某矿采选项目改扩建对自然保护区的影响分析

Analysis on the Influence of the Mining and Ore Dressing Reconstruction Projects of a Mine to Nature Reserve Area

针对甘肃省陇南市成县某铅锌矿采选项目改扩建对鸡峰山省级自然保护区可能造成的生态影响,从植被及植物多样性、动物多样性和自然景观3个方面进行分析,为矿山的生态环境保护提供依据。预测了矿山改扩建后不同工况下SO_2小时和年均排放浓度,参考现有SO_2对植物的急性和累积伤害阈值成果来进行对保护区植物的影响分析,结果表明,改扩建项目SO_2排放对保护区保护类野生植物叶片的影响较小;从生境破坏和环境污染角度开展对动物多样性的直接、间接影响分析,结果表明,矿山改扩建对保护区保护类野生动物生境不造成直接破坏,对动物多样性的影响较小。矿山改扩建主要在现有工业场地基础上进行,由于现有工矿景观已经形成,不会对保护区自然景观造成新的不利影响。

Aimed at the mining and ore dressing reconstruction projects of a lead-zinc mine in Cheng County of Longnan City in Gansu Province,its ecological influence of Jifeng Mountain provincial nature reserve area is analyzed from the three as-pects of vegetation and plant diversity,animal diversity and natural landscape to provide basis for the the impact analysis of mining activities to nature reserve area. The 1-hour average and the 24-hour average emission concentrations of SO2 are predic-ted under different working conditions,the influence analysis of the reconstruction projects to nature reserve area is done by comparing with the current thresholds of cute and cumulative damage of plants caused by SO2 ,the results show that the influ-ence of the emission of SO2 produced the reconstruction projects of the mine is acceptable to the leaves of the wild plant in the nature reserve area. The direct and indirect influence analysis of the mining and ore dressing reconstruction projects of the mine to animal diversity is done from the aspects of ecological destruction and environmental pollution,the results indicated that the reconstruction projects of the mine would not destruct the ecological environment of the nature reserve area directly,and the in-fluence of the projects to the animal diversity is also acceptable. Since the reconstruction projects of main is conducted in the same place,and the industrial landscape of the mining area is already existed,so,the reconstruction projects can not cause the new bad effect to the landscape of the nature reserve area.