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典型血吸虫病疫区河滩地五氯酚污染土壤微生物特征——以松滋老陈镇庙河为例

Keywords: 五氯酚,杨树,微生物,血吸虫病,Biolog

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Abstract:

采用现场采样及室内分析方法,对长期施用五氯酚(PCP)作为钉螺杀灭剂的典型血吸虫病流行疫区河滩地的土壤微生物特征进行了初步调查研究。结果表明,长期大量施用PCP对河滩裸地土壤微生物种群造成了一定程度的伤害,降低了微生物的总体活性;而种植杨树有利于恢复土壤微生物生物量碳,对修复PCP污染土壤有一定的促进作用。Biolog结果显示土壤微生物利用单一碳源能力的大小顺序为杨树林地>对照>河滩裸地,表明有机污染在一定程度上抑制了土壤微生物的生长。主成分分析显示对照、杨树林与河滩裸地的碳源利用能力差异显著,表明PCP污染对微生物的碳源利用造成了显著影响。土壤微生物对不同种类碳源利用计算结果表明,种植杨树导致林地土壤环境条件发生变化,杨树林地土壤微生物对碳源的利用也发生了明显变化。

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