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【目的】为奇台县的防风治沙工程和沙漠植被建设提供参考。【方法】利用改造后的沙丘地和6种土地类型的实地测量数据,通过变异函数、Moran’s I系数、土壤水分等值线图探讨了改造后的沙丘地春季表层土壤水分的水平空间变异性及其原因。【结果】经种植梭梭改造后的沙丘地的土壤含水量呈现出3个明显与沙丘土壤水分不同的特点。(1)均值大于沙丘,土壤含水量接近于草地;(2)土壤水分半方差函数模型已表现为与沙丘水分的球状模型完全不同的指数模型,且变程小于样点间距,相关性显著;(3)土壤含水量等值线图等值线密集,并呈与梭梭林带走向一致的条带状分布。【结论】奇台县自2000年以来实行的防沙治沙已取得较大的成效。
【Objective】 To provide references for windbreak and sand control project and desert vegetation construction in Qitai County. 【Method】 The spatial variability of surface soil moisture of the reformed sand dune in spring was studied by field data of the modified sand dune and six types of land by using the variogram, Moran’s I coefficient and contour map of soil water content. The reason. 【Result】 The results showed that soil moisture content of dune ground after the planted Haloxylon ammodendron was improved showed three distinct characteristics of soil moisture content of dune. (1) The mean value of soil water content is more than that of dune and the soil water content is close to that of grassland. (2) The semi-variance function model of soil moisture has been shown to be completely different from the spherical model of dune water. (3) Contour map of soil water content is intensive and has a strip-shaped distribution consistent with Haloxylon ammodendron. 【Conclusion】 The prevention and control of desertification in Qitai County has achieved great success since 2000.