低、中强度火烧对土壤容重和孔隙度的影响不是很人，而对土壤分散系数却有影响。
Low and moderate intensity fire had no or little effects on soil unit weight and porosity, which was different from that on separate coefficient.
降雨能使火烧迹地的土壤密度和分散系数升高、孔隙度下降。
Rainfall makes the soil density and disperse coefficient increased and porosity decreased.
采用室内试验方法研究了分散红3b及其代谢产物对土壤过氧化氢酶活性的影响。
Influence of disperse red 3b and its metabolites on catalase activity of soil was investigated.
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