基于PSR模型的离子型稀土矿区生态安全评价研究

Study on Ecological Safety Evaluation of Ionic Rare Earth Mining Area Based on PSR Model

生态安全是党的十九大提出建设美丽中国目标的重要保障。结合离子型稀土矿区开采特点和生态环境现状,建立PSR(压力-状态-响应)框架模型的离子型稀土矿区生态安全评价指标体系,并应用熵值法确定指标权重,分析评价2011—2016年赣州某稀土矿区的生态安全状况。评价结果表明,该稀土矿区的生态安全指数整体呈现上升趋势,说明矿区的生态安全状况正逐步好转,但总体上该区域的生态安全状况未达到理想安全状态。

Ecological security is an important guarantee for the goal of building a beautiful China proposed by the 19th National Congress of the Communist Party of China. Based on the mining characteristics and ecological environment status of ionic rare earth mining area, this paper establishes an index system for evaluating ecological safety of ionic rare earth mining area based on PStL （pressure-state-response） fi^amework model, and uses entropy method to determine the index weight, the ecological security of a rare earth mining area in Ganzhou from 2011 to 2016 is analyzed and evaluated. The evaluation results show that, the ecological security index of the rare earth mining area as a whole is on the rise, indicating that the ecological security situation of mining area is gradually improving, but the ecological security situation in this area has not reached the ideal safety state on the whole.