秦岭东段洛河流域废弃矿山生态修复模式选取方法研究:以三门峡市陕州区及周边为例

    Study on the selection method of the ecological restoration model for abandoned mines in the Luohe River Basin of the eastern section of the Qinling Mountains: a case study of Shanzhou District and its surroundings of Sanmenxia City

    • 摘要: 秦岭东段洛河流域矿区治理是重点生态区山水林田湖草沙一体化保护和修复工程的重要内容之一,是黄河流域高质量发展的重要组成部分。为指导废弃矿山生态修复提供科学易行的选取方法,首先,探究废弃矿山不同生态退化程度对应的生态要素特征及其范围;其次,在明确限制性因子阈值的基础上,基于杯球模型理论构建废弃矿山生态修复模式选取的概念性模型;再次,结合生态保护、安全防护、人民福祉三个维度的发展需求构建废弃矿山生态修复模式选取的概念性模型;最后,以三门峡市陕州区及周边四个典型废弃矿山为例,利用阈值效应和发展需求确定矿山生态修复模式,并根据成效评估实证选取方法的适用性。结果表明:①限制性因子阈值视角下,矿区轻度退化时以自然恢复为主,中度退化选用辅助再生,严重退化考虑生态重建;②阈值效应与发展需求共同视角下,若模式选取重合则优先选用该模式,若没有则优先选用人工干预程度较低的方案;③对三门峡市陕州区及周边矿区实施跟踪检测及成效评估发现,水土流失治理情况明显改善,说明废弃矿山生态修复模式选取方法是适用的。这对推进秦岭东段洛河流域健康生态,重要生态区环境保护与综合治理,以及流域国土空间开发格局的优化具有重要意义。

       

      Abstract: The management of abandoned mines in the Luohe River Basin, located in the eastern section of the Qinling Mountains, is a crucial component of the integrated protection and restoration project for key ecological zones, which includes mountains, water, forests, fields, lakes, grasses and sands, This is vital for the high-quality development of the Yellow River Basin. In order to provide a scientific and user-friendly method for guiding the ecological restoration of abandoned mines, firstly, the ecological characteristics corresponding to different degrees of degradation in these mines. Next, based on the defined thresholds for limiting factors, a conceptual model for selecting restoration methods is constructed based on the theory of cup-and-ball. And then, the needs for ecological protection, safety and people’s welfare across three development dimensions are constructed. Finally, taking four typical abandoned mines in and around Shanzhou District, Sanmenxia, as examples, the appropriate ecological restoration model is determined by using the threshold effect and development needs. The applicability of the method is verified through effectiveness evaluation. The results show that natural restoration is preferred for mild degradation, assisted regeneration for moderate degradation, and ecological reconstruction for severe degradation. When model choices align from both perspectives, the preferred model is selected; if they differ, the program with less artificial intervention is favored. The tracking tests and effectiveness assessments in the mining areas around the Shanzhou District of Sanmenxia City show that significantly improvements in soil erosion control and vegetation coverage. These findings are crucial for promoting a healthy ecology in the Luohe River Basin of the eastern section of the Qinling Mountains, enhancing environmental protection and comprehensive management of key ecological zones, and optimizating the spatial development pattern of land in the basin.

       

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