Spatial variation characteristics of soil pH value, organic matter and total nitrogen in Daishan island, Zhoushan, Zhejiang province were studied by statistical and GIS spatial interpolation analysis. The result indicated the main factors of variation. Spatial distribution map of the three indexes were made by Kriging interpolation method. The results demonstrated that the variation coefficient of pH value, organic matter and total nitrogen were 0.11, 0.13 and 0.54, and spatial distribution of them presented strip or patched. The correlation coefficients of organic matter and total nitrogen reached extremely significant (P<0.01), and their spatial distribution was similar. The spatial variation of pH value, organic matter and total nitrogen was mainly affected by the distribution of vegetation, soil types, topography, etc. The major influencing factor of the organic matter was distribution of vegetation.%利用统计分析和GIS空间分析模块初步分析了舟山市岱山本岛土壤pH、有机质含量、全氮含量3个土壤性质指标的空间变异特征,揭示这些指标空间变异的主要影响因素,并利用克立格插值法生成三者含量的空间分布图.结果表明:土壤表层pH、有机质、全氮含量变异系数分别为0.11、0.13和0.54,存在中等程度的变异性,且三者空间分布条带状或斑块状分布明显.土壤有机质和全氮含量相关系数达到极显著水平(P＜0.01),两者空间分布格局具有相似性；研究区土壤表层pH、有机质、全氮空间变异性主要受到植被分布、土壤类型、地形等因素的影响,土壤有机质含量空间变异性受植被因素影响明显.
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