矿山修复模式对刺槐根际土壤微生物群落结构和功能的影响[j]。

Q2 Environmental Science
Feng Yan, Xin Zhao, Yu-Pu Zhao, Xing-Yu Wang, Yu-Tong Zhang, Yue-Bing Liang, Ya-Xuan Wen, Ya-Heng Chen
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引用次数: 0

摘要

为探讨冀北矿区土壤基质(客土、铁尾砂、排土场混合土)对三种矿山修复模式下植物根际微生物多样性和功能的影响,采用土壤养分测定技术和高通量测序技术,探讨根际土壤环境、微生物群落结构和耦合机制。结果表明:①3种土壤基质中细菌和真菌的种类和分布相似。共有细菌2 402种,优势菌群为变形菌门。共有真菌1 059种,优势真菌群落为子囊菌门。其中,客土与排土场土壤相似性最高,共有细菌102种,真菌180种。②不同修复模式对土壤基质环境因子的影响显著。客人土的pH、SOM和TN含量显著高于其他类型土壤。土壤酶活性和土壤养分的联合作用对细菌群落的影响最大,土壤养分的单一作用对真菌群落的影响最大。③不同基质下细菌和真菌群落的结构和功能存在显著差异。在属水平上,细菌和真菌群落结构与pH和TK显著相关(P<0.01),真菌结构与SUC显著相关(P<0.05)。尾矿砂的细菌功能与排土场相似,以化学异养和氧化异养为主。三组真菌的功能相似,不同营养类型的主要功能不同。研究结论对矿区后续生态修复工作的有效可持续发展具有重要的理论意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
[Effects of Mine Remediation Mode on Microbial Community Structure and Function in the Rhizosphere Soil of Robinia pseudoacacia].

To explore the effects of soil substrates (guest soil, iron tailings sand, and dump mixed soil) on plant rhizosphere microbial diversity and function of three mine restoration modes in the northern Hebei mining area of China, the soil environment, microbial community structure, and coupling mechanism of rhizosphere soil were explored by soil nutrient determination technology and high-throughput sequencing technology. The results showed that: ① The species and distribution of bacteria and fungi in the three soil substrates were similar. There were 2 402 species of bacteria, and the dominant bacterial community was Proteobacteria. There were 1 059 species of fungi, and the dominant fungal community was Ascomycota. Among them, the similarity between the guest soil and the dump soil was the highest, with a total of 102 species of bacteria and 180 species of fungi. ② Soil substrate environmental factors in different remediation modes had significant effects. The contents of pH, SOM, and TN in guest soil were significantly higher than those of other types of soil. The combined effect of soil enzyme activity and soil nutrients had the greatest impact on the bacterial community, while the single effect of soil nutrients had the greatest impact on the fungal community. ③ There were significant differences in the structure and function of bacterial and fungal communities in different substrates. At the genus level, the bacterial and fungal community structure was significantly correlated with pH and TK (P<0.01), and the fungal structure was significantly correlated with SUC (P<0.05). The bacterial function of tailings sand was similar to that of the dump, which was mainly chemoheterotrophic and oxidative heterotrophic. The functions of fungi in the three groups were similar, and the main functions of different trophic types differed. The conclusions of this study have theoretical importance for the effective and sustainable development of the subsequent ecological restoration work in the mining area.

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来源期刊
环境科学
环境科学 Environmental Science-Environmental Science (all)
CiteScore
4.40
自引率
0.00%
发文量
15329
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