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广西木圭锰矿历经数十年露天开采,生态环境遭到严重破坏。通过对复垦区的桉树林、水稻田、花生地、木薯地的土壤进行营养状况和重金属含量的检测分析,总结了前阶段取得的复垦效果,探讨了复垦区的重金属污染情况及生态恢复途径。结果表明,复垦区土壤为强酸性土壤,土壤肥力较低,土壤中镉的含量为2.30~4.46 mg·kg-1,超过了土壤环境质量三级标准的2~4倍。针对该矿区的环境现状,提出了生态恢复治理对策和建议。
After decades of open-pit mining in Guangxi Mugui manganese mine, the ecological environment has been seriously damaged. Through the analysis and analysis of the nutritional status and heavy metal contents of eucalyptus forest, paddy field, peanut land and cassava land in reclaimed area, the reclamation results obtained in the previous stage are summarized, and the heavy metal pollution and ecological environment in reclamation area are discussed Way to recover. The results showed that the reclaimed soil was strongly acidic soil with low soil fertility. The content of cadmium in soils was 2.30-4.46 mg · kg-1, which exceeded 2 ~ 4 times of the third grade of soil environmental quality. Aiming at the current situation of the environment in the mining area, the countermeasures and suggestions for ecological restoration and management are put forward.