VEGETATION RESTORATION AND SUBSTRATE AMENDMENT OF A RECLAIMED LEAD-ZINC MINE TAILINGS POND

JIANG Xu-sheng; LIU Jie; LI Hai-xiang; WU Fu; ZHU Zhen; LI Xiang-min

doi:10.13205/j.hjgc.202112033

Volume 39 Issue 12

Mar. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(12): 220-226

JIANG Xu-sheng, LIU Jie, LI Hai-xiang, WU Fu, ZHU Zhen, LI Xiang-min. VEGETATION RESTORATION AND SUBSTRATE AMENDMENT OF A RECLAIMED LEAD-ZINC MINE TAILINGS POND[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(12): 220-226. doi: 10.13205/j.hjgc.202112033

Citation:

JIANG Xu-sheng, LIU Jie, LI Hai-xiang, WU Fu, ZHU Zhen, LI Xiang-min. VEGETATION RESTORATION AND SUBSTRATE AMENDMENT OF A RECLAIMED LEAD-ZINC MINE TAILINGS POND[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(12): 220-226. doi: 10.13205/j.hjgc.202112033

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VEGETATION RESTORATION AND SUBSTRATE AMENDMENT OF A RECLAIMED LEAD-ZINC MINE TAILINGS POND

doi: 10.13205/j.hjgc.202112033

1. Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China;
2. Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area,MNR, Nanning 530022, China

Received Date: 2020-12-17
Available Online: 2022-03-30
Publish Date: 2022-03-30

Abstract

Abstract

For the purpose of studying the in-situ plant restoration effect of ecological restoration on lead/zinc mine tailings pond, the comprehensive treatment demonstration project of tailing reservoir in Yangshuo lead zinc mine was chosen as the study object, to investigate and analyze the tails physical-chemical properties, heavy metals and enzyme activity in three reclamation years, and vegetation restoration and the growth of new plants were observed on-site for 3 consecutive years(2018—2020). The results showed that the artificially planted Miscanthus sinensis and Pueraria phaseoloides, two tolerant plants in the tailings bank, could stabilize the heavy metals in the tailings. The newly added species of vegetation in the reservoir area increased year by year, mainly Fabaceae and Asteraceae; catalase, urease and the phosphatase activity first increased and then decreased, the invertase activity increased significantly; the fertility and fertilizer retention capacity of tailings were improved and the total nitrogen content of tailings increased from 1.14 g/kg to 2.19 g/kg. The organic carbon content increased from 9.50 g/kg to 21.01 g/kg. This showed that in the ecological restoration of mine wasteland with similar natural conditions, the target plants from Pueraria and Artemisia should be selected; vegetation restoration would accelerate the secondary succession of plant communities in the tailings reservoir area; the artificial vegetation restoration of the lead-zinc mine tailings reservoir could accelerate the evolution of the tailings substrate, promote the restoration of ecosystem and maintain its well-ordered ecological cycle.
- mine tailings pond,
- vegetation restoration,
- substrate amendment,
- physical-chemical properties,
- enzyme activity

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References(32)

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