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运用地统计方法对海涂土壤电导率的空间变异性进行了深入的分析．结果表明，土壤电导率的空间变异可分为系统变异和随机变异两类，系统变异由微地形、土壤管理等外在环境因素决定，因此不同采样区的系统变异存在差异，其中表层土壤的系统变异明显强于深层土壤；而在不同采样区求得的随机变异结构稳定相似并存在套合结构，它们的变程不受采样方向和采样时间的影响．
The geostatistics method was used to analyze the spatial variability of soil electrical conductivity in the tidal flat. The results show that the spatial variability of soil electrical conductivity can be divided into two types: systematic variation and random variation. The systematic variation is determined by the external environmental factors such as microtopography and soil management. Therefore, there are differences in the systematic variations among different sampling areas. The surface soil system The variation was obviously stronger than that of deep soil. However, the random variation structures obtained in different sampling areas were stable and similar and had nested structures. Their ranges were not affected by sampling direction and sampling time.