Of artificial pollution, it only impacted on the soil layers at surface and resulted in its high manganese, while the deep soil layers are similar to those without contamination.

人为污染主要影响土壤表层，以表层土壤中高锰为特征，其深层土壤中锰与无污染状态相似。

youdao

Of artificial pollution, it only impacted on the soil layers at surface and resulted in its high manganese, while the deep soil layers are similar to those without contamination.

人为污染主要影响土壤表层，以表层土壤中高锰为特征，其深层土壤中锰与无污染状态相似。

youdao