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采用地理信息系统(GIS)与地统计学相结合的方法,对浙江省森林表层土壤(0~10 cm)有效磷、速效钾、碱解氮、有机碳和pH值的空间变异性进行研究。结果表明:全省表层土壤基本化学性质和有机碳数据通过对数转换基本符合正态分布;在空间分布研究上,有效磷符合高斯模型,碱解氮符合球状模型,有机碳、速效钾、pH值符合指数模型;在全省表层土壤基本化学性质和有机碳的克里格插值结果中,有机碳与碱解氮的空间分布图高值分布区在空间地理位置上较相似,集中分布在海拔较高的淳安、丽水地区,有效磷、速效钾、pH值空间分布图高低值区域差异较大,有机碳与碱解氮呈极显著正相关性(P<0.01)。
The spatial variability of available phosphorus, available potassium, available nitrogen, organic carbon and pH values in the topsoil (0 ~ 10 cm) of forest in Zhejiang Province was studied by the combination of GIS and geostatistics. The results showed that the basic chemical properties and organic carbon data of the topsoil in the province basically corresponded to the normal distribution by logarithmic transformation. In the spatial distribution study, the available phosphorous was Gaussian model, and the content of available nitrogen was consistent with spherical model, organic carbon, available potassium, pH The values of which are in line with the exponential model. In the basic chemical properties of the surface soil and the Kriging interpolation results of organic carbon in the province, the spatial distribution of organic carbon and nitrogen in the high value distribution are similar in space and geography, concentrated in the altitude There were significant differences between the high and low value areas of the spatial distribution of pH, available phosphorus and available potassium in Chun’an and Lishui areas. There was a significant positive correlation between organic carbon and nitrogen (P <0.01).