Xie Linlin, Bi Yinli, Li Xianglei, Wang Kun, Christie Peter
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing, China.
Institute of Ecological and Environmental Restoration in Mining Areas of West China, Xi'an University of Science and Technology, Xi'an, China.
Front Microbiol. 2021 Sep 17;12:718727. doi: 10.3389/fmicb.2021.718727. eCollection 2021.
Coal mining results in reduced soil quality and makes environments less stable. Soil fungi are suitable indicators of soil quality for monitoring purposes. Here, the objective was therefore to investigate the effects of grazing and mining on the composition of the soil fungal community at the periphery of an opencast coal-mine dump in the Shengli mining area, Xilingol League, Inner Mongolia. A total of 2,110 fungal operational taxonomic units were identified and subdivided into 81 orders and nine categories, based on trophic modes. The sensitive factor to mining was soil pH, and that to grazing were soil nitrate-nitrogen and alkaline phosphatase activity. According to the Pearson correlation and Mantel test, we propose interactions between grazing and coal-mining exist a co-effect and could regulate edaphic variables to alter the behavior of soil fungal community. Moreover, compared with coal-mining, grazing has a greater impact on it. The results provide a basis to further clarify soil fungal ecological functions, and may also contribute to the practice of soil remediation and environmental management in coal-mining areas.
煤炭开采导致土壤质量下降，使环境变得更不稳定。土壤真菌是用于监测目的的土壤质量的合适指标。因此，本研究的目的是调查放牧和采矿对内蒙古锡林郭勒盟胜利矿区露天煤矿排土场周边土壤真菌群落组成的影响。基于营养模式，共鉴定出2110个真菌操作分类单元，并细分为81个目和9个类别。对采矿敏感的因素是土壤pH值，对放牧敏感的因素是土壤硝态氮和碱性磷酸酶活性。根据Pearson相关性和Mantel检验，我们认为放牧和煤炭开采之间存在相互作用，具有共同效应，并且可以调节土壤变量以改变土壤真菌群落的行为。此外，与煤炭开采相比，放牧对其影响更大。研究结果为进一步阐明土壤真菌的生态功能提供了依据，也可能有助于煤矿区土壤修复和环境管理实践。
