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A Study on the Reclamation and Ecological Restoration in Subsidence Land in Chinese Coal Mine Area



Hui Yue1, *, Ying Liu2
College of Geomatics, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, China


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© 2015 Yue and Liu

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Abstract

Arbuscular mycorrhizal fungi (AMF) technology of bioremediation becomes one of the most hotspots in the research on coal-mining subsidence land. This article based on amorpha fruiticosa planting in the mining subsidence of Shendong mining area as a study object, arbuscular mycorrhizal fungi was vaccinated on amorpha fruiticosa after different monitor time, respectively measures are used to analyze its effect on the growth of plant and on rhizosphere soil physical properties. The correlation between hyphae density and Olsen-P of rhizosphere is analyzed. By using regression analysis, we found that in different monitoring time, hyphae density and effective phosphorus in September had better linear fitting than that in June, which is closely associated with development time of mycorrhizal. With the time passing by, the correlation of vaccination between hyphae density and effective phosphorus content is gradually decreased; however, the positive correlation of un-vaccinated is gradually emerged. The results of mycorrhizal bioremediation on mining subsidence in Shendong mining area prove that vaccination not only could effectively promote growth and development of amorpha fruiticosa in macroscopic, but also could improve the growth matrix conditions in microscopic.

Keywords: Arbuscular mycorrhizal fungi, coal-mining subsidence land, reclamation and ecological restoration.



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