【摘要】 本文对辽河平原各土类、亚类、土属、区域土壤背景值含量范围和区域特征进行了探讨,并列出该区土壤元素间相互关系回归方程和相关矩阵,研究结果表明:(1)该区多数土壤元素含量处于世界土壤元素含量的下限;(2)土壤变异系数多为30—50%;(3)各剖面中元素迁移系数为0.9—1.0;(4)土壤元素背景值分布规律为东南部大于西、北部。更多还原

【Abstract】 Soil background contents of a number of elements of different soil groups, sub-groups and genus on Liaohe River Plain were investigated. It appeared that:1) the background levels for most elements studied were around the lower limits of the world’s averages;2)variation coefficients of the background content values were from 0.3 to 0.5 and 3) the element migration coefficients were between 0.9 and 1.0. It was found that the element background contents in soils of eastern and southern parts of the area were generally higher than that of western and northern areas.更多还原