煤矸石堆对土壤微生物活性的影响研究

The effect of coal gangue pile on soil enzymatic activities

以山东省曲阜市单家村裕隆煤矿煤矸石堆为研究对象,检测分析其周围土壤中重金属含量及三种微生物的活性。结果表明:煤矸石堆是造成周围环境污染的重要因素,煤矸石释放的重金属大部分被土壤所吸附,所检测的3种重金属(Cr6+、Pb与Hg)在土壤中均被检出,其中部分点位的Pb和Hg含量已经超过《土壤环境质量标准》(GB15618—1995)中的二级标准。微生物量与重金属有效态含量的相关回归分析表明,重金属铅(Pb)是细菌数量变化的主要因素,重金属汞(Hg)是影响放线菌和霉菌的主要因素。

Heavy metal concentrations and soil enzymatic activities were measured in soil around the coal gangue pile the Shanjia village Yulong mine,Qufu city,Shandong province.The results show as follows：the piling-up of coal gangue is an important source of environmental pollution,and most heavy metals from coal gangue are absorbed by soil.All of the measured heavy metals（Cr6＋、Pb and Hg）in soil are above detection limits.Moreover,some concentrations of Pb and Hg have exceeded the secondary standard of Standard of Soil Environmental Quality（GB15618—1995）.The analysis of variance between soil enzymatic and heavy metals effections shows that Pb is the major factors to bacteria,and the major factor effects actinomycete and molds is Hg.