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利用地统计学方法研究了额济纳绿洲土壤有机质、全氮、全磷、全钾的空间异质性。结果表明:土壤养分含量分布均有较大的空间异质性,土壤有机质的理论模型为指数模型,全氮、全磷和全钾的理论模型均为球状模型;额济纳绿洲土壤有机质、全氮、全钾主要受结构性因子的影响,全磷受结构性因子和随机因子的共同影响;全氮、全磷和全钾的变程在7.68～7.86km,土壤有机质的变程较小,为5.4km。土壤养分的空间分布表现为南北高,中间低的分布格局。
The geostatistics method was used to study the spatial heterogeneity of soil organic matter, total nitrogen, total phosphorus and total potassium in Ejina Oasis. The results showed that: the distribution of soil nutrient content has a large spatial heterogeneity, the theoretical model of soil organic matter is an exponential model, the theoretical model of total nitrogen, total phosphorus and total potassium are spherical model; Ejina Oasis soil organic matter, total nitrogen, Total potassium was mainly affected by structural factors. Total phosphorus was affected by both structural factors and random factors. The range of total nitrogen, total phosphorus and total potassium was 7.68 ~ 7.86km, and the variation of soil organic matter was 5.4 km. Spatial distribution of soil nutrients showed high distribution in the north and south and low in the middle.