黑龙江省肇源县土壤汞的空间分异研究

研究土壤汞的空间分异，可以探明影响汞分布的因素，从而有助于解决汞污染等重大生态环境问题。以肇源县的表层和深层土壤为研究对象，利用统计指标、GS⁺软件中的半方差函数模型和ArcGIS软件支持下的克里格插值法，对258个深层土壤样品和1 030个表层土壤样品进行分析，探讨了研究区重金属汞的积累特征。结果表明:样本点之间具有一定的空间相关性。表层土壤汞分布较深层更为不均匀，表层差异更大主要是受人为因素影响，与灌溉、施肥、工农业活动密切相关。深层土壤汞分布状况主要受自然因素影响。

Study on Spatial Variability of Soil Mercury of Zhaoyuan County in Heilongjiang Province

A study on spatial variability of soil mercury helps to solve mercury pollution and other major ecological and environmental problems. Taking surface and deep soil of Zhaoyuan County as the research object, 258 deep soil samples and 1 030 surface soil samples were analyzed and accumulation, characteristics of element mercury in the research area were discussed by using the statistical index, semi-variogram function model of GS+software and Kriging interpolation of ArcGIS software. The results showed that there was a certain spatial correlation between samples taken from different points. element mercury distribution of the overall soil can be fully reflected, by Kriging interpolation. Element mercury of surface soil distributes more uneven, which was mainly affected by man-made factors, closely associated with irrigation, fertilizers, industrial and agricultural activities. Distribution of elemental mercury in the deep soil was mainly affected by the natural factors.