露天废弃石灰岩矿山生态地质环境评价与分区治理

    Eco-geological environment evaluation and zonal governance of open-pit abandoned limestone mine

    • 摘要: 露天废弃石灰岩矿山引发了一系列生态问题与地质环境问题,构建涵盖其生态修复与评价全流程的框架,具有重要的理论价值与实践价值,为此本研究提出了“整体评价、精准诊断、分区治理”的总体方案。基于生态地质学原理,构建了一套包含生态、地质与灾害环境的矿山生态地质环境评价指标体系,并将其成功应用于济南市马头山露天废弃石灰岩矿山项目。研究中运用组合赋权物元可拓模型,能够客观地评价研究区现状;采用障碍度模型,精准识别出影响研究区环境的关键指标,依次为土壤侵蚀度>植被覆盖率>矿山土地破坏与压占>地形地貌景观破坏>土壤养分综合指数>地质灾害>生物多样性指数,为制定修复措施提供了科学支撑。结合实地地质调查,选取适宜的生态修复模式对矿山区域进行分区治理,充分发挥自然恢复的作用。

       

      Abstract: Open-pit abandoned limestone mines have brought about a series of ecological and geological environmental problems. It is of great theoretical and practical significance to construct a framework covering the entire process of their ecological restoration and evaluation, therefore an overall plan of “comprehensive evaluation, precise diagnosis, and zonal governance” has been proposed. Based on the theory of ecological geology, a set of evaluation index system covering ecological, geological and disaster environments of mine eco-geological environment is constructed and successfully applied to the abandoned open-pit limestone mine project of Matoushan in Jinan City. The combined weighted matter-element extension model in the research can accurately evaluate the current situation of the area studied. The key indicators affecting the area studied environment have been precisely identified by the adopted obstacle degree model: soil erosion degree > vegetation coverage> destruction and occupation of mine land> destruction of topography and geomorphology landscape> comprehensive index of soil nutrients > geological disasters> biodiversity index, a scientific basis has been provided for the formulation of restoration measures. Based on on-site geological surveys, appropriate ecological restoration models should be selected to carry out zonal governance of the mining area, giving full play to the role of natural restoration.

       

    /

    返回文章
    返回