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通过研究土壤盐渍化主要参数的空间异质性,反映绿洲不同程度盐渍化的空间分布。借助传统统计学、地统计学与野外实测数据相结合的方法,以渭库绿洲为例,分析土壤三个剖面层(0-10cm,10-30cm,30-50cm)盐渍化主要参数(电导率、含水量、含盐量、pH)的空间异质性。对研究区域各层土壤盐渍化的监测采样控制在95%置信水平、15%相对误差的可接受范围。研究表明:土壤盐分表聚强烈,呈现出东南高,西北低的盐渍化空间格局。土壤盐渍化严重威胁绿洲的生态安全,因此了解盐渍化空间分布,有利于土壤盐渍化的快速诊断,对进行合理的水资源灌溉利用,防治和改良土壤盐渍化具有科学指导意义。
By studying the spatial heterogeneity of the main parameters of soil salinization, the spatial distribution of salinization in different degrees of oasis is reflected. With the combination of traditional statistics, geostatistics and field data, taking Weiqu Oasis as an example, the main parameters of salinization (0-10cm, 10-30cm, 30-50cm) Rate, water content, salinity, pH). Monitoring and sampling of soil salinization at all levels in the study area was controlled at 95% confidence level and an acceptable range of 15% relative error. The results show that the soil salinity table is strongly agglomerated, presenting a salinized spatial pattern with high southeast and low northwest. Soil salinization is a serious threat to the ecological security of oasis. Therefore, understanding the spatial distribution of salinization is conducive to the rapid diagnosis of soil salinization, which is of scientific guiding significance for reasonable water resources irrigation and utilization and prevention and improvement of soil salinization.