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在兼顾吉林省公主岭地区土壤类型与样点分布的相对均匀性的前提下 ,采集黑土、黑钙土和草甸土等土壤耕层 (0 -2 0cm )样品 70个 ,测定其全砷 (As)、铬 (Cr)和锌 (Zn)含量以及其它主要理化性质。采用经典统计学与半方差函数拟合相结合的方法 ,研究了土壤砷、铬和锌含量的空间变异性。根据半方差函数的拟合结果 ,在ArcViewGIS软件的支持下 ,编制Scripts进行克里格插值 ,以此来揭示该区域土壤砷、铬和锌含量的空间分布规律 ,并探讨这些重金属元素与主要土壤理化性质的关系
Taking the relative homogeneity of soil type and sampling point distribution in Gongzhuling area of Jilin Province into consideration, 70 samples of soil topsoil (0 ~ 20 cm), such as black soil, chernozem and meadow soil, were collected to determine their As ), Chromium (Cr) and zinc (Zn) content as well as other major physicochemical properties. The spatial variability of soil arsenic, chromium and zinc contents was studied by a combination of classical statistics and semi-variance function fitting. According to the fitting result of the semivariance function and the ArcViewGIS software, scripts were compiled for Kriging interpolation to reveal the spatial distribution of arsenic, chromium and zinc in the soil and to explore the relationship between these heavy metals and the main soil The relationship between physical and chemical properties