首页|SCREENING OF THE ROCK-GROWN Aspergillus niger XF-1 STRAIN AND ITS ECOLOGICAL RESTORATION IN ABANDONED MINES
SCREENING OF THE ROCK-GROWN Aspergillus niger XF-1 STRAIN AND ITS ECOLOGICAL RESTORATION IN ABANDONED MINES
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NETL
NSTL
In order to solve the extremely long problem of natural restoration in abandoned mining areas, it is necessary for identification of rock microorganisms and evaluating their ecological restoration effects on abandoned granite mining areas. In this study, an efficient Aspergillus niger (A. niger) XF-1 strain was screened from the weathered granite rock surface. The results showed that the A. niger XF-1 strain could increase the release of Si, P, K and other elements in granite and reduce significantly the pH value of the fermentation broth. Combined with high performance liquid chromatography (HPLC) tests, the results showed that oxalic acid is the main type of organic acids in promoting granite weathering. Besides, the research also shows that XF-1 can promote the growth of rock pioneer plant (Amorpha pseudoacacia). The weathering of granite was indicated that A. niger XF-1 could increase the content of nutrient elements in abandoned mining areas and promote soil formation and plant growth, and it could be used as a good bacterial resource for repairing degraded habitats in abandoned granite mines.
NETL
NSTL
