College of Foresty, The University of Shenyang Agriculture, Dongling Road, Shenyang, China.
State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China.
Environ Sci Pollut Res Int. 2022 Dec;29(56):84396-84409. doi: 10.1007/s11356-022-21690-0. Epub 2022 Jul 2.
Vegetation restoration is an effective method to improve the ecological environment of mine tailings, which has a profound impact on the potential ecological functions of soil fungal communities; yet, little is known about its beneficial effect on soil ectomycorrhizal fungal community. In this study, the responses of soil characteristics and soil ectomycorrhizal fungal community diversity and structure to different revegetation, as well as the contribution of soil factors to soil ectomycorrhizal community were investigated in Liaoning Province, China. As we anticipated, the presence of vegetation significantly improved most soil properties we studied. What's more, compared to Korean pine (Pinus koraiensis Sieb. et Zucc.), Chinese poplar (Populus simonii Carr), and black locust (Robinia pseudoacacia L) could better improve soil total carbon, total nitrogen, total phosphorus, and available phosphorus. In addition, soil ectomycorrhizal fungal community diversity in black locust was greater than Korean pine and Populus simonii. Nonmetric multidimensional scaling analyses indicated that soil ectomycorrhizal community significantly differed depending on different revegetation types. Thus, these results indicated that black locust could be a suitable species for the revegetation of iron mine tailings. The study provided theoretical basis for ecological restoration of iron mine tailings using local plant species.
植被恢复是改善矿山尾矿生态环境的有效方法，它对土壤真菌群落的潜在生态功能有着深远的影响；然而，对于植被恢复对土壤外生菌根真菌群落的有益影响却知之甚少。本研究以中国辽宁省为例，调查了不同植被恢复方式对土壤特性及土壤外生菌根真菌群落多样性和结构的响应，以及土壤因子对土壤外生菌根群落的贡献。正如我们所预期的那样，植被的存在显著改善了我们所研究的大多数土壤性质。更重要的是，与红松（Pinus koraiensis Sieb. et Zucc.）、山杨（Populus simonii Carr）和刺槐（Robinia pseudoacacia L.）相比，刺槐能更好地提高土壤总碳、总氮、总磷和有效磷。此外，刺槐的土壤外生菌根真菌群落多样性大于红松和山杨。非度量多维尺度分析表明，土壤外生菌根群落因不同的植被恢复类型而有显著差异。因此，这些结果表明刺槐可以作为铁矿尾矿植被恢复的适宜物种。该研究为利用本地植物物种进行铁矿尾矿的生态恢复提供了理论依据。
