A case study from Panzhihua city, primary studies about urban environmental geochemistry of trace elements in the soil were carried out.
以攀枝花市为例，初步研究了该市土壤中微量元素分布的地球化学特征及城市环境污染特征。
About environmental geological problems of harmful elements in coal primarily involved pollutions of atmosphere, soil and water resources by combustion of coal.
煤中有害元素的环境地质问题，主要是燃煤对大气、土壤、水域的污染。
Consequently, the soil activity of dehydrogenase can be taken as a sensitive index for assessing environmental effect of rare earth elements.
土壤脱氢酶活性是评价稀土元素环境效应的敏感指标。
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