,which has a certain guiding significance on soil salinization prevention,water resources management,agricultural production,ecological environment protection.