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首页> 外文期刊>Agricultural Systems >Grazing as a post-mining land use: a conceptual model of the risk factors.
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Grazing as a post-mining land use: a conceptual model of the risk factors.

机译：作为采矿后土地使用的放牧：风险因素的概念模型。

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Driven principally by government regulation and societal expectations, mining companies around the world are seeking to mitigate the environmental impacts of mining through mined land rehabilitation programs. The ultimate goal of rehabilitation is to establish an acceptable and sustainable post-mining land use. Mining companies worldwide face the challenge of specifying just what a sustainable post-mining land use will be. The problem is that while regulations require mining companies to assess post-mining land use sustainability, the mechanism for doing so and the factors that should be considered are not specified. We propose a risk-based approach to post-mining land use assessment with the aim of reducing the uncertainty of mine closure and the potential cost of repair of land degradation caused by inappropriate post-mining land use. Grazing is a commonly suggested post-mining land use, particularly in Australia where most mining activities occur on land previously used for cattle grazing. Grazing is also seen as a use suited to rehabilitated mined land because of the lower land productivity required compared to cropping. In this paper we develop a conceptual model of the factors influencing the land degradation risk posed by grazing on rehabilitated mined land. This was done through a literature review to identify potentially important risk factors, followed by a survey of graziers surrounding six open cut mines within the Bowen Basin Region of Queensland, Australia. The survey results were used to develop a profile of the risk factors likely to influence the land management behaviour of graziers within the Bowen Basin. The results of the research highlight that there are three main sets of factors that affect grazing risk on rehabilitated mined land. These are site biophysical characteristics that influence land productivity and commercial grazing viability, factors that influence the land management style of a grazier (principally stocking rate decisions), and factors that influence the commitment of a grazier to comply with any caveats placed on the management of the land. The profile of risk factors obtained for Bowen Basin graziers showed that grazing is likely to be a low risk post-mining land use where land productivity is high enough to support commercial cattle grazing and where land is managed by local graziers. Both the conceptual model and the profile of risk factors described in this paper are precursors to the development of a predictive risk assessment model.Digital Object Identifier http://dx.doi.org/10.1016/j.agsy.2012.03.002
机译：主要在政府法规和社会期望的推动下，世界各地的矿业公司都在寻求通过矿山复垦计划减轻采矿对环境的影响。复原的最终目标是建立可接受的和可持续的采矿后土地利用方式。全球各地的矿业公司都面临着挑战，即要确定可持续的采矿后土地用途。问题在于，尽管法规要求矿业公司评估采矿后土地使用的可持续性，但并未规定这样做的机制和应考虑的因素。我们提出了一种基于风险的采矿后土地利用评估方法，目的是减少关闭矿山的不确定性以及不适当的采矿后土地利用造成的土地退化修复的潜在成本。通常建议在放牧后的土地上放牧，特别是在澳大利亚，大多数采矿活动发生在以前用于放牧牛的土地上。放牧还被认为是适合于恢复耕地的一种用途，因为与种植相比，其所需的土地生产力较低。在本文中，我们开发了一个概念模型，该模型影响了放牧后的耕地上造成的土地退化风险的因素。这是通过文献综述来确定潜在的重要风险因素，然后对澳大利亚昆士兰州博文盆地地区内六个露天矿的掠食者进行的调查。调查结果用于确定可能影响博文盆地内放牧者的土地管理行为的风险因素。研究结果突出表明，有三大因素影响恢复后的雷区的放牧风险。这些是影响土地生产力和商业放牧生存能力的场所生物物理特征，影响放牧者土地管理风格的因素（主要是放养率决定），以及影响放牧者遵守管理上的任何警告的承诺的因素。那片土地。从博文盆地吃草者获得的风险因素概况来看，放牧可能是采矿后土地使用的低风险地区，土地生产力足以支持商业性放牧，土地由当地吃草者管理。本文描述的概念模型和风险因素概况都是预测性风险评估模型发展的先驱。数字对象标识符http://dx.doi.org/10.1016/j.agsy.2012.03.002

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