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采用传统统计学和地统计学相结合的方法,通过野外实地分层采集土样,分析干旱区典型内陆河玛纳斯河流域农田土壤水盐的空间分布特征及其影响因素,并探讨了土壤水盐在空间分布上所体现的耦合作用关系.结果表明:研究区农田土壤整体上水分含量较低(14.2%~20.9%),盐渍化程度较高(平均全盐量6.00~9.15 g·kg-1),土壤水盐的剖面分布均呈现出“底聚”现象;各层土壤水分均属于中等变异强度,土壤盐分变异强度较大;受结构性因素影响,各土层盐分和含水量均具有较强的空间相关性.各层土壤水盐的水平分布格局无规律,受地形、地貌等因素制约.在人类活动的干扰下,土壤水盐耦合作用的关系更趋复杂,但两者的空间分异呈现出一定程度的同步性.
By means of traditional statistics and geo-statistics, the soil samples collected in the field were stratified to analyze the spatial distribution characteristics of soil water and salt and their influencing factors in the farmland of a typical inland river in the arid region. Soil water and salt in the spatial distribution of the coupling reflected by the coupling.The results showed that: the study area farmland soil as a whole lower moisture content (14.2% ~ 20.9%), a higher degree of salinization (average total salt 6.00 ~ 9.15 g · Kg-1), the distribution of soil water and salinity showed a “bottom poly” phenomenon. Soil water in each layer all belonged to the medium variation intensity and soil salinity variation intensity was greater. Due to the structural factors, And water content had a strong spatial correlation.The level of soil water and salt distribution pattern of each layer was irregular and was constrained by topography, geomorphology and other factors.Under the interference of human activities, the relationship between soil water and salt coupling effect was more complicated, However, the spatial differentiation of the two shows a certain degree of synchronization.