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Evaluation of the comprehensive benefits of vegetation restoration of rare-earth tails in Xunwu County

机译：荀武县稀土尾植被恢复综合效益评价

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Rare earth elements (REE) are important mineral resource in China, especially in Jiangxi province, Inner Mongolia. There is abundance of tailings in the REE mining area, which is harmful for the ecosystem and environment. Eucalyptus is one kind of tree which has often been used in the in ecological restoration for the tailings field of the REE mining area in Jiangxi province. Taking REE mining area of Xunwu County in the south of Jiangxi province as a study region, the comprehensive benefits of ecosystem restoration in tailings field with eucalyptus was examined this paper for evaluating the achievements and defects of ecosystem restoration. Xunwu County is not only one of the most important REE mining areas in China, but also the first county in the head streams of Dongjiang river, one of three branches in Pearl river basin. This river's inflow is the water source for the domestic and industrial needs of Hong Kong, Shenzhen, Guangzhou and other cities. After detailed surveys and evaluations of experts, 26 main indexes were determined for appraising the comprehensive impacts of vegetation restoration with eucalyptus on the ecological environment in tailings field of the REE mining area in Xunwu County. Then the model for evaluating comprehensive benefits of vegetation restoration with eucalyptus was put forward for with the analytic hierarchy process (AHP) method and fuzzy mathematics theory. Finally, according to the different assessments by several experts (two persons), local officials (four persons), scientists (three persons), farmers (eight persons) and entrepreneurs in REE industry (three persons), who were randomly selected, the comprehensive benefit of eucalyptus in tailings fields of the REE mining area was evaluated with the above model. It was generally shown in this research that during the ecosystem restoration with eucalyptus in tailings field of REE minerals, the ecological benefits and economic benefits were both general. The social benefits were good, and the comprehensive benefits were general. On the other hand, the overview assessment showed that, generally speaking, the comprehensive benefits of eucalyptus were thought as excellent, good, general, poor and bad by 17%, 28%, 30%, 21% and 4% of above surveyed in research, respectively. It was suggested in this article that the eucalyptus was useful for ecological restoration in the tailings field of REE minerals in Xunwu County, Jiangxi province. The social benefits of ecosystem restoration with eucalyptus in tailings field were good, which is higher than the ecological benefits and economic benefits. So there was something to be done to improve the ecological and economic benefits of ecological restoration with eucalyptus in the tailings field of REE minerals. The reasons behind the lacking of ecological and economic benefits in ecological restoration with eucalyptus were lacking of biodiversity, and a shortage of soil water in the tailings field of REE minerals. There should be some research and other things to deal with above problems.
机译：稀土元素（REE）是中国重要的矿产资源，特别是在内蒙古江西省。 REE矿区有丰富的尾矿，对生态系统和环境有害。桉树是一种树，通常用于江西省雷矿区尾矿领域的生态恢复。在江西省南部的徐武县雷矿区作为一项学习区，研究了与桉树尾矿领域生态系统恢复的综合效益，审查了本文，以评估生态系统恢复的成就和缺陷。徐武县不仅是中国最重要的雷伊矿区之一，而且也是东江的头部溪流的第一个县，是珠江流域的三个分支之一。该河流流入是香港，深圳，广州等城市的国内和工业需求的水源。经过详细的调查和专家评估，确定了26个主要指标，以评估植被恢复与桉树南部山区尾矿县尾矿领域生态环境的综合影响。然后，用分析层次处理（AHP）方法和模糊数学理论向桉树评估植被恢复综合效益的模型。最后，根据几位专家（两个人），当地官员（四人），科学家（三人），农民（八人）和企业家在Ree Industry（三人）的不同评估，被随机选择，全面用上述模型评估了尾矿场中桉树的益处。它通常在本研究中显示，在尾矿矿物尾矿领域的生态系统修复过程中，生态效益和经济效益都是一般的。社会福利很好，综合福利是一般的。另一方面，概述评估表明，一般而言，桉树的综合益处被认为是优秀，良好，一般，贫困和差的17％，28％，30％，21％和4％的调查分别研究。本文建议，桉树在江西省迅武县雷矿山尾矿领域的生态恢复有用。尾矿田间桉树生态系统修复的社会益处良好，良好，高于生态效益和经济效益。因此，有一些东西可以在Ree矿物质尾矿领域提高生态修复的生态和经济效益。缺乏生态恢复生态和经济效益的原因缺乏生物多样性，尾矿矿物矿物领域的土壤水域短缺。应该有一些研究和其他事情来处理上述问题。

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