离子型稀土矿浸矿场地增值利用技术模式与示范——以脐橙种植为例

Technical model and demonstration of value-added utilization of ionic rare earth ore leaching site - Taking navel orange planting as an example

  • 摘要: 离子型稀土矿是重要的金属矿产资源,在国际市场上具有不可或缺的地位。离子型稀土矿山开采的历史遗留问题导致水土流失和土壤功能退化严重。浸矿场地的生态问题限制了离子型稀土的进一步开采以及赣州市经济发展,这一背景要求尽快探索出一条可持续的离子型稀土矿山浸矿场地生态修复之路。课题以脐橙种植联合微生物修复为技术思路,通过3年的集成研究与示范,浸矿场地植被覆盖度达到95%,增值效益为5 015 800元/(km2·a),形成了集生态功能恢复和土地增值利用为一体的离子型稀土矿废弃地生态修复模式。该模式在实现生态功能恢复的同时,产生的经济效益既可以提高农民收入,又可以为生态修复提供资金保障,实现可持续性的生态修复,为实现赣南地区经济建设目标和环境保护目标提供了技术支撑。

     

    Abstract: Ionic rare earth ore is an important metal mineral resource and plays an indispensable role in the international market. However, the historical problems associated with the mining of ionic rare earth ores have caused severe soil erosion and soil functional degradation. The ecological problems of the leaching field have limited the further exploitation of ionic rare earth mining and the economic development in Ganzhou city. Therefore, it is necessary to explore a sustainable ecological restoration path for ionic rare earth mining leaching field as soon as possible. With navel orange planting and combined microbial restoration as the technical idea, after three years of integrated field research and demonstration, the vegetation coverage of the socking sites reached 95%, and the value-added revenue reached 5 015 800 ¥/(km2·a), forming a soil ecological restoration model of ionic rate earth mine wasteland, which integrated ecological function restoration and land value-added utilization. This model not only achieves ecological function restoration, but also generates economic benefits that can increase farmers' income and provide funding support for ecological restoration, realizing sustainable ecological restoration and providing technical support for achieving the goals of economic development and environmental protection in the Gannan region.

     

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