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在GIS背景之下,利用地统计学,结合于田绿洲2014年5月的土壤含盐量采样数据,研究于田绿洲土壤含盐量的空间变异特征。分析结果显示:各深度土壤含盐量的空间分布是不均匀的,主要是以弧状、斑状以及条带状存在,从总的空间分布的格局上来看,有一定的聚集趋势;研究区土壤含盐量主要受到荒漠化程度、植被覆盖度的影响。通过分析于田绿洲土壤含盐量的空间变异性,有利于快速诊断土壤盐渍化,也能够为提升土地的利用效率、保障区域的农田可持续利用提出决策依据。
Under the background of GIS, the spatial variability of soil salinity in Yutian oasis was studied by using geostatistics combined with the sampling data of soil salinity in Tianzhu May 2014. The results show that the spatial distribution of soil salinity in each depth is not uniform, mainly in the form of arcs, spots and bands. From the pattern of the total spatial distribution, there is a tendency of aggregation; the content of soil in the study area The amount of salt is mainly affected by desertification and vegetation coverage. By analyzing the spatial variability of soil salinity in Yutian oasis, it is helpful to quickly diagnose soil salinization and also provide decision-making basis for enhancing the utilization efficiency of land and ensuring the sustainable utilization of farmland in Yutian oasis.