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Using native plants to evaluate the effect of arbuscular mycorrhizal fungi on revegetation of iron tailings in grasslands |
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| Authors: | Wei Guo Renxin Zhao Huijuan Yang Ji Zhao Jun Zhang |
| Affiliation: | 1. College of Environmental and Resource Science, Inner Mongolia University, 235 West University Blvd, Hohhot, 010021, Inner Mongolia Autonomous Region, People’s Republic of China 2. College of Life Science, Inner Mongolia University, Hohhot, 010021, Inner Mongolia Autonomous Region, People’s Republic of China 3. College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, Inner Mongolia Autonomous Region, People’s Republic of China |
| Abstract: | A pot experiment was conducted to evaluate native plant species associated with exogenous AMF for their suitability in the revegetation of iron mine tailings of Inner Mongolia grassland. Agropyron cristatum (L.) Gaertn. and Elymus dahuricus Turcz. associated with AMF, Glomus mosseae, or Glomus versiforme, were grown on iron mine tailings to assess the mycorrhizal effects on plant growth, mineral nutrition uptake, C:N:P stoichiometry, and heavy metals uptake. The symbiotic associations were successfully established between exogenous AMF and two native plants, and root colonization rates of G. versiforme were significantly (P?G. mosseae. G. versiforme was more effective than G. mosseae in promoting plant growth by significantly (P?A. cristatum and E. dahuricus were increased by 51–103 %. The N, P, and K concentrations of shoots and roots of two plants were increased by 18–236 %. Inoculation with AMF also significantly (P?G. versiforme was more suitable than inoculation with G. mosseae for the revegetation of iron mine tailings. The experiment provided evidence for the potential use of local plant species in combination with exogenous AMF for ecological restoration of metalliferous tailings in arid and semi-arid grassland. |
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