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区域的土壤是一个形态和过程相当复杂的自然综合体,成土过程中受到多种因素的影响,使得土壤性质具有高度的空间异质性。以甘州区土壤(0~20 cm)中全氮、有机质为研究对象,运用GIS和地统计相结合的方法研究了土壤中全氮、有机质的空间分布特征,并用经典统计方法分析获取土壤基本属性的特点,并随后用普通克立格插值的方法绘制了土壤全氮、有机质的空间分布图,发现甘州区土壤全氮、有机质含量比较低,存在着明显的空间分异性,表现为从中心向四周逐渐递减的趋势。
The soil in the area is a natural complex with complicated morphology and process. The process of soil formation is influenced by many factors, making the soil highly heterogeneous in space. Taking the total nitrogen and organic matter in the soil (0 ~ 20 cm) in Ganzhou District as the research object, the spatial distribution characteristics of total nitrogen and organic matter in soils were studied by the combination of GIS and geostatistics. The soil samples were obtained by classical statistical methods Then the spatial distribution maps of soil total nitrogen and organic matter were drawn by ordinary Kriging interpolation method. It was found that soil total nitrogen and organic matter content in Ganzhou were relatively low, and there was obvious spatial heterogeneity Center gradually diminishing trend to the surrounding.