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山西汾河流域按土属采土样1740个,测定镍、铬、铅、锌、砷、铜、汞、镉八种元素的含量。探讨了垂直分布及各地形部位贡献大小和地域差异。在中高山地、山地、低山丘陵、丘陵阶地、二级阶地和平原盆地六个地形部位中,土壤重金属元素含量均未超过土壤污染起始值。各元素不同地形部位贡献大小为:中高山地汞大、山地铜大、低山丘陵铬大,丘陵阶地铅、镍、铜大,二级阶地汞大、锌小,平原盆地镉、汞大、铜小。故二级阶地和平原盆地应施用铜、锌微肥和防止汞、镉污染。地域差异研究表明:东西两山山地土壤多数元素含量差异不显著,利用较为一致。南北两盆地污染重点在太原盆地。上述研究结果为土壤环境质量评价、土壤污染防治和预测,工矿企业合理布局,农业生产结构调整提供了科学依据。
According to the soil samples from 1740 soil samples in Fen River, Shanxi Province, the contents of eight elements of nickel, chromium, lead, zinc, arsenic, copper, mercury and cadmium were determined. Discussed the vertical distribution and contribution of each terrain site size and geographical differences. The content of heavy metal elements in soil did not exceed the initial value of soil pollution in the middle and high mountainous areas, mountainous areas, hilly areas, hilly terraces, secondary terraces and plain areas. The contributions of different terrain parts of the elements are as follows: the mercury in the middle and high mountains is large, the copper in the mountains is large, the chrome is large in the hilly hills, the lead, nickel and copper are large in the hilly terraces, the mercury is large in the second terrace, Small copper. Therefore, secondary terrace and plain basin should be applied copper and zinc fertilizer and prevent mercury and cadmium pollution. The study of regional difference shows that the content of most elements in mountainous soil is not significant, and the utilization is more consistent. Pollution in the two northern and southern basins in the Taiyuan Basin. The above results provide a scientific basis for the evaluation of soil environmental quality, prevention and prediction of soil pollution, reasonable layout of industrial and mining enterprises and the adjustment of agricultural production structure.