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以裂缝未经过的油蒿为对照,利用统计分析方法系统研究了神东矿区补连塔煤矿有裂缝经过的油蒿根际微生物数量和酶活性的动态演变特征,以了解煤炭开采引起的地表裂缝对油蒿根际生物活性的影响,为采煤沉陷区的生态修复提供理论依据。结果表明,地表裂缝出现后,油蒿根际细菌、放线菌的数量减少,真菌的数量增加,酶的活性提高,土壤含水量和电导率下降,地表裂缝对油蒿根际的生物活性造成明显的干扰破坏。经过一年多的时间,随着地表裂缝的逐渐闭合,油蒿根际土壤含水量恢复正常,电导率、蔗糖酶活性和磷酸酶活性受地表裂缝的影响逐渐减弱,而微生物数量受地表裂缝的影响未见明显好转。可见,油蒿根际的生物活性具有一定的自修复能力,但进程比较缓慢。
Using Artemisia ordosica without cracks as control, the dynamic evolution characteristics of rhizosphere microbial population and enzyme activity in Artemisia ordosica mined at BuLianta coal mine in Shendong mining area were systematically studied by statistical analysis method to understand the surface cracks caused by coal mining On the rhizospheric biological activity of Artemisia ordosica, provide a theoretical basis for the ecological restoration of subsidence area. The results showed that the number of rhizobacteria, actinomycetes and fungi increased after the appearance of surface cracks, the activity of enzyme increased, the soil water content and conductivity decreased, and the surface cracks caused the biological activity of A. ordosica rhizosphere Obvious interference damage. After more than one year, with the gradual closure of the surface cracks, the rhizospheric soil moisture of A. ordosica returned to normal, the conductivity, invertase activity and phosphatase activity gradually decreased under the influence of surface cracks, while the number of microbes was affected by surface cracks No significant improvement in impact. Can be seen that the biological activity of Artemisia ordosica Rhizosphere has a certain self-healing ability, but the process is relatively slow.