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贡嘎山位于青藏高原和四川盆地的过渡带。我们对这个地区土壤中B、Ni、Cr、Ti、Mn、Co、V、Zn、Cu 9种元素的背景值进行了研究,其结果列于表3和表4中。由这些资料我们得出以下结论: 1.东、西两坡土壤背景值是有差异的,差异的性质和程度因不同元素而异。概括而论,每种元素在西坡的平均值分别高于其东坡平均值,而西坡的背景范围分别窄于东坡的背景范围。 2.土壤类型对各元素背景值的影响是明显的,漂灰土带9种元素的背景值都最低。 3.未发现植被对土壤背景值有确定的直接影响。
Gongga Mountain is located in the transition zone between Qinghai-Tibet Plateau and Sichuan Basin. We have studied the background values of 9 elements of B, Ni, Cr, Ti, Mn, Co, V, Zn and Cu in the soils of this area. The results are shown in Tables 3 and 4. From these data we can draw the following conclusions: 1. There are differences in the background values of the soil between the east and west slopes. The nature and extent of the differences vary with different elements. In summary, the average value of each element on the west slope is higher than the average value of its east slope, while the background range of the west slope is narrower than the background range of the east slope respectively. The influence of soil type on the background value of each element is obvious, and the background value of the nine elements in the bleached limestone zone is the lowest. No vegetation was found to have a direct and definite effect on the soil background.