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兼顾土壤类型和相对均匀性的前提下,在黑龙江省海伦县中部地区采集黑土土壤样品60个(0-20cm),在GIS的支持下,采用经典统计学与地统计学相结合的方法研究了土壤铜、铬、铅、镉、汞、砷含量的空间变异性及分异规律。结果表明,就空间相关域而言,铜含量的空间变异性比铬要大;铅、镉、汞、砷含量存在很好的空间结构性,趋势项可用一次趋势面方程分离,一次趋势面方程代表了这四种元素的宏观分布趋势;铜、铬、铅含量的空间分异表现为起伏变化较大,岛状区域分布较多;铅、镉、汞含量以靠近海伦县县城处相对较高,砷含量不同空间位置上变化相对比较平缓。
Taking into account the soil type and relative homogeneity, 60 soil samples (0-20cm) of black soil were collected in the central Helen County, Heilongjiang Province. Using the method of classical statistics and geo-statistics, Spatial Variability and Differentiation of Copper, Chromium, Lead, Cadmium, Mercury and Arsenic in Soil. The results show that the spatial variability of copper content is larger than that of chromium in spatially relevant domains. The content of lead, cadmium, mercury and arsenic have good spatial structure, and the trend items can be separated by one time trend surface equation. The trend surface equation Representing the macroscopic distribution trend of these four elements. The spatial distribution of copper, chromium and lead showed a larger fluctuation and island-shaped distribution, while the contents of lead, cadmium and mercury were relatively higher near Helen county , The change of arsenic content in different spatial positions is relatively gentle.